{"id":100150,"date":"2026-02-15T20:21:10","date_gmt":"2026-02-15T20:21:10","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100150"},"modified":"2026-04-05T15:40:58","modified_gmt":"2026-04-05T15:40:58","slug":"mass-weight-converter","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/sw\/calculators\/mass-weight-converter\/","title":{"rendered":"Kibadilishaji cha Masi &amp; Uzito: kg, lb, oz, tani | Vibromera"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Mass & Weight Converter\",\"description\":\"Free online mass and weight unit converter with all major metric and imperial 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24px;border-top:1px solid var(--vc-border-light)}\n.vc-table{width:100%;border-collapse:collapse;margin:14px 0;font-size:13px}.vc-table th,.vc-table td{padding:10px 12px;border:1px solid var(--vc-border-light);text-align:left}.vc-table th{background:var(--vc-surface-alt);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--vc-ink-secondary)}.vc-table tr:nth-child(even){background:var(--vc-surface-alt)}\n.vc-related{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.vc-related-link{display:inline-block;padding:8px 16px;font-family:var(--vc-font);font-size:13px;font-weight:600;background:var(--vc-surface-alt);color:var(--vc-ink-secondary);border:1px solid var(--vc-border);border-radius:var(--vc-radius);text-decoration:none;transition:all .15s}.vc-related-link:hover{border-color:var(--vc-accent);color:var(--vc-accent);background:var(--vc-accent-light)}\n.vc-faq-list{display:flex;flex-direction:column;gap:8px;margin-top:20px}.vc-faq-item{border:1px solid var(--vc-border-light);border-radius:6px;overflow:hidden}.vc-faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border:none;background:var(--vc-surface-alt);cursor:pointer;font-family:var(--vc-font);font-size:15px;font-weight:600;color:var(--vc-ink);text-align:left}.vc-faq-q:hover{background:#ede9e3}.vc-faq-chevron{width:16px;height:16px;color:var(--vc-ink-muted);flex-shrink:0;transition:transform .25s}.vc-faq-item.vc-open .vc-faq-chevron{transform:rotate(180deg)}.vc-faq-a{max-height:0;overflow:hidden;transition:max-height .35s}.vc-faq-item.vc-open .vc-faq-a{max-height:1200px}.vc-faq-a-inner{padding:14px 16px;border-top:1px solid var(--vc-border-light);font-size:14px;color:var(--vc-ink-secondary)}.vc-faq-a-inner p{margin:0 0 8px}.vc-faq-a-inner p:last-child{margin-bottom:0}\n.vc-promo{margin-top:24px;padding:20px;background:linear-gradient(135deg,var(--vc-accent-light),var(--vc-surface));border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);display:flex;align-items:center;gap:16px}.vc-promo-text{flex:1;font-size:14px;color:var(--vc-ink-secondary)}.vc-promo-text strong{color:var(--vc-ink)}.vc-promo-link{padding:8px 20px;font-size:13px;font-weight:700;color:#fff;background:var(--vc-accent);border-radius:var(--vc-radius);text-decoration:none;white-space:nowrap;transition:background .15s}.vc-promo-link:hover{background:var(--vc-accent-hover)}\n.vc-footer{text-align:center;padding:32px 16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}\n@media print{.vc-section-body{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-promo{display:none!important}}\n<\/style>\n\n<div class=\"vc-calculator\">\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool<\/p>\n    <h1 class=\"vc-header-title\">Mass &amp; Weight Converter<\/h1>\n    <p class=\"vc-header-subtitle\">Convert between all major mass and weight units instantly. Metric and imperial units shown simultaneously.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">kg<\/span><span class=\"vc-badge\">lb<\/span><span class=\"vc-badge\">oz<\/span><span class=\"vc-badge\">tonne<\/span><span class=\"vc-badge\">stone<\/span><span class=\"vc-badge\">grain<\/span><\/div>\n<\/header>\n\n<div class=\"vc-card\">\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-value\">Value<\/label><input class=\"vc-input\" type=\"number\" id=\"vc-value\" inputmode=\"decimal\" step=\"any\" value=\"100\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-unit\">Unit<\/label>\n                <select class=\"vc-select\" id=\"vc-unit\">\n                    <option value=\"kg\" selected>Kilogram (kg)<\/option>\n                    <option value=\"g\">Gram (g)<\/option>\n                    <option value=\"mg\">Milligram (mg)<\/option>\n                    <option value=\"tonne\">Tonne (metric ton)<\/option>\n                    <option value=\"lb\">Pound (lb)<\/option>\n                    <option value=\"oz\">Ounce (oz)<\/option>\n                    <option value=\"stone\">Stone (st)<\/option>\n                    <option value=\"short_ton\">Short Ton (US, 2000 lb)<\/option>\n                    <option value=\"long_ton\">Long Ton (UK, 2240 lb)<\/option>\n                    <option value=\"grain\">Grain (gr)<\/option>\n                <\/select>\n            <\/div>\n        <\/div>\n    <\/form>\n\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\">\n            <h2 class=\"vc-results-title\">All Units<\/h2>\n            <button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\"><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<\/button>\n        <\/div>\n        <div class=\"vc-result-grid\" id=\"vc-result-grid\"><\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section vc-open\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Reference Table<\/span><\/span><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><\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner\">\n            <table class=\"vc-table\"><thead><tr><th>Unit<\/th><th>= Kilograms<\/th><th>Notes<\/th><\/tr><\/thead>\n            <tbody>\n                <tr><td>1 mg<\/td><td>0.000001<\/td><td>Milligram<\/td><\/tr>\n                <tr><td>1 grain<\/td><td>0.00006479891<\/td><td>Troy\/Avoirdupois grain<\/td><\/tr>\n                <tr><td>1 g<\/td><td>0.001<\/td><td>Gram<\/td><\/tr>\n                <tr><td>1 oz<\/td><td>0.028349523<\/td><td>Avoirdupois ounce<\/td><\/tr>\n                <tr><td>1 lb<\/td><td>0.45359237<\/td><td>Avoirdupois pound<\/td><\/tr>\n                <tr><td>1 kg<\/td><td>1<\/td><td>SI base unit<\/td><\/tr>\n                <tr><td>1 stone<\/td><td>6.35029318<\/td><td>14 pounds<\/td><\/tr>\n                <tr><td>1 short ton<\/td><td>907.18474<\/td><td>US ton (2000 lb)<\/td><\/tr>\n                <tr><td>1 long ton<\/td><td>1016.0469<\/td><td>UK\/Imperial ton (2240 lb)<\/td><\/tr>\n                <tr><td>1 tonne<\/td><td>1000<\/td><td>Metric ton<\/td><\/tr>\n            <\/tbody><\/table>\n\n            <h3>Common Engineering Mass Conversions<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>From \u2192 To<\/th><th>Multiply by<\/th><th>Example<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>kg \u2192 lb<\/td><td>2.20462<\/td><td>100 kg = 220.46 lb<\/td><\/tr>\n                    <tr><td>lb \u2192 kg<\/td><td>0.45359<\/td><td>100 lb = 45.36 kg<\/td><\/tr>\n                    <tr><td>oz \u2192 g<\/td><td>28.3495<\/td><td>1 oz = 28.35 g<\/td><\/tr>\n                    <tr><td>g \u2192 oz<\/td><td>0.03527<\/td><td>100 g = 3.53 oz<\/td><\/tr>\n                    <tr><td>tonne \u2192 short ton<\/td><td>1.10231<\/td><td>1 t = 1.102 short tons<\/td><\/tr>\n                    <tr><td>short ton \u2192 tonne<\/td><td>0.90718<\/td><td>1 ST = 0.907 t<\/td><\/tr>\n                    <tr><td>stone \u2192 kg<\/td><td>6.35029<\/td><td>10 stone = 63.5 kg<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>Handy Memorization Tips<\/h3>\n            <ul>\n                <li>1 kg \u2248 2.2 lb (for quick estimates)<\/li>\n                <li>1 lb \u2248 454 g<\/li>\n                <li>1 ounce \u2248 28.35 g<\/li>\n                <li>1 stone = 14 lb = 6.35 kg (used in UK for body weight)<\/li>\n                <li>1 tonne = 1000 kg \u2248 2205 lb<\/li>\n                <li>1 short ton (US) = 2000 lb \u2248 907 kg<\/li>\n                <li>1 long ton (UK) = 2240 lb \u2248 1016 kg<\/li>\n                <li>1 grain \u2248 64.8 mg (used in ballistics and pharmacy)<\/li>\n            <\/ul>\n\n            <h3>Mass vs Weight<\/h3>\n            <p>In everyday use, &#8220;weight&#8221; and &#8220;mass&#8221; are used interchangeably, but they differ:<\/p>\n            <ul>\n                <li><strong>Mass<\/strong> (kg, lb-mass) is the amount of matter \u2014 constant everywhere<\/li>\n                <li><strong>Weight<\/strong> (N, lbf) is the gravitational force \u2014 varies with location<\/li>\n                <li>On Earth&#8217;s surface: Weight (N) = Mass (kg) \u00d7 9.81 m\/s\u00b2<\/li>\n                <li>A 100 kg mass weighs 981 N on Earth but only 163 N on the Moon<\/li>\n            <\/ul>\n\n            <h3>Application-Specific Units<\/h3>\n            <ul>\n                <li><strong>Balancing:<\/strong> Unbalance measured in g\u00b7mm (grams \u00d7 millimeters) or oz\u00b7in (ounces \u00d7 inches)<\/li>\n                <li><strong>Pharmacy:<\/strong> Grains (1 gr = 64.8 mg), drams, scruples<\/li>\n                <li><strong>Precious metals:<\/strong> Troy ounce (31.103 g) \u2260 Avoirdupois ounce (28.350 g)<\/li>\n                <li><strong>Gemstones:<\/strong> Carat (1 ct = 0.2 g)<\/li>\n            <\/ul>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\">\n            <span class=\"vc-section-icon\">\u2696\ufe0f<\/span>\n            <span class=\"vc-section-title\">Common Object Masses (Reference)<\/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            <p style=\"font-size:14px;color:var(--vc-ink-secondary);margin:16px 0 10px;\">Useful mass references for sanity-checking calculations and estimates.<\/p>\n            <table class=\"vc-table\">\n                <thead><tr><th>Object<\/th><th>Mass (kg)<\/th><th>Mass (lb)<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>M10 hex bolt (50mm)<\/td><td>0.035<\/td><td>0.077<\/td><\/tr>\n                    <tr><td>Standard brick<\/td><td>3.1<\/td><td>6.8<\/td><\/tr>\n                    <tr><td>Car wheel (steel, 16&#8243;)<\/td><td>9<\/td><td>20<\/td><\/tr>\n                    <tr><td>Electric motor (1.5 kW, 4-pole)<\/td><td>15<\/td><td>33<\/td><\/tr>\n                    <tr><td>Electric motor (7.5 kW, 4-pole)<\/td><td>42<\/td><td>93<\/td><\/tr>\n                    <tr><td>Pallet of cement (40 bags)<\/td><td>1000<\/td><td>2205<\/td><\/tr>\n                    <tr><td>Small car<\/td><td>1200<\/td><td>2646<\/td><\/tr>\n                    <tr><td>Empty 20ft shipping container<\/td><td>2300<\/td><td>5071<\/td><\/tr>\n                    <tr><td>Loaded 20ft shipping container (max)<\/td><td>28200<\/td><td>62170<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>Steel Weight Quick Estimates<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>Shape<\/th><th>Formula (kg)<\/th><th>Example<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>Steel plate (mm, m\u00b2)<\/td><td>thickness \u00d7 area \u00d7 7.85<\/td><td>10mm \u00d7 1m\u00b2 = 78.5 kg<\/td><\/tr>\n                    <tr><td>Round bar (mm, m)<\/td><td>d\u00b2 \u00d7 length \u00d7 0.00617<\/td><td>\u00f850 \u00d7 1m = 15.4 kg<\/td><\/tr>\n                    <tr><td>Pipe (mm, m)<\/td><td>(OD\u00b2 \u2212 ID\u00b2) \u00d7 L \u00d7 0.00617<\/td><td>\u00f8114.3\u00d73.6mm \u00d7 1m = 9.8 kg<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section\">\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\">FAQ<\/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<div class=\"vc-section\">\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 Converters<\/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\/length-unit-converter\/\">Length Converter<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/force-unit-converter\/\">Force Converter<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/rpm-to-rads-converter\/\">RPM Converter<\/a>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional engineering calculators and measurement instruments.<\/div><a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a><\/div>\n<footer class=\"vc-footer\"><p>&copy; 2024\u20132025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a><\/p><p style=\"font-size:12px;margin-top:4px;\">Mass &amp; Weight Converter. 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A long ton (UK\/Imperial ton) = 2240 lb = 1016.05 kg. The metric tonne = 1000 kg = 2204.62 lb. The long ton is closest to the metric tonne. In international shipping and engineering, the metric tonne is standard.<\/p>'},\n        {q:'Is a Troy ounce the same as a regular ounce?',a:'<p>No. The standard (avoirdupois) ounce = 28.3495 g, used for most everyday weighing. The Troy ounce = 31.1035 g, used for precious metals (gold, silver, platinum). A Troy ounce is about 10% heavier than a regular ounce. Troy pounds also differ: 1 Troy lb = 12 Troy oz = 373.24 g.<\/p>'},\n        {q:'What unit is used for vibration balancing?',a:'<p>Unbalance is measured in mass \u00d7 distance units: g\u00b7mm (grams \u00d7 millimeters) in metric, or oz\u00b7in (ounces \u00d7 inches) in imperial. Conversion: 1 oz\u00b7in = 720 g\u00b7mm. ISO 1940 specifies permissible residual unbalance in g\u00b7mm\/kg.<\/p>'},\n        {q:'How do I convert unbalance between g\u00b7mm and oz\u00b7in?',a:'<p>1 oz\u00b7in = 1 avoirdupois ounce \u00d7 1 inch = 28.3495 g \u00d7 25.4 mm = 720.078 g\u00b7mm. So divide g\u00b7mm by 720 to get oz\u00b7in, or multiply oz\u00b7in by 720 to get g\u00b7mm.<\/p>'},\n        {q:'What does a grain measure?',a:'<p>A grain (gr) = 64.79891 mg = 0.0648 g. It is the same in Troy, avoirdupois, and apothecary systems. Used primarily in ballistics (bullet weight), pharmacy (drug dosage), and sometimes in moisture content measurement. 1 lb = 7000 grains.<\/p>'}\n    ];\n    var fl=$('vc-faq-list');\n    faqData.forEach(function(f){\n        fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.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\">'+f.a+'<\/div><\/div><\/div>';\n    });\n    fl.addEventListener('click',function(e){\n        var b=e.target.closest('.vc-faq-q');\n        if(!b)return;\n        b.closest('.vc-faq-item').classList.toggle('vc-open');\n    });\n\n    function init(){calculate()}\n    if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init)}else{init()}\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Kibadilishi cha mkondoni cha uzito wa wingi na nguvu. Badilisha kati ya kg, g, mg, tonne, lb, oz, stone, short ton, long ton na grain. Vitengo vyote vinaonyeshwa kwa wakati mmoja.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100150","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator\/100150","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator\/100150\/revisions"}],"predecessor-version":[{"id":100943,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator\/100150\/revisions\/100943"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/media?parent=100150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/categories?post=100150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/tags?post=100150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}