{"id":66454,"date":"2026-10-06T10:59:19","date_gmt":"2026-10-06T07:59:19","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=66454"},"modified":"2026-10-06T10:59:19","modified_gmt":"2026-10-06T07:59:19","slug":"fetal-weight-estimate-calculator","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/pregnancy-baby\/fetal-weight-estimate-calculator\/","title":{"rendered":"Fetal Weight Estimate Calculator"},"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\">Estimate Fetal Weight from Ultrasound Measurements<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"66454\" data-favorite-title=\"Fetal Weight Estimate\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/fetal-weight-estimate-calculator\/\" data-favorite-excerpt=\"Estimate fetal weight from three routine ultrasound measurements \u2014 head circumference, abdominal circumference and femur length \u2014 using the Hadlock formula. Enter values in mm or cm and get the result in grams, kilograms and pounds.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-children\">\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\/pregnancy-baby\/fetal-weight-estimate-calculator\/\" method=\"POST\" class=\"calculator\" id=\"calculator-66454\" data-post=\"66454\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field\" id=\"input-1\"><label for=\"field-1\">Head circumference (HC)<\/label><div class=\"field-group\"><input type=\"text\" name=\"head_circumference_hc\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"320\"\/><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"unit\" aria-label=\"Unit\"><option value=\"mm\" selected>mm<\/option><option value=\"cm\">cm<\/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\">Circumference of the fetal head measured by ultrasound.<\/small><\/div><div class=\"field\" id=\"input-2\"><label for=\"field-3\">Abdominal circumference (AC)<\/label><div class=\"field-group\"><input type=\"text\" name=\"abdominal_circumference_ac\" id=\"field-3\" aria-describedby=\"calc-info-3\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"300\"\/><div class=\"grid grid-cols-1\"><select id=\"field-4\" name=\"unit\" aria-label=\"Unit\"><option value=\"mm\" selected>mm<\/option><option value=\"cm\">cm<\/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-3\">Circumference of the fetal abdomen measured by ultrasound.<\/small><\/div><div class=\"field\" id=\"input-3\"><label for=\"field-5\">Femur length (FL)<\/label><div class=\"field-group\"><input type=\"text\" name=\"femur_length_fl\" id=\"field-5\" aria-describedby=\"calc-info-5\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"65\"\/><div class=\"grid grid-cols-1\"><select id=\"field-6\" name=\"unit\" aria-label=\"Unit\"><option value=\"mm\" selected>mm<\/option><option value=\"cm\">cm<\/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-5\">Length of the fetal thigh bone measured by ultrasound.<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"66454\">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> Estimated Fetal Weight<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Estimated fetal weight<\/span><span class=\"result-term\">EFW<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"g\"><\/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>In kilograms<\/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 class=\"field-result\" id=\"output-3\"><span class=\"field-title\"><span>In pounds<\/span><\/span><span class=\"field-value\" id=\"result-3\" data-unit=\"lb\"><\/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 is-column\" id=\"output-4\"><span class=\"field-title\"><span>Calculation and limitations<\/span><\/span><span class=\"field-value\" id=\"result-4\"><\/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=\"66454\" 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>Fetal Weight Estimate 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\\[ \\log_{10}(EFW) = 1.326 - 0.00326 \\cdot AC \\cdot FL + 0.0107 \\cdot HC + 0.0438 \\cdot AC + 0.158 \\cdot FL \\]<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(EFW\\) \u2014 estimated fetal weight, in grams (g)<\/li>\n<li>\\(HC\\) \u2014 head circumference, in centimeters (cm)<\/li>\n<li>\\(AC\\) \u2014 abdominal circumference, in centimeters (cm)<\/li>\n<li>\\(FL\\) \u2014 femur length, in centimeters (cm)<\/li>\n<\/ul>\n<p>This is the Hadlock equation based on three parameters (HC, AC and FL). It expresses the estimated weight as a power of 10, which means the weight itself is found by calculating \\( EFW = 10^{\\log_{10}(EFW)} \\). All measurements must be in centimeters before the formula is applied.<\/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>Fetal Weight Estimate \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> a third-trimester ultrasound reports a head circumference of 320 mm, an abdominal circumference of 300 mm and a femur length of 65 mm. These are the calculator's default values, so you can reproduce the result directly.<\/p>\n<p>Convert the measurements to centimeters: \\( HC = 32 \\text{ cm}, \\; AC = 30 \\text{ cm}, \\; FL = 6.5 \\text{ cm} \\).<\/p>\n<p>\\[ \\log_{10}(EFW) = 1.326 - 0.00326 \\times 30 \\times 6.5 + 0.0107 \\times 32 + 0.0438 \\times 30 + 0.158 \\times 6.5 = 3.3737 \\]<\/p>\n<p>\\[ EFW = 10^{3.3737} \\approx 2365 \\text{ g} \\]<\/p>\n<p><strong>Result:<\/strong> the estimated fetal weight is approximately 2365 g, which is about 2.37 kg or 5.21 lb.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Calculator<\/h2>\n<ol>\n<li>Enter the <strong>Head circumference (HC)<\/strong> from your ultrasound report and select whether the value is in mm or cm.<\/li>\n<li>Enter the <strong>Abdominal circumference (AC)<\/strong> and choose its unit (mm or cm).<\/li>\n<li>Enter the <strong>Femur length (FL)<\/strong> and choose its unit (mm or cm).<\/li>\n<li>Read the <strong>Estimated fetal weight<\/strong> in grams, together with the same result converted to kilograms and pounds. The panel also shows the measurements used and a note on the limitations of ultrasound estimates.<\/li>\n<\/ol>\n<p>Ultrasound reports usually state measurements in millimeters, which is why mm is the default unit. If your report gives values in centimeters, simply switch the unit selector \u2014 no manual conversion is needed.<\/p>\n<h2>What Is Estimated Fetal Weight?<\/h2>\n<p>Estimated fetal weight (EFW) is the predicted weight of a baby before birth, calculated from measurements taken during an ultrasound. It is one of the most closely watched numbers in the third trimester because it shows whether the baby is growing along a healthy curve for its gestational age. An estimate that is too small may indicate fetal growth restriction, while an estimate that is too large may suggest macrosomia, which can affect plans for delivery.<\/p>\n<p>The calculator uses the Hadlock formula, published in 1985 and still one of the most widely used equations worldwide. Hadlock and colleagues derived it from ultrasound data of large groups of fetuses, using head circumference, abdominal circumference and femur length. There are several Hadlock variants (two, three, four or five parameters); this one uses three parameters, which keeps the input simple while remaining accurate enough for everyday use.<\/p>\n<p>Because the formula is based on population averages, the result is a statistical estimate, not a measurement. If a baby is actually 2500 g, the estimate might reasonably fall anywhere from roughly 2250 g to 2750 g. Clinicians therefore interpret the EFW together with gestational age, growth trends across repeated scans, amniotic fluid levels and the mother's clinical picture \u2014 never in isolation. You can pair this calculator with our <a href=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/gestational-age\/\">gestational age calculator<\/a> to see where the weight falls for the baby's age, and with the <a href=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/amniotic-fluid-index-calculator\/\">amniotic fluid index calculator<\/a> to check another key growth indicator.<\/p>\n<h2>Interpreting the Result<\/h2>\n<p>A single EFW number means little on its own; what matters most is the percentile for gestational age. As a general reference, below the 10th percentile raises concern about fetal growth restriction, and above the 90th percentile suggests the baby may be larger than average. Only your maternity care team can place the estimate on the correct growth chart and decide whether follow-up is needed.<\/p>\n<p>Trends are more informative than single values. If growth was normal at 28 weeks and has slowed by 36 weeks, that pattern matters more than one absolute number, even if both readings are technically within normal limits. This is also why estimating fetal weight earlier in pregnancy is less useful \u2014 small measurement errors translate into proportionally larger weight errors as the pregnancy advances.<\/p>\n<h2>Assumptions and Limitations<\/h2>\n<ul>\n<li><strong>Measurement accuracy dominates the result.<\/strong> Because the formula combines several measurements, small errors in each one compound. Studies show ultrasound EFW is typically within about 10\u201315% of the actual birth weight, but individual cases can deviate more.<\/li>\n<li><strong>The formula assumes a typical fetal body shape.<\/strong> It was derived from population data and does not account for individual differences in body composition, which is a known source of error in babies of diabetic mothers and babies at the extremes of growth.<\/li>\n<li><strong>Later estimates are less precise.<\/strong> In the last weeks of pregnancy the baby fills the pelvis, deeper parts of the abdomen become harder to image, and error margins grow.<\/li>\n<li><strong>Enter measurements, not estimates.<\/strong> Use the raw HC, AC and FL values from your report. Do not enter an estimated weight, percentile or gestational age into the measurement fields.<\/li>\n<li><strong>Sanity checks are built in.<\/strong> The calculator rejects values above 50 cm for head and abdominal circumference and above 12 cm for femur length, which helps catch unit mix-ups (for example, entering millimeters while cm is selected).<\/li>\n<\/ul>\n<h2>Practical Tips<\/h2>\n<p>If your report lists both millimeter and centimeter values for the same measurement, they should agree (e.g. 320 mm = 32.0 cm); if they do not, one of them is likely a typo, so double-check before calculating. Keep in mind that different hospitals may use different Hadlock variants or other formulas such as Shepard or Warsof, so your report's stated EFW may differ slightly from this calculator's result even with identical measurements.<\/p>\n<p>To track growth over time, record each scan's EFW along with the date, and compare it to the <a href=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/crown-rump-length\/\">crown rump length<\/a> measurements from early pregnancy and the milestones in your <a href=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/pregnancy-due-date\/\">due date<\/a> timeline. If you have already given birth, you may find the <a href=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/newborn-weight-loss-percentage-calculator\/\">newborn weight loss calculator<\/a> useful for monitoring your baby's first days.<\/p>\n<p>Finally, remember that this tool is for information only. It does not replace a medical review of your ultrasound images, and you should always discuss the EFW and its implications with your obstetrician or midwife.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Estimate fetal weight from three routine ultrasound measurements \u2014 head circumference, abdominal circumference and femur length \u2014 using the Hadlock formula. Enter values in mm or cm and get the result in grams, kilograms and pounds.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[45],"tags":[18],"class_list":["post-66454","post","type-post","status-publish","format-standard","hentry","category-pregnancy-baby","tag-baby-growth-genetics"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66454","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=66454"}],"version-history":[{"count":1,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66454\/revisions"}],"predecessor-version":[{"id":66455,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66454\/revisions\/66455"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=66454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=66454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=66454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}