{"id":55906,"date":"2015-10-24T15:50:57","date_gmt":"2015-10-24T13:50:57","guid":{"rendered":"http:\/\/wpcalc.com\/?p=55906"},"modified":"2026-09-28T09:49:25","modified_gmt":"2026-09-28T06:49:25","slug":"weight-and-mass","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/converters\/weight-and-mass\/","title":{"rendered":"Weight \/ Mass 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 Weight or Mass Between All Units<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"55906\" data-favorite-title=\"Weight \/ Mass\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/converters\/weight-and-mass\/\" data-favorite-excerpt=\"Convert a mass value between grams, kilograms, pounds, ounces, tons, and other units. Enter the value, then choose the From Unit and To Unit.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-units\">\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\/weight-and-mass\/\" method=\"POST\" class=\"calculator\" id=\"calculator-55906\" data-post=\"55906\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field is-single\" id=\"input-1\"><label for=\"field-1\">Weight\/Mass Value<\/label><input type=\"text\" name=\"weightmass_value\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"100\"\/><small id=\"calc-info-1\">Enter the weight or mass value to convert<\/small><\/div><div class=\"field\" id=\"input-2\"><label for=\"field-2\">From Unit<\/label><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"from_unit\"><option value=\"centigram\">Centigram<\/option><option value=\"decigram\">Decigram<\/option><option value=\"dekagram\">Dekagram<\/option><option value=\"dram\">Dram<\/option><option value=\"grain\">Grain<\/option><option value=\"gram\">Gram<\/option><option value=\"hectogram\">Hectogram<\/option><option value=\"cwt_uk\">Hundredweight (UK)<\/option><option value=\"cwt_us\">Hundredweight (US)<\/option><option value=\"kilogram\">Kilogram<\/option><option value=\"lb\">Pound (lb)<\/option><option value=\"long_ton\">Long Ton<\/option><option value=\"megagram\">Megagram<\/option><option value=\"metric_ton\">Metric Ton<\/option><option value=\"microgram\">Microgram<\/option><option value=\"milligram\">Milligram<\/option><option value=\"ounce\">Ounce<\/option><option value=\"pound\">Pound<\/option><option value=\"short_ton\">Short Ton<\/option><option value=\"ton_uk\">Ton (UK)<\/option><option value=\"ton_metric\">Ton (Metric)<\/option><option value=\"ton_us\">Ton (US)<\/option><option value=\"tonne\">Tonne<\/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><div class=\"field\" id=\"input-3\"><label for=\"field-3\">To Unit<\/label><div class=\"grid grid-cols-1\"><select id=\"field-3\" name=\"to_unit\"><option value=\"centigram\">Centigram<\/option><option value=\"decigram\">Decigram<\/option><option value=\"dekagram\">Dekagram<\/option><option value=\"dram\">Dram<\/option><option value=\"grain\">Grain<\/option><option value=\"gram\">Gram<\/option><option value=\"hectogram\">Hectogram<\/option><option value=\"cwt_uk\">Hundredweight (UK)<\/option><option value=\"cwt_us\">Hundredweight (US)<\/option><option value=\"kilogram\">Kilogram<\/option><option value=\"lb\">Pound (lb)<\/option><option value=\"long_ton\">Long Ton<\/option><option value=\"megagram\">Megagram<\/option><option value=\"metric_ton\">Metric Ton<\/option><option value=\"microgram\">Microgram<\/option><option value=\"milligram\">Milligram<\/option><option value=\"ounce\">Ounce<\/option><option value=\"pound\">Pound<\/option><option value=\"short_ton\">Short Ton<\/option><option value=\"ton_uk\">Ton (UK)<\/option><option value=\"ton_metric\">Ton (Metric)<\/option><option value=\"ton_us\">Ton (US)<\/option><option value=\"tonne\">Tonne<\/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><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"55906\">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> Your Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Converted Value<\/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=\"55906\" 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>Weight\/Mass Conversion 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\\[ V_{\\mathrm{to}}=V_{\\mathrm{from}}\\times\\frac{F_{\\mathrm{from}}}{F_{\\mathrm{to}}} \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(V_{\\mathrm{from}}\\) \u2014 the number entered in Weight\/Mass Value<\/li>\n<li>\\(V_{\\mathrm{to}}\\) \u2014 the Converted Value<\/li>\n<li>\\(F_{\\mathrm{from}}\\) \u2014 grams per From Unit<\/li>\n<li>\\(F_{\\mathrm{to}}\\) \u2014 grams per To Unit<\/li>\n<\/ul>\n<p>The converter first expresses the entered mass in grams, then divides by the number of grams in one target unit. Using the same reference unit for both factors makes it possible to convert directly between any two units in the menus.<\/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>Weight\/Mass \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> enter 100 for Weight\/Mass Value, select Gram as the From Unit, and select Kilogram as the To Unit.<\/p>\n<p>One gram is 1 gram, and one kilogram is 1,000 grams, so:<\/p>\n<p>\\[100\\times\\frac{1}{1000}=0.1\\]<\/p>\n<p><strong>Result:<\/strong> 100 grams = 0.1 kilograms.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Enter a nonnegative number in <strong>Weight\/Mass Value<\/strong>. Decimals are accepted.<\/li>\n<li>Choose the unit of that number from <strong>From Unit<\/strong>.<\/li>\n<li>Choose the unit you need from <strong>To Unit<\/strong>.<\/li>\n<li>Read the <strong>Converted Value<\/strong> in your selected To Unit. To reverse the conversion, exchange the two unit selections.<\/li>\n<\/ol>\n<p>The initial settings are 100, Gram, and Kilogram, producing 0.1. The result is for one selected target unit at a time; it is not a list of conversions into every available unit.<\/p>\n<h2>Understanding weight and mass conversions<\/h2>\n<p>Mass describes how much matter an object contains. In everyday use, people also say \u201cweight\u201d when giving a value in grams, kilograms, or pounds. This converter follows that common usage: it converts between mass units, not between mass and a force such as newtons. An object's mass stays the same in different gravitational fields, while its weight as a force changes.<\/p>\n<p>Conversion changes the unit and the numerical value, but not the quantity represented. For example, 1 kilogram and 1,000 grams describe the same mass. When converting to a smaller unit, the number usually grows; when converting to a larger unit, it usually shrinks. This distinction helps when checking a result: 100 grams should be less than 1 kilogram, so its kilogram value must be less than 1.<\/p>\n<p>Some unit names need particular care. A US hundredweight is 100 pounds, while a UK hundredweight is 112 pounds. A US short ton is 2,000 pounds, and a UK long ton is 2,240 pounds. A metric ton, also called a tonne, is 1,000 kilograms. Choosing the correct regional definition matters much more than adding extra decimal places to a result.<\/p>\n<h2>Selected unit factors<\/h2>\n<p>These are the grams-per-unit factors used in the conversion formula. They can help you check a calculation or distinguish similarly named units.<\/p>\n<table>\n<thead>\n<tr>\n<th>Unit<\/th>\n<th>Grams per unit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Grain<\/td>\n<td>0.06479891<\/td>\n<\/tr>\n<tr>\n<td>Dram<\/td>\n<td>1.7718451953125<\/td>\n<\/tr>\n<tr>\n<td>Ounce<\/td>\n<td>28.349523125<\/td>\n<\/tr>\n<tr>\n<td>Pound<\/td>\n<td>453.59237<\/td>\n<\/tr>\n<tr>\n<td>Kilogram<\/td>\n<td>1,000<\/td>\n<\/tr>\n<tr>\n<td>Hundredweight (US)<\/td>\n<td>45,359.237<\/td>\n<\/tr>\n<tr>\n<td>Hundredweight (UK)<\/td>\n<td>50,802.34544<\/td>\n<\/tr>\n<tr>\n<td>Short Ton<\/td>\n<td>907,184.74<\/td>\n<\/tr>\n<tr>\n<td>Long Ton<\/td>\n<td>1,016,046.9088<\/td>\n<\/tr>\n<tr>\n<td>Metric Ton<\/td>\n<td>1,000,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Assumptions and practical tips<\/h2>\n<p>The calculator accepts zero and positive values. It rounds the displayed Converted Value to six decimal places. If you convert a tiny quantity into a much larger unit, the displayed result may therefore be zero even though the unrounded quantity is not. For very small masses, choosing micrograms or milligrams as the To Unit can make the result easier to read.<\/p>\n<p>The menus include several names for identical factors: Pound and Pound (lb) both use 453.59237 grams; Long Ton and Ton (UK) match; Short Ton and Ton (US) match; and Metric Ton, Ton (Metric), Tonne, and Megagram each equal 1,000,000 grams. These labels do not indicate different conversion rates. Stone is not an available unit.<\/p>\n<p>For metric units beyond those shown here, the <a href=\"https:\/\/wpcalc.com\/en\/converters\/metric-prefix\/\">Metric Prefix calculator<\/a> can help clarify powers of ten. If you know a volume of water and need to estimate its mass instead, use the <a href=\"https:\/\/wpcalc.com\/en\/converters\/water-weight\/\">Water Weight calculator<\/a>; a unit conversion alone cannot determine mass from volume.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Convert a mass value between grams, kilograms, pounds, ounces, tons, and other units. Enter the value, then choose the From Unit and To Unit.<\/p>\n","protected":false},"author":70,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[13],"class_list":["post-55906","post","type-post","status-publish","format-standard","hentry","category-converters","tag-basic-units"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55906","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\/70"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=55906"}],"version-history":[{"count":2,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55906\/revisions"}],"predecessor-version":[{"id":65323,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55906\/revisions\/65323"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=55906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=55906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=55906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}