{"id":65427,"date":"2026-09-28T19:12:39","date_gmt":"2026-09-28T16:12:39","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=65427"},"modified":"2026-09-29T15:19:12","modified_gmt":"2026-09-29T12:19:12","slug":"density-units-converter","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/converters\/density-units-converter\/","title":{"rendered":"Density Units Converter"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Convert Density Units<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"65427\" data-favorite-title=\"Density Converter\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/converters\/density-units-converter\/\" data-favorite-excerpt=\"Convert density values between kg\/m\u00b3, g\/cm\u00b3, g\/mL, lb\/ft\u00b3, lb\/in\u00b3 and more. Enter a value, pick a unit, and get the equivalent density in all common units at once.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-physic\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/en\/converters\/density-units-converter\/\" method=\"POST\" class=\"calculator\" id=\"calculator-65427\" data-post=\"65427\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field is-single\" id=\"input-1\"><label for=\"field-1\">Density value<\/label><div class=\"field-group\"><input type=\"text\" name=\"density_value\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"1\"\/><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"unit\" aria-label=\"Unit\"><option value=\"kg\/m3\">kg\/m\u00b3<\/option><option value=\"g\/cm3\" selected>g\/cm\u00b3<\/option><option value=\"g\/mL\">g\/mL<\/option><option value=\"lb\/ft3\">lb\/ft\u00b3<\/option><option value=\"lb\/in3\">lb\/in\u00b3<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><small id=\"calc-info-1\">Default 1 g\/cm\u00b3 is the density of water at 4 \u00b0C.<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"65427\">Calculate<\/button><button type=\"reset\">Reset<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculate automatically<\/label><small>If enabled, the result will update automatically when you change any value.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Converted Densities<\/h3><div class=\"result-box\"><div class=\"field-result is-column\" id=\"output-1\"><span class=\"field-title\"><span>Equivalent densities in all common units<\/span><\/span><span class=\"field-value\" id=\"result-1\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copy link to this calculation<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Leave a Comment<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"65427\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">How did this result make you feel?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Like <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Helpful <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confused <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Disappointed <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Inaccurate <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>Density Converter Formula<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[\n\\rho_{\\text{kg\/m}^3} = \\rho_{\\text{input}} \\times f_{\\text{input}}, \\qquad \\rho_{\\text{target}} = \\frac{\\rho_{\\text{kg\/m}^3}}{f_{\\text{target}}}\n\\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(\\rho_{\\text{input}}\\) \u2014 the density value you entered<\/li>\n<li>\\(f_{\\text{input}}\\) \u2014 factor that converts the input unit to kg\/m\u00b3 (see table below)<\/li>\n<li>\\(f_{\\text{target}}\\) \u2014 factor that converts the target unit to kg\/m\u00b3<\/li>\n<li>\\(\\rho_{\\text{target}}\\) \u2014 the same density expressed in the target unit<\/li>\n<\/ul>\n<p>Every unit is first converted to kilograms per cubic meter (the SI base unit for density), then divided by the target unit's factor. This two-step method guarantees consistent results for any pair of units.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-459\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>Density Converter \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> convert 1 g\/cm\u00b3 \u2014 the density of water at 4 \u00b0C \u2014 into all other units.<\/p>\n<p>\\[<br \/>\n\\rho = 1 \\ \\text{g\/cm}^3 \\times 1000 = 1000 \\ \\text{kg\/m}^3<br \/>\n\\]<\/p>\n<p>\\[<br \/>\n1000 \\div 1000 = 1 \\ \\text{g\/mL}, \\quad 1000 \\div 16.018463 = 62.427961 \\ \\text{lb\/ft}^3, \\quad 1000 \\div 27679.905 = 0.036127 \\ \\text{lb\/in}^3<br \/>\n\\]<\/p>\n<p><strong>Result:<\/strong> 1 g\/cm\u00b3 = 1000 kg\/m\u00b3 = 1 kg\/L = 1 g\/mL = 1000 g\/L = 62.427961 lb\/ft\u00b3 = 0.036127 lb\/in\u00b3 = 0.578037 oz\/in\u00b3 = 8.345404 lb\/gal (US).<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Density Converter<\/h2>\n<ol>\n<li>Type your value into the <strong>Density value<\/strong> field (it must be zero or positive).<\/li>\n<li>Choose the unit of that value from the <strong>Unit<\/strong> dropdown: kg\/m\u00b3, g\/cm\u00b3, g\/mL, lb\/ft\u00b3 or lb\/in\u00b3.<\/li>\n<li>Read the results table: it shows your density converted into every other common unit \u2014 kg\/m\u00b3, g\/cm\u00b3, g\/mL, g\/L, kg\/L, lb\/ft\u00b3, lb\/in\u00b3, oz\/in\u00b3 and lb\/gal (US).<\/li>\n<\/ol>\n<h2>What Is Density?<\/h2>\n<p>Density is the amount of mass packed into a given volume, defined as \\( \\rho = m \/ V \\). It tells you how heavy a fixed amount of a substance is: a cubic centimeter of lead (about 11.34 g\/cm\u00b3) weighs far more than a cubic centimeter of water (1 g\/cm\u00b3). Density is a key property in physics, chemistry, engineering, geology and quality control, because it identifies substances, predicts whether objects float or sink, and links mass to volume in design calculations.<\/p>\n<p>Density values appear in many unit systems, which is why conversion matters. Scientific work uses SI units (kg\/m\u00b3), laboratories and medicine often report g\/mL or g\/L, while US engineering frequently uses lb\/ft\u00b3, lb\/in\u00b3 or lb\/gal. The metric units are related exactly: 1 g\/cm\u00b3 = 1 g\/mL = 1 kg\/L = 1000 kg\/m\u00b3, since 1 mL = 1 cm\u00b3 and 1 L = 0.001 m\u00b3. Imperial units are less round: 1 lb\/ft\u00b3 \u2248 16.018463 kg\/m\u00b3 and 1 lb\/in\u00b3 \u2248 27679.905 kg\/m\u00b3, so a quick mental conversion is rarely accurate enough.<\/p>\n<p>When interpreting results, remember that density depends on temperature and pressure. Gases expand when heated, lowering their density, and even liquids and solids change slightly. Water reaches its maximum density of about 999.97 kg\/m\u00b3 at 4 \u00b0C, which is the value behind the familiar \"1 g\/cm\u00b3\" figure. If your source data was measured at a different temperature, expect small deviations.<\/p>\n<h2>Conversion Factors and Reference Values<\/h2>\n<p>The table below lists the factors the calculator uses internally. To convert a value from one unit to another, multiply by the source factor and divide by the target factor.<\/p>\n<table>\n<thead>\n<tr>\n<th>Unit<\/th>\n<th>Factor to kg\/m\u00b3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>kg\/m\u00b3<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>g\/cm\u00b3<\/td>\n<td>1000 (exact)<\/td>\n<\/tr>\n<tr>\n<td>g\/mL<\/td>\n<td>1000 (exact)<\/td>\n<\/tr>\n<tr>\n<td>g\/L<\/td>\n<td>1 (exact)<\/td>\n<\/tr>\n<tr>\n<td>kg\/L<\/td>\n<td>1000 (exact)<\/td>\n<\/tr>\n<tr>\n<td>lb\/ft\u00b3<\/td>\n<td>16.018463<\/td>\n<\/tr>\n<tr>\n<td>lb\/in\u00b3<\/td>\n<td>27679.905<\/td>\n<\/tr>\n<tr>\n<td>oz\/in\u00b3<\/td>\n<td>1729.994<\/td>\n<\/tr>\n<tr>\n<td>lb\/gal (US)<\/td>\n<td>119.826427<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Some densities worth remembering: air at sea level \u2248 1.225 kg\/m\u00b3, water \u2248 1000 kg\/m\u00b3, steel \u2248 7850 kg\/m\u00b3, gold \u2248 19.32 g\/cm\u00b3.<\/p>\n<h2>Notes and Limitations<\/h2>\n<ul>\n<li>The calculator converts units only \u2014 it does not compute density from mass and volume. For that, divide mass by volume first, or use a dedicated mass\/volume calculation.<\/li>\n<li>Results are rounded to 6 decimal places. For most engineering and scientific purposes this is more than sufficient; for extreme values (very large or very small), scientific notation may be more convenient.<\/li>\n<li>The pound- and gallon-based units use US definitions (1 lb = 0.45359237 kg, 1 US gallon = 3.785411784 L). Imperial (UK) gallons are not included.<\/li>\n<li>Density is assumed constant, i.e. the calculator does not adjust for temperature or pressure. Values measured under different conditions may differ slightly.<\/li>\n<li>The source unit you select is omitted from the results table to avoid a redundant row.<\/li>\n<\/ul>\n<p>If you also work with related physical quantities, you may find our <a href=\"https:\/\/wpcalc.com\/en\/converters\/mass-flux-density\/\">Mass Flux Density Converter<\/a>, <a href=\"https:\/\/wpcalc.com\/en\/converters\/pressure\/\">Pressure Converter<\/a> or <a href=\"https:\/\/wpcalc.com\/en\/converters\/speed-units-converter\/\">Speed Converter<\/a> useful for keeping every part of a calculation in consistent units.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Convert density values between kg\/m\u00b3, g\/cm\u00b3, g\/mL, lb\/ft\u00b3, lb\/in\u00b3 and more. Enter a value, pick a unit, and get the equivalent density in all common units at once.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[34],"class_list":["post-65427","post","type-post","status-publish","format-standard","hentry","category-converters","tag-physics-units"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/65427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/users\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=65427"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/65427\/revisions"}],"predecessor-version":[{"id":65687,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/65427\/revisions\/65687"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=65427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=65427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=65427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}