{"id":57237,"date":"2015-12-28T16:47:37","date_gmt":"2015-05-12T07:00:17","guid":{"rendered":"http:\/\/wpcalc.com\/?p=57237"},"modified":"2026-09-27T16:48:28","modified_gmt":"2026-09-27T13:48:28","slug":"body-mass-for-women","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/beauty\/body-mass-for-women\/","title":{"rendered":"Body Mass for Women"},"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\">7-Point Skinfold Calculator for Women<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"57237\" data-favorite-title=\"Body Mass for Women\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/beauty\/body-mass-for-women\/\" data-favorite-excerpt=\"Estimate body fat percentage and lean body mass from your age, weight, and seven skinfold measurements taken with calipers.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-appearance\">\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\/beauty\/body-mass-for-women\/\" method=\"POST\" class=\"calculator\" id=\"calculator-57237\" data-post=\"57237\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Age<\/label><div class=\"term\">A<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"age\" id=\"field-1\" aria-describedby=\"calc-unit-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"10\" value=\"30\"\/><div class=\"unit\" id=\"calc-unit-1\">years<\/div><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">Weight<\/label><div class=\"term\">W<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"weight\" id=\"field-2\" aria-describedby=\"calc-unit-2\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"60\"\/><div class=\"unit\" id=\"calc-unit-2\">kg<\/div><\/div><div class=\"field has-term\" id=\"input-3\"><label for=\"field-3\">Triceps fold<\/label><div class=\"term\">Tr<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"triceps_fold\" id=\"field-3\" aria-describedby=\"calc-unit-3\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"15\"\/><div class=\"unit\" id=\"calc-unit-3\">mm<\/div><\/div><div class=\"field has-term\" id=\"input-4\"><label for=\"field-4\">Suprailiac fold<\/label><div class=\"term\">Si<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"suprailiac_fold\" id=\"field-4\" aria-describedby=\"calc-unit-4\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"20\"\/><div class=\"unit\" id=\"calc-unit-4\">mm<\/div><\/div><div class=\"field has-term\" id=\"input-5\"><label for=\"field-5\">Thigh fold<\/label><div class=\"term\">Th<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"thigh_fold\" id=\"field-5\" aria-describedby=\"calc-unit-5\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"25\"\/><div class=\"unit\" id=\"calc-unit-5\">mm<\/div><\/div><div class=\"field has-term\" id=\"input-6\"><label for=\"field-6\">Pectoral fold<\/label><div class=\"term\">P<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"pectoral_fold\" id=\"field-6\" aria-describedby=\"calc-unit-6\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"18\"\/><div class=\"unit\" id=\"calc-unit-6\">mm<\/div><\/div><div class=\"field has-term\" id=\"input-7\"><label for=\"field-7\">Abdominal fold<\/label><div class=\"term\">Ab<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"abdominal_fold\" id=\"field-7\" aria-describedby=\"calc-unit-7\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"22\"\/><div class=\"unit\" id=\"calc-unit-7\">mm<\/div><\/div><div class=\"field has-term\" id=\"input-8\"><label for=\"field-8\">Subscapular fold<\/label><div class=\"term\">Sb<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"subscapular_fold\" id=\"field-8\" aria-describedby=\"calc-unit-8\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"19\"\/><div class=\"unit\" id=\"calc-unit-8\">mm<\/div><\/div><div class=\"field has-term\" id=\"input-9\"><label for=\"field-9\">Axilla fold<\/label><div class=\"term\">Ax<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"axilla_fold\" id=\"field-9\" aria-describedby=\"calc-unit-9\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"16\"\/><div class=\"unit\" id=\"calc-unit-9\">mm<\/div><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"57237\">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>Body fat<\/span><span class=\"result-term\">BF<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"%\"><\/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 class=\"field-result\" id=\"output-2\"><span class=\"field-title\"><span>Lean body mass<\/span><span class=\"result-term\">LBM<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"kg\"><\/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=\"57237\" 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>Body Mass for Women 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\\begin{aligned}\nS &amp;= Tr+Si+Th+P+Ab+Sb+Ax \\\\\nD &amp;= 1.097-0.00046971S+0.00000056S^2-0.00012828A \\\\\nBF &amp;= \\frac{495}{D}-450 \\\\\nLBM &amp;= W\\left(1-\\frac{BF}{100}\\right)\n\\end{aligned}\n\\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(S\\) \u2014 sum of the seven skinfold measurements (mm)<\/li>\n<li>\\(Tr, Si, Th, P, Ab, Sb, Ax\\) \u2014 triceps, suprailiac, thigh, pectoral, abdominal, subscapular, and axilla folds (mm)<\/li>\n<li>\\(A\\) \u2014 age (years)<\/li>\n<li>\\(D\\) \u2014 estimated body density (g\/cm\u00b3)<\/li>\n<li>\\(BF\\) \u2014 estimated body fat (%)<\/li>\n<li>\\(W\\) \u2014 body weight (kg)<\/li>\n<li>\\(LBM\\) \u2014 estimated lean body mass (kg)<\/li>\n<\/ul>\n<p>The women\u2019s Jackson\u2013Pollock seven-site equation estimates body density from age and skinfolds. The calculator converts density to body fat percentage using the Siri equation, then uses weight to estimate lean body mass.<\/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>Body Mass for Women \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> A 30-year-old woman weighs 60 kg. Her triceps, suprailiac, thigh, pectoral, abdominal, subscapular, and axilla measurements are 15, 20, 25, 18, 22, 19, and 16 mm, respectively.<\/p>\n<p>\\[S=15+20+25+18+22+19+16=135\\text{ mm}\\]<\/p>\n<p>\\[D=1.097-0.00046971(135)+0.00000056(135)^2-0.00012828(30)=1.03994675\\text{ g\/cm}^3\\]<\/p>\n<p>\\[BF=\\frac{495}{1.03994675}-450\\approx25.99\\%\\]<\/p>\n<p>\\[LBM=60\\left(1-\\frac{25.9859}{100}\\right)\\approx44.41\\text{ kg}\\]<\/p>\n<p><strong>Result:<\/strong> Estimated body fat is 25.99%, and estimated lean body mass is 44.41 kg.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Enter your <strong>Age<\/strong> in years and <strong>Weight<\/strong> in kilograms.<\/li>\n<li>Use skinfold calipers to measure your <strong>Triceps fold<\/strong>, <strong>Suprailiac fold<\/strong>, and <strong>Thigh fold<\/strong>. Enter each reading in millimeters.<\/li>\n<li>Enter the <strong>Pectoral fold<\/strong>, <strong>Abdominal fold<\/strong>, <strong>Subscapular fold<\/strong>, and <strong>Axilla fold<\/strong>, also in millimeters. Follow a consistent seven-site measurement protocol for all sites.<\/li>\n<li>Read the estimated <strong>Body fat<\/strong> percentage and <strong>Lean body mass<\/strong> in kilograms. Check that no measurement was entered in centimeters by mistake.<\/li>\n<\/ol>\n<h2>What the results mean<\/h2>\n<p>Body fat percentage estimates the share of your total weight that is fat mass. Lean body mass is everything else, including muscle, bone, organs, blood, and water. It is not a measurement of muscle mass alone. For example, the default inputs produce an estimated 25.99% body fat and 44.41 kg of lean body mass at a weight of 60 kg.<\/p>\n<p>Skinfold calipers measure the thickness of a pinched layer of skin and subcutaneous fat at selected sites. The seven readings are added together; the equation uses that sum and your age to estimate overall body density. This is an indirect estimate: it does not measure all body fat or directly determine the composition of internal tissues.<\/p>\n<p>A single percentage is best interpreted alongside measurement quality, changes over time, and your broader health context. There is no universal body fat target that suits every woman or every stage of life. For another way to track body size, a <a href=\"https:\/\/wpcalc.com\/en\/beauty\/waist-to-height-ratio\/\">waist-to-height ratio calculator<\/a> uses waist circumference rather than calipers, but it answers a different question.<\/p>\n<h2>Measurement tips and limitations<\/h2>\n<p>Use a suitable caliper and a consistent site guide. Identify the same landmarks each time, take measurements on the same side of the body, and record the fold thickness in millimeters. Taking repeated readings at each site can help reveal an inconsistent pinch or misplaced caliper. If possible, have the same trained person perform each assessment.<\/p>\n<p>Skinfold results can vary with the measurer, caliper, site selection, and individual fat distribution. Very large or hard-to-grasp folds may be particularly difficult to measure consistently. The density-to-fat conversion also relies on assumptions about the density of fat and fat-free tissue; these assumptions may not fit everyone equally well. Treat the output as an estimate, not a diagnosis or a precise reading of your body composition.<\/p>\n<p>For progress tracking, compare measurements made under similar conditions using the same method. A small change may reflect measurement variation rather than a real change in body fat. If seven sites are impractical, the <a href=\"https:\/\/wpcalc.com\/en\/beauty\/3-point-skin-fold-bodyfat\/\">3-point body fat calculator<\/a> uses fewer skinfold readings, though results from different methods should not be treated as interchangeable. If you use the lean body mass estimate in a <a href=\"https:\/\/wpcalc.com\/en\/beauty\/katch-mcardle-bmr\/\">Katch\u2013McArdle BMR calculator<\/a>, remember that uncertainty in the skinfold estimate carries through to the calorie estimate.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Estimate body fat percentage and lean body mass from your age, weight, and seven skinfold measurements taken with calipers.<\/p>\n","protected":false},"author":70,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[12],"class_list":["post-57237","post","type-post","status-publish","format-standard","hentry","category-beauty","tag-appearance"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/57237","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=57237"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/57237\/revisions"}],"predecessor-version":[{"id":65198,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/57237\/revisions\/65198"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=57237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=57237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=57237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}