{"id":100300,"date":"2026-02-15T20:44:54","date_gmt":"2026-02-15T20:44:54","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100300"},"modified":"2026-03-05T15:34:20","modified_gmt":"2026-03-05T15:34:20","slug":"vibration-unit-converter","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/nb\/calculators\/vibration-unit-converter\/","title":{"rendered":"Vibrasjonsenhetsomformer: mm\/s \u2194 \u03bcm \u2194 g \u2194 dB | Vibromera"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Vibration Unit Converter\",\"alternateName\":[\"Vibration Conversion Calculator\",\"mm\/s to g Converter\",\"Vibration dB Calculator\"],\"description\":\"Free online vibration unit converter. Convert between velocity (mm\/s), displacement (\u03bcm), acceleration (g, m\/s\u00b2), and dB at any frequency.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/vibration-unit-converter\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any (Web Browser)\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2024-01-01\",\"dateModified\":\"2025-02-14\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true,\"featureList\":[\"Velocity, displacement, acceleration conversions\",\"RMS, peak, and peak-to-peak values\",\"dB reference 10\u207b\u2076 m\/s\",\"Frequency in Hz or RPM\",\"Auto-calculation on input change\",\"URL parameter sharing\"],\"keywords\":\"vibration unit converter, mm\/s, \u03bcm, g, m\/s\u00b2, dB, vibration conversion\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"How do I convert vibration velocity to displacement?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Displacement = Velocity \/ (2\u03c0f), where f is the frequency in Hz. For example, 1 mm\/s RMS at 50 Hz gives displacement = 1\/(2\u03c0\u00d750) = 0.00318 mm = 3.18 \u03bcm 0-pk. Peak-to-peak is double the 0-pk value.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the dB reference for vibration velocity?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The standard reference for vibration velocity in dB is 10\u207b\u2076 m\/s (1 \u03bcm\/s or 10\u207b\u00b3 mm\/s). The formula is dB = 20 \u00d7 log\u2081\u2080(v \/ v_ref), where v is the RMS velocity in m\/s and v_ref = 10\u207b\u2076 m\/s.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the relationship between RMS and peak vibration values?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For a sinusoidal signal, Peak = RMS \u00d7 \u221a2 (\u2248 1.414). Peak-to-peak = 2 \u00d7 Peak. This relationship only holds exactly for pure sinusoidal vibration.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I convert mm\/s to g (acceleration)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"First convert velocity to acceleration: a = v \u00d7 2\u03c0f. If velocity is in mm\/s, divide by 1000 to get m\/s, then a = (v\/1000) \u00d7 2\u03c0f gives m\/s\u00b2. Divide by 9.80665 to get g.\"}},\n{\"@type\":\"Question\",\"name\":\"Why does vibration conversion require frequency?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Velocity, displacement, and acceleration are related through derivatives in time. Since d\/dt of a sinusoid at frequency f multiplies the amplitude by 2\u03c0f, you need the frequency to convert between these quantities.\"}}\n]}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[\n{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},\n{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},\n{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Vibration Unit Converter\",\"item\":\"https:\/\/vibromera.eu\/calculators\/vibration-unit-converter\/\"}\n]}\n<\/script>\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&#038;family=JetBrains+Mono:wght@400;500;600&#038;family=Fraunces:opsz,wght@9..144,700;9..144,800&#038;display=swap\" rel=\"stylesheet\">\n\n<link rel=\"stylesheet\" href=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.css\">\n\n<style>\n:root {\n    --vc-bg: #f4f1ec;\n    --vc-surface: #ffffff;\n    --vc-surface-alt: #f8f6f2;\n    --vc-ink: #1a1a1a;\n    --vc-ink-secondary: #5a5650;\n    --vc-ink-muted: #8a857e;\n    --vc-accent: #c85a2a;\n    --vc-accent-hover: #b04d22;\n    --vc-accent-light: #fdf0ea;\n    --vc-blue: #2a5c8c;\n    --vc-blue-light: #eaf1f8;\n    --vc-green: #2a7a4b;\n    --vc-green-light: #eaf8ef;\n    --vc-yellow: #a67c00;\n    --vc-yellow-light: #fef9e8;\n    --vc-red: #b91c1c;\n    --vc-red-light: #fef2f2;\n    --vc-border: #d9d4cc;\n    --vc-border-light: #e8e4dd;\n    --vc-shadow: 0 1px 3px rgba(26,26,26,0.06), 0 4px 12px rgba(26,26,26,0.04);\n    --vc-shadow-lg: 0 4px 12px rgba(26,26,26,0.08), 0 16px 40px rgba(26,26,26,0.06);\n    --vc-radius: 8px;\n    --vc-radius-lg: 12px;\n    --vc-font: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;\n    --vc-mono: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;\n    --vc-display: 'Fraunces', Georgia, serif;\n}\n\n.vc-calculator {\n    font-family: var(--vc-font);\n    font-size: 15px;\n    line-height: 1.65;\n    color: var(--vc-ink);\n    max-width: 960px;\n    margin: 0 auto;\n    padding: 20px 16px 40px;\n    -webkit-font-smoothing: antialiased;\n}\n.vc-calculator *, .vc-calculator *::before, .vc-calculator *::after { box-sizing: border-box; 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color:#fff; background:var(--vc-accent); border-radius:var(--vc-radius); text-decoration:none; white-space:nowrap; transition:background 0.15s; }\n.vc-promo-link:hover { background:var(--vc-accent-hover); }\n\n\/* \u2500\u2500 FOOTER \u2500\u2500 *\/\n.vc-footer { text-align:center; padding:32px 16px; font-size:13px; color:var(--vc-ink-muted); }\n.vc-footer a { color:var(--vc-accent); text-decoration:none; }\n.vc-footer a:hover { text-decoration:underline; }\n.vc-footer-links { margin-top:8px; font-size:12px; }\n.vc-footer-links a { margin:0 8px; }\n\n\/* \u2500\u2500 PRINT \u2500\u2500 *\/\n@media print {\n    .vc-section-body { max-height:none!important; }\n    .vc-faq-a { max-height:none!important; }\n    .vc-results { max-height:none!important; padding:24px!important; }\n    .vc-copy-btn, .vc-section-chevron, .vc-faq-chevron, .vc-presets, .vc-promo { display:none!important; }\n}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-vibration-unit-converter\">\n\n<!-- Header -->\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool \u00b7 #006<\/p>\n    <h1 class=\"vc-header-title\">Vibration Unit Converter<\/h1>\n    <p class=\"vc-header-subtitle\">Convert between vibration velocity, displacement, acceleration, and dB at any frequency. All results shown simultaneously.<\/p>\n    <div class=\"vc-badges\">\n        <span class=\"vc-badge\">mm\/s \u2194 \u03bcm<\/span>\n        <span class=\"vc-badge\">g \u2194 m\/s\u00b2<\/span>\n        <span class=\"vc-badge\">dB ref 10\u207b\u2076 m\/s<\/span>\n    <\/div>\n<\/header>\n\n<!-- Calculator Card -->\n<div class=\"vc-card\">\n    <div class=\"vc-unit-bar\">\n        <button type=\"button\" class=\"vc-unit-btn vc-active\" data-system=\"metric\">Metric (mm\/s, \u03bcm, m\/s\u00b2)<\/button>\n        <button type=\"button\" class=\"vc-unit-btn\" data-system=\"imperial\">Imperial (in\/s, mil, g)<\/button>\n    <\/div>\n\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-value\">Value<\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-value\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 1.0\" value=\"1\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-unit\">Input Unit<\/label>\n                <select class=\"vc-select\" id=\"vc-unit\">\n                    <option value=\"vel_rms\">mm\/s RMS (velocity)<\/option>\n                    <option value=\"vel_peak\">mm\/s peak (velocity)<\/option>\n                    <option value=\"disp_pp\">\u03bcm peak-to-peak (displacement)<\/option>\n                    <option value=\"disp_0pk\">\u03bcm 0-peak (displacement)<\/option>\n                    <option value=\"acc_rms\">m\/s\u00b2 RMS (acceleration)<\/option>\n                    <option value=\"acc_peak\">m\/s\u00b2 peak (acceleration)<\/option>\n                    <option value=\"g_rms\">g RMS (acceleration)<\/option>\n                    <option value=\"g_peak\">g peak (acceleration)<\/option>\n                    <option value=\"db\">dB ref 10\u207b\u2076 m\/s (velocity)<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-freq\">Frequency<\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-freq\" inputmode=\"decimal\" step=\"any\" min=\"0.01\" placeholder=\"e.g. 50\" value=\"50\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\">Frequency Unit<\/label>\n                <div class=\"vc-freq-toggle\">\n                    <input type=\"radio\" name=\"freq-unit\" id=\"vc-freq-hz\" value=\"hz\" checked>\n                    <label for=\"vc-freq-hz\">Hz<\/label>\n                    <input type=\"radio\" name=\"freq-unit\" id=\"vc-freq-rpm\" value=\"rpm\">\n                    <label for=\"vc-freq-rpm\">RPM<\/label>\n                <\/div>\n            <\/div>\n        <\/div>\n\n        <!-- Presets -->\n        <div class=\"vc-presets\">\n            <div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-v=\"1\" data-u=\"vel_rms\" data-f=\"50\" data-fu=\"hz\">1 mm\/s @ 50 Hz<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-v=\"10\" data-u=\"disp_pp\" data-f=\"100\" data-fu=\"hz\">10 \u03bcm pp @ 100 Hz<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-v=\"0.5\" data-u=\"g_rms\" data-f=\"25\" data-fu=\"hz\">0.5 g @ 25 Hz<\/button>\n        <\/div>\n    <\/form>\n\n    <!-- Results -->\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\">\n            <h2 class=\"vc-results-title\">Results<\/h2>\n            <button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\">\n                <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg>\n                Copy\n            <\/button>\n        <\/div>\n\n        <div class=\"vc-result-group-title\">Velocity<\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\">\n                <div class=\"vc-rcard-label\">Velocity RMS<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-vel-rms\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Velocity Peak<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-vel-peak\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Velocity dB<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-vel-db\">\u2014<\/div>\n            <\/div>\n        <\/div>\n\n        <div class=\"vc-result-group-title\">Displacement<\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Displacement 0-Peak<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-disp-0pk\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Displacement Peak-to-Peak<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-disp-pp\">\u2014<\/div>\n            <\/div>\n        <\/div>\n\n        <div class=\"vc-result-group-title\">Acceleration<\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Acceleration RMS<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-acc-rms\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Acceleration Peak<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-acc-peak\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Acceleration RMS (g)<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-g-rms\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Acceleration Peak (g)<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-g-peak\">\u2014<\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Theory & Reference -->\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\">\n        <span class=\"vc-section-toggle-text\">\n            <span class=\"vc-section-icon\">\ud83d\udcd8<\/span>\n            <span class=\"vc-section-title\">Theory &amp; Formulas<\/span>\n        <\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner vc-theory\">\n            <h3>Vibration Relationships<\/h3>\n            <p>For a sinusoidal vibration signal at angular frequency \u03c9 = 2\u03c0f, the three vibration quantities \u2014 displacement (d), velocity (v), and acceleration (a) \u2014 are related by differentiation:<\/p>\n            <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n            <div class=\"vc-formula-box\" id=\"vc-katex-2\"><\/div>\n            <div class=\"vc-formula-box\" id=\"vc-katex-3\"><\/div>\n\n            <h3>RMS vs Peak vs Peak-to-Peak<\/h3>\n            <p>For a pure sinusoidal signal:<\/p>\n            <ul>\n                <li><strong>Peak = RMS \u00d7 \u221a2<\/strong> (\u2248 1.414)<\/li>\n                <li><strong>Peak-to-Peak = 2 \u00d7 Peak<\/strong><\/li>\n                <li><strong>RMS = Peak \/ \u221a2<\/strong> (\u2248 0.7071)<\/li>\n            <\/ul>\n\n            <h3>Decibel Scale (dB)<\/h3>\n            <p>Vibration velocity is often expressed in dB with a reference of 10\u207b\u2076 m\/s (= 10\u207b\u00b3 mm\/s):<\/p>\n            <div class=\"vc-formula-box\" id=\"vc-katex-4\"><\/div>\n            <p>For example, 1 mm\/s RMS = 10\u207b\u00b3 m\/s \u2192 dB = 20 \u00d7 log\u2081\u2080(10\u207b\u00b3 \/ 10\u207b\u2076) = 20 \u00d7 3 = <strong>60 dB<\/strong>.<\/p>\n\n            <h3>Quick Reference Table<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>Velocity (mm\/s RMS)<\/th><th>dB ref 10\u207b\u2076 m\/s<\/th><th>Typical Assessment<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>0.28<\/td><td>49<\/td><td>Very good (new machines)<\/td><\/tr>\n                    <tr><td>0.71<\/td><td>57<\/td><td>Good<\/td><\/tr>\n                    <tr><td>1.12<\/td><td>61<\/td><td>Satisfactory (Group 1)<\/td><\/tr>\n                    <tr><td>1.8<\/td><td>65<\/td><td>Satisfactory (Group 2)<\/td><\/tr>\n                    <tr><td>2.8<\/td><td>69<\/td><td>Acceptable (Group 2)<\/td><\/tr>\n                    <tr><td>4.5<\/td><td>73<\/td><td>Unacceptable for most<\/td><\/tr>\n                    <tr><td>7.1<\/td><td>77<\/td><td>Danger zone<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n\n            <div class=\"vc-warning-box\">\n                <p style=\"margin:0;font-size:14px;color:var(--vc-ink-secondary);\"><strong>\u26a0\ufe0f Note:<\/strong> These conversions assume pure sinusoidal (single-frequency) vibration. Real-world signals are complex and may contain many harmonics; broadband RMS values do not convert directly with these formulas.<\/p>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Related Calculators -->\n<div class=\"vc-section\" id=\"vc-sec-related\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\">\n            <span class=\"vc-section-icon\">\ud83d\udd17<\/span>\n            <span class=\"vc-section-title\">Related Calculators<\/span>\n        <\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner\">\n            <div class=\"vc-related\">\n                <a class=\"vc-related-link\" href=\"\/calculators\/vibration-velocity\/\">Vibration Velocity (ISO 10816)<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/vibration-displacement\/\">Vibration Displacement<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/vibration-acceleration\/\">Vibration Acceleration<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/harmonic-frequency-calculator\/\">Harmonic Frequency Calculator<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/centrifugal-force-unbalance\/\">Centrifugal Force from Unbalance<\/a>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- FAQ -->\n<div class=\"vc-section\" id=\"vc-sec-faq\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\">\n            <span class=\"vc-section-icon\">\u2753<\/span>\n            <span class=\"vc-section-title\">Frequently Asked Questions<\/span>\n        <\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner\">\n            <div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Promo -->\n<div class=\"vc-promo\">\n    <div class=\"vc-promo-text\">\n        <strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>\n        Professional field balancing instruments and vibration analyzers. Measure velocity, displacement, and acceleration with a single device.\n    <\/div>\n    <a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a>\n<\/div>\n\n<!-- Footer -->\n<footer class=\"vc-footer\">\n    <p>\u00a9 2024\u20132025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> \u2014 Engineering Calculators<\/p>\n    <p style=\"font-size:12px;margin-top:4px;\">Standard vibration unit conversions. Last updated: February 2025<\/p>\n    <div class=\"vc-footer-links\">\n        <a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a>\n        <a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a>\n    <\/div>\n<\/footer>\n\n<\/div>\n\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function() {\n    'use strict';\n\n    var SLUG = 'vibration-unit-converter';\n    var unitSystem = 'metric';\n    var G = 9.80665;\n    var SQRT2 = Math.SQRT2;\n    var DB_REF = 1e-6; \/\/ m\/s\n\n    \/\/ Imperial factors\n    var MMS_TO_INS = 0.03937;\n    var UM_TO_MIL = 0.03937;\n\n    function $(id) { return document.getElementById(id); }\n    function fmt(n, d) {\n        if (isNaN(n) || !isFinite(n)) return '\u2014';\n        if (Math.abs(n) >= 1e6) return n.toExponential(2);\n        if (Math.abs(n) < 0.001 && n !== 0) return n.toExponential(3);\n        var f = n.toFixed(d === undefined ? 4 : d);\n        return f.replace(\/(\\.\\d*?)0+$\/, '$1').replace(\/\\.$\/, '');\n    }\n\n    function getFreqHz() {\n        var f = parseFloat($('vc-freq').value);\n        if (!f || f <= 0) return NaN;\n        var isRPM = document.querySelector('input[name=\"freq-unit\"]:checked').value === 'rpm';\n        return isRPM ? f \/ 60 : f;\n    }\n\n    \/* \u2500\u2500 CALCULATION \u2500\u2500 *\/\n    function calculate() {\n        var val = parseFloat($('vc-value').value);\n        var unit = $('vc-unit').value;\n        var fHz = getFreqHz();\n\n        if (isNaN(val) || val < 0 || isNaN(fHz) || fHz <= 0) {\n            $('vc-results').classList.remove('vc-visible');\n            return;\n        }\n\n        var omega = 2 * Math.PI * fHz;\n\n        \/\/ Step 1: Convert input to velocity RMS in mm\/s\n        var v_rms_mms;\n        switch (unit) {\n            case 'vel_rms':\n                v_rms_mms = val;\n                break;\n            case 'vel_peak':\n                v_rms_mms = val \/ SQRT2;\n                break;\n            case 'disp_pp':\n                \/\/ d_pp in \u03bcm \u2192 d_0pk = d_pp\/2 in \u03bcm \u2192 v_peak = d_0pk * \u03c9 (\u03bcm\u2192mm: \/1000) \u2192 v_peak in mm\/s\n                v_rms_mms = (val \/ 2) * omega \/ 1000 \/ SQRT2;\n                break;\n            case 'disp_0pk':\n                \/\/ d_0pk in \u03bcm \u2192 v_peak = d_0pk * \u03c9 \/ 1000 mm\/s\n                v_rms_mms = val * omega \/ 1000 \/ SQRT2;\n                break;\n            case 'acc_rms':\n                \/\/ a_rms in m\/s\u00b2 \u2192 v_rms = a_rms \/ \u03c9 in m\/s \u2192 \u00d71000 for mm\/s\n                v_rms_mms = (val \/ omega) * 1000;\n                break;\n            case 'acc_peak':\n                v_rms_mms = (val \/ SQRT2 \/ omega) * 1000;\n                break;\n            case 'g_rms':\n                v_rms_mms = (val * G \/ omega) * 1000;\n                break;\n            case 'g_peak':\n                v_rms_mms = (val \/ SQRT2 * G \/ omega) * 1000;\n                break;\n            case 'db':\n                \/\/ dB = 20*log10(v_rms_m_s \/ 1e-6)\n                \/\/ v_rms_m_s = 1e-6 * 10^(dB\/20)\n                var v_rms_ms = DB_REF * Math.pow(10, val \/ 20);\n                v_rms_mms = v_rms_ms * 1000;\n                break;\n        }\n\n        \/\/ Step 2: Calculate all quantities from v_rms_mms\n        var v_peak_mms = v_rms_mms * SQRT2;\n        var v_rms_ms = v_rms_mms \/ 1000;\n        var dB = 20 * Math.log10(v_rms_ms \/ DB_REF);\n\n        var d_0pk_um = v_peak_mms \/ omega * 1000; \/\/ mm\/s \u2192 \u03bcm: v_peak \/ \u03c9 gives mm, \u00d71000 = \u03bcm\n        var d_pp_um = 2 * d_0pk_um;\n\n        var a_peak_ms2 = v_peak_mms * omega \/ 1000; \/\/ mm\/s \u00d7 rad\/s \/ 1000 = m\/s\u00b2\n        var a_rms_ms2 = a_peak_ms2 \/ SQRT2;\n        var g_rms = a_rms_ms2 \/ G;\n        var g_peak = a_peak_ms2 \/ G;\n\n        \/\/ Step 3: Display\n        if (unitSystem === 'imperial') {\n            $('vc-r-vel-rms').innerHTML = fmt(v_rms_mms * MMS_TO_INS, 4) + ' <span class=\"vc-rcard-unit\">in\/s RMS<\/span>';\n            $('vc-r-vel-peak').innerHTML = fmt(v_peak_mms * MMS_TO_INS, 4) + ' <span class=\"vc-rcard-unit\">in\/s peak<\/span>';\n            $('vc-r-disp-0pk').innerHTML = fmt(d_0pk_um * UM_TO_MIL, 4) + ' <span class=\"vc-rcard-unit\">mil 0-pk<\/span>';\n            $('vc-r-disp-pp').innerHTML = fmt(d_pp_um * UM_TO_MIL, 4) + ' <span class=\"vc-rcard-unit\">mil p-p<\/span>';\n        } else {\n            $('vc-r-vel-rms').innerHTML = fmt(v_rms_mms, 4) + ' <span class=\"vc-rcard-unit\">mm\/s RMS<\/span>';\n            $('vc-r-vel-peak').innerHTML = fmt(v_peak_mms, 4) + ' <span class=\"vc-rcard-unit\">mm\/s peak<\/span>';\n            $('vc-r-disp-0pk').innerHTML = fmt(d_0pk_um, 4) + ' <span class=\"vc-rcard-unit\">\u03bcm 0-pk<\/span>';\n            $('vc-r-disp-pp').innerHTML = fmt(d_pp_um, 4) + ' <span class=\"vc-rcard-unit\">\u03bcm p-p<\/span>';\n        }\n\n        $('vc-r-vel-db').innerHTML = fmt(dB, 1) + ' <span class=\"vc-rcard-unit\">dB ref 10\u207b\u2076 m\/s<\/span>';\n        $('vc-r-acc-rms').innerHTML = fmt(a_rms_ms2, 4) + ' <span class=\"vc-rcard-unit\">m\/s\u00b2 RMS<\/span>';\n        $('vc-r-acc-peak').innerHTML = fmt(a_peak_ms2, 4) + ' <span class=\"vc-rcard-unit\">m\/s\u00b2 peak<\/span>';\n        $('vc-r-g-rms').innerHTML = fmt(g_rms, 4) + ' <span class=\"vc-rcard-unit\">g RMS<\/span>';\n        $('vc-r-g-peak').innerHTML = fmt(g_peak, 4) + ' <span class=\"vc-rcard-unit\">g peak<\/span>';\n\n        $('vc-results').classList.add('vc-visible');\n\n        \/\/ URL params\n        var u = new URL(window.location);\n        u.searchParams.set('value', $('vc-value').value);\n        u.searchParams.set('unit', unit);\n        u.searchParams.set('freq', $('vc-freq').value);\n        u.searchParams.set('frequnit', document.querySelector('input[name=\"freq-unit\"]:checked').value);\n        history.replaceState(null, '', u.toString());\n\n        \/\/ History\n        saveHistory({\n            value: $('vc-value').value,\n            unit: unit,\n            freq: $('vc-freq').value,\n            _summary: val + ' ' + unit + ' @ ' + $('vc-freq').value + ' ' + document.querySelector('input[name=\"freq-unit\"]:checked').value\n        });\n    }\n\n    \/* \u2500\u2500 UNIT TOGGLE \u2500\u2500 *\/\n    var unitBtns = document.querySelectorAll('.vc-unit-btn');\n    unitBtns.forEach(function(btn) {\n        btn.addEventListener('click', function() {\n            unitBtns.forEach(function(b) { b.classList.remove('vc-active'); });\n            this.classList.add('vc-active');\n            unitSystem = this.getAttribute('data-system');\n            try { localStorage.setItem('vc_units', unitSystem); } catch(e) {}\n            calculate();\n        });\n    });\n\n    \/* \u2500\u2500 PRESETS \u2500\u2500 *\/\n    document.querySelectorAll('.vc-preset-btn').forEach(function(btn) {\n        btn.addEventListener('click', function(e) {\n            e.preventDefault();\n            $('vc-value').value = this.getAttribute('data-v');\n            $('vc-unit').value = this.getAttribute('data-u');\n            $('vc-freq').value = this.getAttribute('data-f');\n            var fu = this.getAttribute('data-fu');\n            document.getElementById('vc-freq-' + fu).checked = true;\n            calculate();\n        });\n    });\n\n    \/* \u2500\u2500 AUTO-CALCULATE \u2500\u2500 *\/\n    $('vc-form').addEventListener('input', calculate);\n    $('vc-form').addEventListener('change', calculate);\n\n    \/* \u2500\u2500 COPY \u2500\u2500 *\/\n    $('vc-copy-btn').addEventListener('click', function() {\n        var text = 'Vibration Unit Conversion\\n' +\n            '\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\n' +\n            'Input: ' + $('vc-value').value + ' ' + $('vc-unit').options[$('vc-unit').selectedIndex].text + '\\n' +\n            'Frequency: ' + $('vc-freq').value + ' ' + document.querySelector('input[name=\"freq-unit\"]:checked').value.toUpperCase() + '\\n' +\n            '\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\n' +\n            'Velocity RMS: ' + $('vc-r-vel-rms').textContent + '\\n' +\n            'Velocity Peak: ' + $('vc-r-vel-peak').textContent + '\\n' +\n            'Velocity dB: ' + $('vc-r-vel-db').textContent + '\\n' +\n            'Disp 0-pk: ' + $('vc-r-disp-0pk').textContent + '\\n' +\n            'Disp p-p: ' + $('vc-r-disp-pp').textContent + '\\n' +\n            'Accel RMS: ' + $('vc-r-acc-rms').textContent + '\\n' +\n            'Accel Peak: ' + $('vc-r-acc-peak').textContent + '\\n' +\n            'g RMS: ' + $('vc-r-g-rms').textContent + '\\n' +\n            'g Peak: ' + $('vc-r-g-peak').textContent + '\\n' +\n            '\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\n' +\n            'vibromera.eu\/calculators\/vibration-unit-converter\/';\n\n        if (navigator.clipboard) {\n            navigator.clipboard.writeText(text).then(function() {\n                var btn = $('vc-copy-btn');\n                btn.classList.add('vc-copied');\n                btn.innerHTML = '<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg> Copied!';\n                setTimeout(function() {\n                    btn.classList.remove('vc-copied');\n                    btn.innerHTML = '<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy';\n                }, 2000);\n            });\n        }\n    });\n\n    \/* \u2500\u2500 COLLAPSIBLE SECTIONS \u2500\u2500 *\/\n    document.querySelectorAll('.vc-section-toggle').forEach(function(btn) {\n        btn.addEventListener('click', function() {\n            var section = this.closest('.vc-section');\n            var isOpen = section.classList.contains('vc-open');\n            section.classList.toggle('vc-open');\n            this.setAttribute('aria-expanded', !isOpen);\n        });\n    });\n\n    \/* \u2500\u2500 FAQ \u2500\u2500 *\/\n    var faqData = [\n        { q: 'How do I convert vibration velocity to displacement?', a: '<p>Displacement = Velocity \/ (2\u03c0f), where f is the frequency in Hz. Specifically, for peak values: d_0pk (\u03bcm) = v_peak (mm\/s) \/ (2\u03c0f) \u00d7 1000. The peak-to-peak displacement is double the 0-peak value.<\/p>' },\n        { q: 'What is the dB reference for vibration velocity?', a: '<p>The standard reference for vibration velocity in dB is <strong>10\u207b\u2076 m\/s<\/strong> (= 1 \u03bcm\/s = 10\u207b\u00b3 mm\/s). The formula is:<\/p><p>dB = 20 \u00d7 log\u2081\u2080(v_RMS \/ 10\u207b\u2076)<\/p><p>where v_RMS is in m\/s. For example, 1 mm\/s RMS = 60 dB.<\/p>' },\n        { q: 'What is the relationship between RMS and peak vibration values?', a: '<p>For a pure sinusoidal signal:<\/p><ul><li>Peak = RMS \u00d7 \u221a2 \u2248 RMS \u00d7 1.414<\/li><li>Peak-to-Peak = 2 \u00d7 Peak<\/li><li>RMS = Peak \/ \u221a2 \u2248 Peak \u00d7 0.7071<\/li><\/ul><p>These ratios only hold for pure sine waves. For complex vibration signals with multiple harmonics, the crest factor (Peak\/RMS) will differ from \u221a2.<\/p>' },\n        { q: 'How do I convert mm\/s to g (acceleration)?', a: '<p>First convert velocity to acceleration using a = v \u00d7 2\u03c0f. With velocity in mm\/s:<\/p><p>a (m\/s\u00b2) = v (mm\/s) \u00d7 2\u03c0f \/ 1000<\/p><p>Then divide by g = 9.80665 m\/s\u00b2 to get the value in g units. Note: this requires knowing the vibration frequency.<\/p>' },\n        { q: 'Why does vibration conversion require frequency?', a: '<p>Velocity, displacement, and acceleration are related through calculus \u2014 each is the time derivative of the previous. For a sinusoid at frequency f, differentiating multiplies the amplitude by 2\u03c0f. Therefore, converting between these quantities requires knowing the frequency.<\/p><p>Only conversions within the same quantity (e.g., RMS to peak) are frequency-independent.<\/p>' }\n    ];\n\n    var faqList = $('vc-faq-list');\n    faqData.forEach(function(faq) {\n        faqList.innerHTML += '<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>' + faq.q + '<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">' + faq.a + '<\/div><\/div><\/div>';\n    });\n    faqList.addEventListener('click', function(e) {\n        var btn = e.target.closest('.vc-faq-q');\n        if (!btn) return;\n        btn.closest('.vc-faq-item').classList.toggle('vc-open');\n    });\n\n    \/* \u2500\u2500 HISTORY \u2500\u2500 *\/\n    function saveHistory(entry) {\n        var key = 'vc_history_' + SLUG;\n        var arr = [];\n        try { arr = JSON.parse(localStorage.getItem(key)) || []; } catch(e) {}\n        entry._ts = new Date().toISOString();\n        arr.unshift(entry);\n        if (arr.length > 10) arr = arr.slice(0, 10);\n        try { localStorage.setItem(key, JSON.stringify(arr)); } catch(e) {}\n    }\n\n    \/* \u2500\u2500 URL PARAMS \u2500\u2500 *\/\n    function loadParams() {\n        var p = new URLSearchParams(window.location.search);\n        if (p.has('value')) $('vc-value').value = p.get('value');\n        if (p.has('unit')) $('vc-unit').value = p.get('unit');\n        if (p.has('freq')) $('vc-freq').value = p.get('freq');\n        if (p.has('frequnit')) {\n            var el = document.getElementById('vc-freq-' + p.get('frequnit'));\n            if (el) el.checked = true;\n        }\n    }\n\n    \/* \u2500\u2500 KATEX \u2500\u2500 *\/\n    function renderFormulas() {\n        try {\n            katex.render('v = d \\\\cdot \\\\omega = d \\\\cdot 2\\\\pi f', $('vc-katex-1'), { displayMode: true, throwOnError: false });\n            katex.render('a = v \\\\cdot \\\\omega = v \\\\cdot 2\\\\pi f', $('vc-katex-2'), { displayMode: true, throwOnError: false });\n            katex.render('d = \\\\frac{v}{\\\\omega} = \\\\frac{v}{2\\\\pi f}', $('vc-katex-3'), { displayMode: true, throwOnError: false });\n            katex.render('\\\\text{dB} = 20 \\\\cdot \\\\log_{10}\\\\!\\\\left(\\\\frac{v_{\\\\text{RMS}}}{v_{\\\\text{ref}}}\\\\right), \\\\quad v_{\\\\text{ref}} = 10^{-6}\\\\;\\\\text{m\/s}', $('vc-katex-4'), { displayMode: true, throwOnError: false });\n        } catch(e) {}\n    }\n\n    \/* \u2500\u2500 INIT \u2500\u2500 *\/\n    function init() {\n        try {\n            var saved = localStorage.getItem('vc_units');\n            if (saved === 'imperial') {\n                unitSystem = 'imperial';\n                unitBtns.forEach(function(b) { b.classList.toggle('vc-active', b.getAttribute('data-system') === 'imperial'); });\n            }\n        } catch(e) {}\n\n        loadParams();\n        renderFormulas();\n        calculate();\n    }\n\n    if (document.readyState === 'loading') {\n        document.addEventListener('DOMContentLoaded', init);\n    } else {\n        init();\n    }\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Gratis online vibrasjonsenhetskonverterer. Konverter mellom hastighet (mm\/s), forskyvning (\u03bcm), akselerasjon (g, m\/s\u00b2) og dB ved enhver frekvens. \u00d8yeblikkelige resultater for alle vibrasjonsenheter.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100300","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100300","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100300\/revisions"}],"predecessor-version":[{"id":100735,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100300\/revisions\/100735"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=100300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=100300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=100300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}