{"id":100118,"date":"2026-02-15T20:18:47","date_gmt":"2026-02-15T20:18:47","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100118"},"modified":"2026-02-15T20:18:47","modified_gmt":"2026-02-15T20:18:47","slug":"geometry-calculator","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/nb\/calculators\/geometry-calculator\/","title":{"rendered":"Geometrikalkulator | Areal og volum | Sylinder, kule, kjegle"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Geometry Calculator\",\"description\":\"Calculate area and volume for cylinder, cone, sphere, torus and rectangular prism.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/geometry-calculator\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any\",\"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}<\/script>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What units does this use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Enter dimensions in mm. Results are in mm\u00b2 and mm\u00b3. Divide by 10\u2076 for m\u00b2 or 10\u2079 for m\u00b3.\"}},{\"@type\":\"Question\",\"name\":\"What is a torus?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A donut shape. Defined by major radius R (center to tube center) and minor radius r (tube radius).\"}},{\"@type\":\"Question\",\"name\":\"How to calculate for a hollow cylinder?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Calculate outer and inner cylinders separately, then subtract inner from outer volume.\"}},{\"@type\":\"Question\",\"name\":\"Can I use this for weight?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Multiply volume by material density. E.g., steel: 7850 kg\/m\u00b3.\"}},{\"@type\":\"Question\",\"name\":\"What about irregular shapes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Break into simple shapes, calculate each, then sum volumes.\"}}]}<\/script>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Geometry Calculator\",\"item\":\"https:\/\/vibromera.eu\/calculators\/geometry-calculator\/\"}]}<\/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>:root{--vc-bg:#f4f1ec;--vc-surface:#fff;--vc-surface-alt:#f8f6f2;--vc-ink:#1a1a1a;--vc-ink-secondary:#5a5650;--vc-ink-muted:#8a857e;--vc-accent:#c85a2a;--vc-accent-hover:#b04d22;--vc-accent-light:#fdf0ea;--vc-blue:#2a5c8c;--vc-blue-light:#eaf1f8;--vc-green:#2a7a4b;--vc-green-light:#eaf8ef;--vc-yellow:#a67c00;--vc-yellow-light:#fef9e8;--vc-border:#d9d4cc;--vc-border-light:#e8e4dd;--vc-shadow:0 1px 3px rgba(26,26,26,.06),0 4px 12px rgba(26,26,26,.04);--vc-radius:8px;--vc-radius-lg:12px;--vc-font:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--vc-mono:'JetBrains Mono',Consolas,Monaco,monospace;--vc-display:Fraunces,Georgia,serif}.vc-calculator{font-family:var(--vc-font);font-size:15px;line-height:1.65;color:var(--vc-ink);max-width:960px;margin:0 auto;padding:20px 16px 40px;-webkit-font-smoothing:antialiased}.vc-calculator *,.vc-calculator *::before,.vc-calculator *::after{box-sizing:border-box}.vc-header{text-align:center;padding:48px 24px 40px;position:relative}.vc-header::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:80px;height:3px;background:var(--vc-accent);border-radius:2px}.vc-header-eyebrow{font-family:var(--vc-mono);font-size:11px;font-weight:500;letter-spacing:.15em;text-transform:uppercase;color:var(--vc-accent);margin:0 0 12px}.vc-header-title{font-family:var(--vc-display);font-size:clamp(24px,4vw,36px);font-weight:800;line-height:1.15;color:var(--vc-ink);margin:0 0 16px;letter-spacing:-.02em}.vc-header-subtitle{font-size:15px;color:var(--vc-ink-secondary);margin:0 auto 20px;max-width:600px}.vc-badges{display:inline-flex;gap:8px;flex-wrap:wrap;justify-content:center}.vc-badge{font-family:var(--vc-mono);font-size:11px;font-weight:500;padding:4px 10px;border-radius:4px;background:var(--vc-surface);border:1px solid var(--vc-border);color:var(--vc-ink-secondary)}.vc-card{background:var(--vc-surface);border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);box-shadow:var(--vc-shadow);overflow:hidden;margin-top:32px}.vc-form{padding:24px}.vc-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}@media(max-width:600px){.vc-form-grid{grid-template-columns:1fr}}.vc-field{display:flex;flex-direction:column}.vc-label{font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--vc-ink-secondary);margin-bottom:6px}.vc-label-hint{font-weight:400;text-transform:none;letter-spacing:0;color:var(--vc-ink-muted);font-size:11px}.vc-select,.vc-input{width:100%;padding:10px 12px;border:1.5px solid var(--vc-border);border-radius:6px;font-family:var(--vc-font);font-size:14px;color:var(--vc-ink);background:var(--vc-surface);transition:border-color .15s,box-shadow .15s}.vc-select{padding-right:36px;appearance:none;cursor:pointer;background-image:url(\"data:image\/svg+xml,%3Csvg xmlns='http:\/\/www.w3.org\/2000\/svg' width='16' height='16' fill='none' stroke='%235a5650' stroke-width='2'%3E%3Cpath d='M4 6l4 4 4-4'\/%3E%3C\/svg%3E\");background-repeat:no-repeat;background-position:right 10px center}.vc-select:focus,.vc-input:focus{outline:none;border-color:var(--vc-accent);box-shadow:0 0 0 3px rgba(200,90,42,.12)}.vc-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;padding-top:18px;border-top:1px solid var(--vc-border-light)}.vc-presets-label{font-family:var(--vc-mono);font-size:11px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--vc-ink-muted);width:100%;margin-bottom:2px}.vc-preset-btn{padding:5px 12px;font-family:var(--vc-font);font-size:12px;font-weight:500;border:1px solid var(--vc-border);border-radius:6px;background:var(--vc-surface-alt);color:var(--vc-ink-secondary);cursor:pointer;transition:all .15s}.vc-preset-btn:hover{border-color:var(--vc-accent);color:var(--vc-accent);background:var(--vc-accent-light)}.vc-results{border-top:1px solid var(--vc-border-light);background:var(--vc-surface-alt);padding:0;max-height:0;overflow:hidden;transition:max-height .5s cubic-bezier(.4,0,.2,1),padding .3s}.vc-results.vc-visible{max-height:2000px;padding:24px}.vc-results-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.vc-results-title{font-family:var(--vc-display);font-size:20px;font-weight:700;color:var(--vc-ink);margin:0}.vc-copy-btn{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border:1px solid var(--vc-border);border-radius:6px;background:var(--vc-surface);font-family:var(--vc-font);font-size:12px;font-weight:500;color:var(--vc-ink-secondary);cursor:pointer;transition:all .15s}.vc-copy-btn:hover{border-color:var(--vc-accent);color:var(--vc-accent)}.vc-result-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}@media(max-width:500px){.vc-result-grid{grid-template-columns:1fr}}.vc-rcard{background:var(--vc-surface);border:1px solid var(--vc-border-light);border-radius:var(--vc-radius);padding:16px;transition:transform .2s}.vc-rcard:hover{transform:translateY(-1px)}.vc-rcard-primary{border-color:var(--vc-accent);border-width:2px;background:linear-gradient(135deg,#fdf6f2,var(--vc-surface));grid-column:1\/-1}.vc-rcard-label{font-family:var(--vc-mono);font-size:10px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--vc-ink-muted);margin-bottom:4px}.vc-rcard-value{font-family:var(--vc-mono);font-size:22px;font-weight:600;color:var(--vc-ink);line-height:1.2}.vc-rcard-primary .vc-rcard-value{font-size:30px;color:var(--vc-accent)}.vc-rcard-unit{font-size:14px;font-weight:400;color:var(--vc-ink-secondary)}.vc-section{margin-top:24px;border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);background:var(--vc-surface);box-shadow:var(--vc-shadow);overflow:hidden}.vc-section-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border:none;background:transparent;cursor:pointer;font-family:var(--vc-font);text-align:left;transition:background .15s}.vc-section-toggle:hover{background:var(--vc-surface-alt)}.vc-section-toggle-text{display:flex;align-items:center;gap:10px}.vc-section-icon{font-size:20px;line-height:1}.vc-section-title{font-family:var(--vc-display);font-size:18px;font-weight:700;color:var(--vc-ink);margin:0}.vc-section-chevron{width:20px;height:20px;color:var(--vc-ink-muted);transition:transform .3s;flex-shrink:0}.vc-section.vc-open .vc-section-chevron{transform:rotate(180deg)}.vc-section-body{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1)}.vc-section.vc-open .vc-section-body{max-height:20000px}.vc-section-inner{padding:0 24px 24px;border-top:1px solid var(--vc-border-light)}.vc-theory h3{font-family:var(--vc-display);font-size:17px;font-weight:700;color:var(--vc-ink);margin:28px 0 10px}.vc-theory h3:first-child{margin-top:20px}.vc-theory p{font-size:14px;color:var(--vc-ink-secondary);margin:0 0 10px}.vc-theory ul{font-size:14px;color:var(--vc-ink-secondary);margin:0 0 12px 18px;padding:0}.vc-theory li{margin-bottom:5px}.vc-formula-box{background:var(--vc-surface-alt);border:2px solid var(--vc-border);border-radius:6px;padding:14px 20px;text-align:center;margin:14px 0;overflow-x:auto}.vc-warning-box{background:var(--vc-yellow-light);border-left:3px solid var(--vc-yellow);padding:14px 16px;border-radius:0 6px 6px 0;margin:14px 0}.vc-example-box{background:var(--vc-surface-alt);border:1px solid var(--vc-border-light);border-radius:6px;padding:16px;margin:14px 0}.vc-example-title{font-family:var(--vc-mono);font-size:13px;font-weight:600;color:var(--vc-accent);margin-bottom:8px}.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)}.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;transition:background .15s}.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}.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)}.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)}.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}@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}<\/style>\n\n<div class=\"vc-calculator\"><header class=\"vc-header\"><p class=\"vc-header-eyebrow\">Free Engineering Tool #248<\/p><h1 class=\"vc-header-title\">Geometry Calculator<\/h1><p class=\"vc-header-subtitle\">Calculate area and volume for common 3D shapes. Select shape and enter dimensions.<\/p><div class=\"vc-badges\"><span class=\"vc-badge\">Area &#038; Volume<\/span><span class=\"vc-badge\">5 Shapes<\/span><span class=\"vc-badge\">Auto-Calc<\/span><\/div><\/header>\n<div class=\"vc-card\"><form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\"><div class=\"vc-form-grid\"><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-shape\">Shape<\/label><select class=\"vc-select\" id=\"vc-shape\"><option value=\"cyl\">Cylinder<\/option><option value=\"cone\">Cone<\/option><option value=\"sphere\">Sphere<\/option><option value=\"torus\">Torus<\/option><option value=\"rect\">Rectangular Prism<\/option><\/select><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-d1\">Dimension 1<\/label><input class=\"vc-input\" type=\"number\" id=\"vc-d1\" step=\"any\" value=\"100\" id=\"vc-d1\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-d2\">Dimension 2<\/label><input class=\"vc-input\" type=\"number\" id=\"vc-d2\" step=\"any\" value=\"200\" id=\"vc-d2\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-d3\">Dimension 3 (if needed)<\/label><input class=\"vc-input\" type=\"number\" id=\"vc-d3\" step=\"any\" value=\"\" id=\"vc-d3\"><\/div><\/div>\n<div class=\"vc-presets\"><div class=\"vc-presets-label\">Quick presets<\/div><button type=\"button\" class=\"vc-preset-btn\" data-s=\"cyl\" data-a=\"100\" data-b=\"200\">Cylinder \u00d8100\u00d7200<\/button><button type=\"button\" class=\"vc-preset-btn\" data-s=\"sphere\" data-a=\"500\" data-b=\"\">Sphere \u00d8500<\/button><button type=\"button\" class=\"vc-preset-btn\" data-s=\"rect\" data-a=\"1000\" data-b=\"500\" data-c=\"300\">Box 1000\u00d7500\u00d7300<\/button><\/div><\/form>\n<div class=\"vc-results\" id=\"vc-results\"><div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Results<\/h2><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><\/div><div class=\"vc-result-grid\"><div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Volume<\/div><div class=\"vc-rcard-value\" id=\"vc-r-vol\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Surface Area<\/div><div class=\"vc-rcard-value\" id=\"vc-r-area\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Shape<\/div><div class=\"vc-rcard-value\" id=\"vc-r-shape\">\u2014<\/div><\/div><\/div><\/div><\/div>\n<div class=\"vc-section vc-open\"><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\">Theory &amp; Formulas<\/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><div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\"><h3>Formulas<\/h3><p><strong>Cylinder:<\/strong> V=\u03c0r\u00b2h, A=2\u03c0r(r+h)<\/p><p><strong>Cone:<\/strong> V=\u03c0r\u00b2h\/3, A=\u03c0r(r+\u221a(r\u00b2+h\u00b2))<\/p><p><strong>Sphere:<\/strong> V=4\u03c0r\u00b3\/3, A=4\u03c0r\u00b2<\/p><p><strong>Torus:<\/strong> V=2\u03c0\u00b2Rr\u00b2, A=4\u03c0\u00b2Rr<\/p><p><strong>Rectangular:<\/strong> V=lwh, A=2(lw+wh+lh)<\/p><\/div><\/div><\/div>\n<div class=\"vc-section\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/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><div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-related\"><a class=\"vc-related-link\" href=\"\/calculators\/universal-unit-converter\/\">Unit Converter<\/a><a class=\"vc-related-link\" href=\"\/calculators\/angle-unit-converter\/\">Angle Converter<\/a><\/div><\/div><\/div><\/div>\n<div class=\"vc-section\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/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><div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-faq-list\"><div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>What units does this use?<\/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\"><p>Enter dimensions in mm. Results are in mm\u00b2 and mm\u00b3. Divide by 10\u2076 for m\u00b2 or 10\u2079 for m\u00b3.<\/p><\/div><\/div><\/div><div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>What is a torus?<\/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\"><p>A donut shape. Defined by major radius R (center to tube center) and minor radius r (tube radius).<\/p><\/div><\/div><\/div><div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>How to calculate for a hollow cylinder?<\/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\"><p>Calculate outer and inner cylinders separately, then subtract inner from outer volume.<\/p><\/div><\/div><\/div><div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>Can I use this for weight?<\/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\"><p>Multiply volume by material density. E.g., steel: 7850 kg\/m\u00b3.<\/p><\/div><\/div><\/div><div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>What about irregular shapes?<\/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\"><p>Break into simple shapes, calculate each, then sum volumes.<\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional instruments for industrial applications.<\/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&ndash;2025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> &mdash; Engineering Calculators<\/p><div class=\"vc-footer-links\"><a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a><a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a><\/div><\/footer><\/div>\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>(function(){var $=function(id){return document.getElementById(id)};function fmt(n){if(isNaN(n))return'\u2014';if(n>1e6)return(n\/1e6).toFixed(2)+' \u00d710\u2076';if(n>1e3)return(n\/1e3).toFixed(2)+' \u00d710\u00b3';return n.toFixed(2)}\nvar labels={cyl:['Diameter (mm)','Height (mm)',''],cone:['Base Diameter (mm)','Height (mm)',''],sphere:['Diameter (mm)','',''],torus:['Major Diameter (mm)','Tube Diameter (mm)',''],rect:['Length (mm)','Width (mm)','Height (mm)']};\nfunction updateLabels(){var s=$('vc-shape').value;var L=labels[s];document.querySelectorAll('.vc-label')[3].textContent=L[0]||'Dim 1';document.querySelectorAll('.vc-label')[4].textContent=L[1]||'Dim 2';document.querySelectorAll('.vc-label')[5].textContent=L[2]||'Dim 3'}\nfunction calculate(){var s=$('vc-shape').value,a=parseFloat($('vc-d1').value),b=parseFloat($('vc-d2').value),c=parseFloat($('vc-d3').value);var V=0,A=0,name='';var pi=Math.PI;if(s==='cyl'&&a&&b){var r=a\/2;V=pi*r*r*b;A=2*pi*r*(r+b);name='Cylinder'}else if(s==='cone'&&a&&b){var r=a\/2;var sl=Math.sqrt(r*r+b*b);V=pi*r*r*b\/3;A=pi*r*(r+sl);name='Cone'}else if(s==='sphere'&&a){var r=a\/2;V=4*pi*r*r*r\/3;A=4*pi*r*r;name='Sphere'}else if(s==='torus'&&a&&b){var R=a\/2,r=b\/2;V=2*pi*pi*R*r*r;A=4*pi*pi*R*r;name='Torus'}else if(s==='rect'&&a&&b&&c){V=a*b*c;A=2*(a*b+b*c+a*c);name='Rectangular Prism'}else{$('vc-results').classList.remove('vc-visible');return}$('vc-r-vol').innerHTML=fmt(V)+' <span class=\"vc-rcard-unit\">mm\u00b3<\/span>';$('vc-r-area').innerHTML=fmt(A)+' <span class=\"vc-rcard-unit\">mm\u00b2<\/span>';$('vc-r-shape').innerHTML=name;$('vc-results').classList.add('vc-visible')}\n$('vc-shape').addEventListener('change',function(){updateLabels();calculate()});\ndocument.querySelectorAll('.vc-preset-btn').forEach(function(btn){btn.addEventListener('click',function(e){e.preventDefault();$('vc-shape').value=this.dataset.s;$('vc-d1').value=this.dataset.a;$('vc-d2').value=this.dataset.b||'';$('vc-d3').value=this.dataset.c||'';updateLabels();calculate()})});\n$('vc-form').addEventListener('input',calculate);$('vc-form').addEventListener('change',calculate);document.querySelectorAll('.vc-section-toggle').forEach(function(b){b.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'))})});document.querySelectorAll('.vc-faq-q').forEach(function(b){b.addEventListener('click',function(){this.closest('.vc-faq-item').classList.toggle('vc-open')})});document.getElementById('vc-copy-btn').addEventListener('click',function(){var r=document.getElementById('vc-results');if(navigator.clipboard)navigator.clipboard.writeText(r.textContent)});updateLabels();calculate()})();<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Beregn areal og volum for sylinder, kjegle, kule, torus og rektangul\u00e6rt prisme.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100118","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100118","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":1,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100118\/revisions"}],"predecessor-version":[{"id":100432,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100118\/revisions\/100432"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=100118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=100118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=100118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}