{"id":66965,"date":"2026-10-13T10:42:58","date_gmt":"2026-10-13T07:42:58","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=66965"},"modified":"2026-10-13T10:42:58","modified_gmt":"2026-10-13T07:42:58","slug":"magnetic-field-of-a-straight-wire-calculator","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/physics\/magnetic-field-of-a-straight-wire-calculator\/","title":{"rendered":"Magnetic Field of a Straight Wire 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 Magnetic Flux Density Near a Current-Carrying Wire<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"66965\" data-favorite-title=\"Straight Wire Magnetic Field\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/physics\/magnetic-field-of-a-straight-wire-calculator\/\" data-favorite-excerpt=\"Calculate the magnetic flux density around a long straight current-carrying wire using Amp\u00e8re&#039;s law. Enter the current, distance from the wire, and optional relative permeability to get the result in \u00b5T, mT, T or gauss.\" 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\/magnetic-field-of-a-straight-wire-calculator\/\" method=\"POST\" class=\"calculator\" id=\"calculator-66965\" data-post=\"66965\"><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\">Current (I)<\/label><div class=\"term\">I<\/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=\"current_i\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 10\" min=\"0\" value=\"10\"\/><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"current_unit\" aria-label=\"Current unit\"><option value=\"ma\">mA<\/option><option value=\"a\" selected>A<\/option><option value=\"ka\">kA<\/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\">Current flowing through the straight wire<\/small><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-3\">Distance from Wire (r)<\/label><div class=\"term\">r<\/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=\"distance_from_wire_r\" id=\"field-3\" aria-describedby=\"calc-info-3\" 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-4\" name=\"distance_unit\" aria-label=\"Distance unit\"><option value=\"mm\">mm<\/option><option value=\"cm\" selected>cm<\/option><option value=\"m\">m<\/option><option value=\"in\">in<\/option><option value=\"ft\">ft<\/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\">Perpendicular distance from the wire to the point of interest<\/small><\/div><div class=\"field is-checkbox is-single\" id=\"input-3\"><input type=\"checkbox\" id=\"field-5\" value=\"1\"\/><label for=\"field-5\">Custom Relative Permeability (\u03bcr)<\/label><\/div><div class=\"field has-term\" id=\"input-4\" hidden><label for=\"field-6\">Relative Permeability (\u03bcr)<\/label><div class=\"term\">\u03bcr<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"relative_permeability_r\" id=\"field-6\" aria-describedby=\"calc-info-6\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 200\" min=\"0.0001\" value=\"1\"\/><small id=\"calc-info-6\">Ratio of the medium&#039;s permeability to that of vacuum: \u03bcr \u2265 1 for most materials<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"66965\">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> Magnetic Field Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Magnetic Flux Density<\/span><span class=\"result-term\">B<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"\u00b5T\"><\/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 Millitesla<\/span><span class=\"result-term\">B<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"mT\"><\/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 Tesla<\/span><span class=\"result-term\">B<\/span><\/span><span class=\"field-value\" id=\"result-3\" data-unit=\"T\"><\/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-4\"><span class=\"field-title\"><span>In Gauss<\/span><span class=\"result-term\">B<\/span><\/span><span class=\"field-value\" id=\"result-4\" 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 is-column\" id=\"output-5\"><span class=\"field-title\"><span>Calculation Details<\/span><\/span><span class=\"field-value\" id=\"result-5\"><\/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=\"66965\" 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>Straight Wire Magnetic Field<\/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\\[ B = \\frac{\\mu_0 \\, \\mu_r \\, I}{2 \\pi r}, \\qquad \\mu_0 = 4\\pi \\times 10^{-7}\\ \\text{T\u00b7m\/A} \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(B\\) \u2014 magnetic flux density at distance \\(r\\) from the wire (T)<\/li>\n<li>\\(\\mu_0\\) \u2014 permeability of vacuum, \\(4\\pi \\times 10^{-7}\\) T\u00b7m\/A<\/li>\n<li>\\(\\mu_r\\) \u2014 relative permeability of the surrounding medium (1 for air or vacuum)<\/li>\n<li>\\(I\\) \u2014 current flowing through the wire (A)<\/li>\n<li>\\(r\\) \u2014 perpendicular distance from the wire to the point of interest (m)<\/li>\n<\/ul>\n<p>This is Amp\u00e8re's law applied to an infinitely long, straight conductor: the field forms concentric circles around the wire and its magnitude decreases in proportion to \\(1\/r\\).<\/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>Straight Wire Magnetic Field \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> a long straight wire carries a current of 10 A. What is the magnetic flux density 5 cm away from the wire, in air (\\(\\mu_r = 1\\))?<\/p>\n<p>\\[ B = \\frac{4\\pi \\times 10^{-7} \\times 1 \\times 10}{2\\pi \\times 0.05} = \\frac{2 \\times 10^{-6}}{0.05} = 4 \\times 10^{-5}\\ \\text{T} \\]<\/p>\n<p><strong>Result:<\/strong> \\(B = 40\\ \\mu\\text{T} = 0.04\\ \\text{mT} = 0.4\\ \\text{G}\\). This is comparable to the Earth's magnetic field (roughly 25\u201365 \u00b5T).<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Calculator<\/h2>\n<ol>\n<li>Enter the current flowing through the wire in the <strong>Current (I)<\/strong> field and choose its unit: mA, A or kA.<\/li>\n<li>Enter the perpendicular distance from the wire to the point where you want the field in <strong>Distance from Wire (r)<\/strong> and pick the unit: mm, cm, m, in or ft.<\/li>\n<li>Leave <strong>Custom Relative Permeability (\u03bcr)<\/strong> unchecked if the wire is surrounded by air or vacuum. Check it and enter a value only for other media, such as a ferromagnetic material.<\/li>\n<li>Read the <strong>Magnetic Flux Density<\/strong> in \u00b5T, mT, T or gauss. The <strong>Calculation Details<\/strong> block shows the full substitution step by step.<\/li>\n<\/ol>\n<h2>What Is the Magnetic Field of a Straight Wire?<\/h2>\n<p>When an electric current flows through a conductor, it generates a magnetic field around it. For a long, straight wire the field lines are concentric circles centered on the wire, lying in planes perpendicular to it. The direction of the field follows the right-hand rule: point the thumb of your right hand along the conventional current, and your curled fingers show the direction in which the field circulates.<\/p>\n<p>The magnitude of the field follows directly from Amp\u00e8re's law. Because the field is symmetric around the wire, integrating it around a circle of radius \\(r\\) gives \\(B \\cdot 2\\pi r = \\mu_0 \\mu_r I\\), which leads to the formula \\(B = \\mu_0 \\mu_r I \/ (2\\pi r)\\). Two key features stand out: the field grows linearly with the current, and it falls off as \\(1\/r\\) \u2014 doubling the distance from the wire halves the field strength.<\/p>\n<p>The result is expressed as magnetic flux density \\(B\\), measured in tesla (T). In practice, fields around everyday currents are small, so microtesla (\u00b5T) and millitesla (mT) are often more convenient; the older CGS unit gauss (G) is still common, with \\(1\\ \\text{mT} = 10\\ \\text{G}\\). For context, a typical refrigerator magnet is about 5 mT, Earth's field is 25\u201365 \u00b5T, and the wire in the example above (10 A at 5 cm) produces 40 \u00b5T.<\/p>\n<p>A related quantity is the magnetic field strength \\(H = I \/ (2\\pi r)\\) in A\/m; the flux density is \\(B = \\mu_0 \\mu_r H\\). If you need the effect this field has on a moving charge, see the <a href=\"https:\/\/wpcalc.com\/en\/physics\/magnetic-force-on-a-moving-charge-calculator\/\">Magnetic Force on a Charge calculator<\/a>, and if the field changes over time, the induced voltage follows from <a href=\"https:\/\/wpcalc.com\/en\/physics\/faradays-law-calculator\/\">Faraday's Law<\/a>.<\/p>\n<h2>Assumptions, Limitations and Practical Tips<\/h2>\n<ul>\n<li><strong>Infinitely long wire:<\/strong> the formula assumes a very long, straight conductor. It is accurate at points close to a long wire (where the distance is small compared with the wire's length) and becomes less reliable near the ends, bends, or coils. For a coiled wire, the field is better described by solenoid formulas.<\/li>\n<li><strong>Thin wire:<\/strong> the wire's own radius is assumed negligible. The formula describes the field outside the wire; inside a real conductor of radius \\(R\\), the field grows linearly, \\(B \\propto r\\), reaching its maximum at the surface.<\/li>\n<li><strong>Homogeneous medium:<\/strong> the calculation assumes the same permeability everywhere around the wire. Use \\(\\mu_r = 1\\) for air, vacuum, copper, water and most non-magnetic materials. Values well above 1 apply to ferromagnetic media such as iron, which can amplify the field by factors of hundreds or thousands.<\/li>\n<li><strong>No nearby currents:<\/strong> other conductors nearby also contribute their own fields, which add as vectors. This matters in cable bundles, where currents flowing in opposite directions can partially cancel each other's fields.<\/li>\n<li><strong>Static current:<\/strong> the formula applies to direct current (and, to a good approximation, slowly varying currents). Rapidly varying currents introduce radiation and skin-effect corrections.<\/li>\n<\/ul>\n<p>A useful sanity check: at 1 cm from a wire carrying 1 A, the field is 20 \u00b5T in air. Scale linearly with current and inversely with distance to estimate any other configuration quickly. For other electromagnetic and physics computations, you can also explore the <a href=\"https:\/\/wpcalc.com\/en\/physics\/electric-field-of-a-point-charge-calculator\/\">Point Charge Electric Field calculator<\/a> and the <a href=\"https:\/\/wpcalc.com\/en\/physics\/parallel-plate-capacitor-calculator\/\">Parallel Plate Capacitor calculator<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Calculate the magnetic flux density around a long straight current-carrying wire using Amp\u00e8re's law. Enter the current, distance from the wire, and optional relative permeability to get the result in \u00b5T, mT, T or gauss.<\/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":[73],"class_list":["post-66965","post","type-post","status-publish","format-standard","hentry","category-physics","tag-mechanics"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66965","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=66965"}],"version-history":[{"count":1,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66965\/revisions"}],"predecessor-version":[{"id":66966,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66965\/revisions\/66966"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=66965"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=66965"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=66965"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}