{"id":66943,"date":"2026-10-13T10:36:04","date_gmt":"2026-10-13T07:36:04","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=66943"},"modified":"2026-10-13T10:36:04","modified_gmt":"2026-10-13T07:36:04","slug":"faradays-law-calculator","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/physics\/faradays-law-calculator\/","title":{"rendered":"Faraday's Law 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\">Find the Induced EMF from Changing Magnetic Flux<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"66943\" data-favorite-title=\"Faraday&#039;s Law\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/physics\/faradays-law-calculator\/\" data-favorite-excerpt=\"Calculate the induced EMF (voltage) from a changing magnetic flux using Faraday&#039;s law. Enter the number of coil turns, the flux change \u0394\u03a6, and the time interval \u0394t.\" 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\/physics\/faradays-law-calculator\/\" method=\"POST\" class=\"calculator\" id=\"calculator-66943\" data-post=\"66943\"><fieldset class=\"fieldset-input is-2\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Number of Turns (N)<\/label><div class=\"term\">N<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"number_of_turns_n\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 100\" min=\"1\" value=\"100\"\/><small id=\"calc-info-1\">Turns of the coil \u2014 a whole number is usual, but decimals are accepted<\/small><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">Change in Magnetic Flux (\u0394\u03a6)<\/label><div class=\"term\">\u0394\u03a6<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"text\" name=\"change_in_magnetic_flux_\" id=\"field-2\" aria-describedby=\"calc-info-2\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 5\" min=\"0\" value=\"5\"\/><div class=\"grid grid-cols-1\"><select id=\"field-3\" name=\"flux_unit\" aria-label=\"Flux unit\"><option value=\"uwb\">\u00b5Wb<\/option><option value=\"mwb\" selected>mWb<\/option><option value=\"wb\">Wb<\/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-2\">Absolute change of the flux through the coil: \u0394\u03a6 = |\u03a6\u2082 \u2212 \u03a6\u2081|<\/small><\/div><div class=\"field has-term\" id=\"input-3\"><label for=\"field-4\">Time Interval (\u0394t)<\/label><div class=\"term\">\u0394t<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"text\" name=\"time_interval_t\" id=\"field-4\" aria-describedby=\"calc-info-4\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 0.1\" min=\"0\" value=\"0.1\"\/><div class=\"grid grid-cols-1\"><select id=\"field-5\" name=\"time_unit\" aria-label=\"Time unit\"><option value=\"ms\">ms<\/option><option value=\"s\" selected>s<\/option><option value=\"min\">min<\/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-4\">Time over which the flux change happens<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"66943\">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> Faraday&#039;s Law Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Induced EMF<\/span><span class=\"result-term\">|\u03b5|<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"V\"><\/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 Millivolts<\/span><span class=\"result-term\">|\u03b5|<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"mV\"><\/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-3\"><span class=\"field-title\"><span>Calculation Details<\/span><\/span><span class=\"field-value\" id=\"result-3\"><\/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=\"66943\" 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>Faraday's Law 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\\[ \\varepsilon = -N \\frac{d\\Phi}{dt} \\qquad \\text{or, for the magnitude of the average EMF:} \\qquad |\\varepsilon| = N \\frac{\\Delta\\Phi}{\\Delta t} \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(\\varepsilon\\) \u2014 induced electromotive force, EMF (volts, V)<\/li>\n<li>\\(N\\) \u2014 number of turns of the coil<\/li>\n<li>\\(\\Phi\\) \u2014 magnetic flux through one turn of the coil (webers, Wb)<\/li>\n<li>\\(\\Delta\\Phi\\) \u2014 change in magnetic flux, \\(\\Delta\\Phi = |\\Phi_2 - \\Phi_1|\\) (Wb)<\/li>\n<li>\\(\\Delta t\\) \u2014 time interval over which the flux changes (seconds, s)<\/li>\n<\/ul>\n<p>The formula states that the EMF induced in a coil is proportional to how fast the magnetic flux through it changes: more turns and a faster flux change produce a larger voltage. The minus sign is Lenz's law \u2014 the induced EMF always opposes the change in flux that created it.<\/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>Faraday's Law \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> a 100-turn coil sits in a magnetic field. The flux through the coil drops by 5 mWb over a period of 0.1 s (for example, when a magnet is pulled away from the coil). What EMF is induced?<\/p>\n<p>\\[ \\Delta\\Phi = 5\\ \\text{mWb} = 0.005\\ \\text{Wb}, \\qquad \\Delta t = 0.1\\ \\text{s} \\]<\/p>\n<p>\\[ |\\varepsilon| = N \\frac{\\Delta\\Phi}{\\Delta t} = 100 \\times \\frac{0.005}{0.1} \\]<\/p>\n<p><strong>Result:<\/strong> \\( |\\varepsilon| = 5\\ \\text{V} \\) (5,000 mV). The coil develops an average induced EMF of 5 volts while the flux is changing.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Faraday's Law Calculator<\/h2>\n<ol>\n<li>Enter the <strong>Number of Turns (N)<\/strong> of your coil. This is usually a whole number, e.g. 100.<\/li>\n<li>Enter the <strong>Change in Magnetic Flux (\u0394\u03a6)<\/strong> \u2014 the absolute difference between the final and initial flux, \\( |\\Phi_2 - \\Phi_1| \\). Choose the unit: \u00b5Wb, mWb, or Wb.<\/li>\n<li>Enter the <strong>Time Interval (\u0394t)<\/strong> over which the change occurs, and select its unit: ms, s, or min.<\/li>\n<li>Read the <strong>Induced EMF<\/strong> in volts (V) and <strong>In Millivolts<\/strong> (mV), together with the full calculation details.<\/li>\n<\/ol>\n<h2>What Is Faraday's Law of Induction?<\/h2>\n<p>Faraday's law of induction, discovered by Michael Faraday in 1831, is one of the cornerstones of electromagnetism. It states that a changing magnetic flux through a circuit induces an electromotive force \u2014 a voltage \u2014 in that circuit. No voltage appears if the flux is constant: something must change. The change can come from moving a magnet toward or away from a coil, moving the coil in a magnetic field, varying the field strength over time, or rotating the coil (which is exactly how generators work).<\/p>\n<p>Magnetic flux \\( \\Phi \\) measures how much magnetic field passes through a surface. It equals \\( \\Phi = B A \\cos\\theta \\), where \\( B \\) is the magnetic flux density (in tesla), \\( A \\) is the area of the coil, and \\( \\theta \\) is the angle between the field and the normal to the surface. Its unit, the weber, satisfies \\( 1\\ \\text{Wb} = 1\\ \\text{T}\\cdot\\text{m}^2 = 1\\ \\text{V}\\cdot\\text{s} \\).<\/p>\n<p>The result \\( |\\varepsilon| = N\\Delta\\Phi\/\\Delta t \\) is the <em>average<\/em> EMF over the time interval. If the flux changes at a constant rate, the average and the instantaneous EMF are the same. If the change is non-uniform (for instance, a sinusoidal flux in an AC generator), the instantaneous EMF at each moment is \\( N|d\\Phi\/dt| \\), which can be larger or smaller than the average.<\/p>\n<p>The minus sign in the full law encodes <strong>Lenz's law<\/strong>: the induced current flows in the direction that opposes the change in flux. This is why the EMF is negative when the flux increases and positive when it decreases. This calculator returns the magnitude of the EMF, which is usually what you need for solving problems \u2014 the direction follows from Lenz's law once you know whether the flux is growing or shrinking.<\/p>\n<h2>Assumptions, Limitations and Practical Tips<\/h2>\n<ul>\n<li><strong>Average EMF only:<\/strong> the calculator uses the finite-change form \\( N\\Delta\\Phi\/\\Delta t \\). For rapidly or non-uniformly varying flux, treat the result as the average over the interval, not the instantaneous value.<\/li>\n<li><strong>Uniform flux through the coil:<\/strong> every turn is assumed to link the same flux \\( \\Phi \\). In tightly wound, compact coils this is a very good approximation.<\/li>\n<li><strong>Self-inductance is ignored:<\/strong> the calculator computes the EMF from the external flux change. In real coils, the induced current creates its own flux (self-inductance), which slightly alters the observed voltage.<\/li>\n<li><strong>Flux change is what matters:<\/strong> if \\( \\Delta\\Phi = 0 \\), no EMF is induced \u2014 a stationary coil in a constant field produces nothing, no matter how strong the field is.<\/li>\n<li><strong>Check your units:<\/strong> mixing units is the most common source of errors. 1 mWb = 10<sup>\u22123<\/sup> Wb and 1 \u00b5Wb = 10<sup>\u22126<\/sup> Wb; 1 ms = 10<sup>\u22123<\/sup> s. The calculator converts everything to webers and seconds automatically.<\/li>\n<\/ul>\n<p>Faraday's law is the working principle behind electric generators, transformers, induction cooktops, wireless charging, and metal detectors. If you are exploring other foundational physics laws, try our <a href=\"https:\/\/wpcalc.com\/en\/physics\/hookes-law-calculator\/\">Hooke's Law calculator<\/a> for elastic forces, the <a href=\"https:\/\/wpcalc.com\/en\/physics\/electric-field-of-a-point-charge-calculator\/\">Point Charge Electric Field calculator<\/a> for electrostatics, or the <a href=\"https:\/\/wpcalc.com\/en\/physics\/gravitational-force-calculator\/\">Gravitational Force calculator<\/a> for Newtonian attraction.<\/p>\n<h2>Quick Reference: Typical Values<\/h2>\n<table>\n<thead>\n<tr>\n<th>Scenario<\/th>\n<th>N<\/th>\n<th>\u0394\u03a6<\/th>\n<th>\u0394t<\/th>\n<th>Induced EMF<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Magnet pulled from a small coil<\/td>\n<td>100<\/td>\n<td>1 mWb<\/td>\n<td>0.05 s<\/td>\n<td>2 V<\/td>\n<\/tr>\n<tr>\n<td>Generator coil rotating once per cycle<\/td>\n<td>500<\/td>\n<td>10 mWb<\/td>\n<td>0.02 s<\/td>\n<td>250 V<\/td>\n<\/tr>\n<tr>\n<td>Slowly changing transformer core flux<\/td>\n<td>1,000<\/td>\n<td>2 mWb<\/td>\n<td>0.1 s<\/td>\n<td>20 V<\/td>\n<\/tr>\n<tr>\n<td>Fast flux pulse in a sensor coil<\/td>\n<td>50<\/td>\n<td>0.2 mWb<\/td>\n<td>5 ms<\/td>\n<td>2 V<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Calculate the induced EMF (voltage) from a changing magnetic flux using Faraday's law. Enter the number of coil turns, the flux change \u0394\u03a6, and the time interval \u0394t.<\/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":[62],"tags":[91],"class_list":["post-66943","post","type-post","status-publish","format-standard","hentry","category-physics","tag-energy-work"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66943","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=66943"}],"version-history":[{"count":1,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66943\/revisions"}],"predecessor-version":[{"id":66944,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66943\/revisions\/66944"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=66943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=66943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=66943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}