{"id":66514,"date":"2026-10-06T17:41:21","date_gmt":"2026-10-06T14:41:21","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=66514"},"modified":"2026-10-06T17:41:21","modified_gmt":"2026-10-06T14:41:21","slug":"water-hardness-calculator","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/chemistry\/water-hardness-calculator\/","title":{"rendered":"Water Hardness 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\">Calculate Water Hardness from Calcium and Magnesium<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"66514\" data-favorite-title=\"Water Hardness\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/chemistry\/water-hardness-calculator\/\" data-favorite-excerpt=\"Enter the measured calcium and magnesium concentrations and this water hardness calculator converts them to total hardness in mg\/L as CaCO\u2083, classifies the water from soft to very hard, and shows the result in grains per gallon, German and French degrees.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-chemistry\">\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\/chemistry\/water-hardness-calculator\/\" method=\"POST\" class=\"calculator\" id=\"calculator-66514\" data-post=\"66514\"><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\">Calcium (Ca\u00b2\u207a)<\/label><div class=\"term\">Ca<\/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=\"calcium_ca\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 50\" min=\"0\" value=\"50\"\/><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"unit\" aria-label=\"Unit\"><option value=\"mgL\" selected>mg\/L<\/option><option value=\"mmolL\">mmol\/L<\/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\">Measured calcium ion concentration in the water sample<\/small><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-3\">Magnesium (Mg\u00b2\u207a)<\/label><div class=\"term\">Mg<\/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=\"magnesium_mg\" id=\"field-3\" aria-describedby=\"calc-info-3\" 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-4\" name=\"unit\" aria-label=\"Unit\"><option value=\"mgL\" selected>mg\/L<\/option><option value=\"mmolL\">mmol\/L<\/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\">Measured magnesium ion concentration in the water sample<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"66514\">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> Water Hardness Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Total Hardness<\/span><span class=\"result-term\">TH<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"mg\/L as CaCO\u2083\"><\/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-2\"><span class=\"field-title\"><span>Hardness Classification<\/span><\/span><span class=\"field-value\" id=\"result-2\"><\/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>In Other Units<\/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 class=\"field-result is-column\" id=\"output-4\"><span class=\"field-title\"><span>Calculation Details<\/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=\"66514\" 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>Water Hardness 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\\[ TH = \\left[ \\text{Ca}^{2+} \\right] \\times \\frac{M_{\\text{CaCO}_3}}{M_{\\text{Ca}}} + \\left[ \\text{Mg}^{2+} \\right] \\times \\frac{M_{\\text{CaCO}_3}}{M_{\\text{Mg}}} \\]\n\\[ TH = 2.497 \\times \\left[ \\text{Ca}^{2+} \\right] + 4.118 \\times \\left[ \\text{Mg}^{2+} \\right] \\quad \\text{(mg\/L as CaCO}_3\\text{, with ion concentrations in mg\/L)} \\]<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(TH\\) \u2014 total hardness (mg\/L as CaCO\u2083)<\/li>\n<li>\\(\\left[ \\text{Ca}^{2+} \\right]\\) \u2014 calcium ion concentration (mg\/L)<\/li>\n<li>\\(\\left[ \\text{Mg}^{2+} \\right]\\) \u2014 magnesium ion concentration (mg\/L)<\/li>\n<li>\\(M_{\\text{CaCO}_3} = 100.09\\) g\/mol, \\(M_{\\text{Ca}} = 40.078\\) g\/mol, \\(M_{\\text{Mg}} = 24.305\\) g\/mol \u2014 molar masses<\/li>\n<\/ul>\n<p>The formula expresses each ion's concentration as an equivalent amount of calcium carbonate, the standard reference substance for water hardness, and sums the two contributions. If your concentrations are given in mmol\/L, multiply by the molar mass of the ion (40.078 for Ca\u00b2\u207a, 24.305 for Mg\u00b2\u207a) to convert to mg\/L first.<\/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>Water Hardness \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> a household water sample contains 50 mg\/L of calcium and 10 mg\/L of magnesium. What is the total hardness?<\/p>\n<p>\\[ TH_{\\text{Ca}} = 50 \\times \\frac{100.09}{40.078} = 50 \\times 2.497 = 124.9 \\text{ mg\/L as CaCO}_3 \\]<\/p>\n<p>\\[ TH_{\\text{Mg}} = 10 \\times \\frac{100.09}{24.305} = 10 \\times 4.118 = 41.2 \\text{ mg\/L as CaCO}_3 \\]<\/p>\n<p>\\[ TH = 124.9 + 41.2 = 166.0 \\text{ mg\/L as CaCO}_3 \\]<\/p>\n<p><strong>Result:<\/strong> the total hardness is <strong>166.0 mg\/L as CaCO\u2083<\/strong>, which classifies the water as <strong>hard water<\/strong> (121\u2013180 mg\/L band). In other units this equals about 9.7 grains per US gallon, 9.3 German degrees (\u00b0dH), 16.6 French degrees (\u00b0fH), 1.659 mmol\/L and 3.318 mEq\/L as CaCO\u2083. Calcium contributes 75.2% of the hardness and magnesium 24.8%.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Water Hardness Calculator<\/h2>\n<ol>\n<li>Enter the measured calcium concentration in the <strong>Calcium (Ca\u00b2\u207a)<\/strong> field and choose <strong>mg\/L<\/strong> or <strong>mmol\/L<\/strong> as the unit.<\/li>\n<li>Enter the measured magnesium concentration in the <strong>Magnesium (Mg\u00b2\u207a)<\/strong> field and select its unit. Both values must be zero or greater, and at least one must be non-zero.<\/li>\n<li>Read the <strong>Total Hardness<\/strong> result in mg\/L as CaCO\u2083.<\/li>\n<li>Check the <strong>Hardness Classification<\/strong> (soft, moderately hard, hard, or very hard), the equivalent values in other units, and the step-by-step calculation details.<\/li>\n<\/ol>\n<h2>What Is Water Hardness?<\/h2>\n<p>Water hardness is a measure of the dissolved polyvalent metal ions in water \u2014 in practice, almost entirely calcium (Ca\u00b2\u207a) and magnesium (Mg\u00b2\u207a). As rainwater percolates through limestone, chalk, gypsum and other minerals, it dissolves calcium and magnesium compounds, so hard water is typical in regions with sedimentary rock, while soft water is common where granite dominates the geology.<\/p>\n<p>Hardness is conventionally reported \"as CaCO\u2083\": every hardness-causing ion is converted to the mass of calcium carbonate that would produce the same effect. This makes results from different water sources directly comparable on a single scale. The common classification bands are 0\u201360 mg\/L as CaCO\u2083 for soft water, 61\u2013120 mg\/L for moderately hard, 121\u2013180 mg\/L for hard, and above 180 mg\/L for very hard water \u2014 the same bands used by the WHO and the US Geological Survey.<\/p>\n<p>Hardness matters mainly for practical, not health, reasons. Hard water forms limescale in kettles, boilers, dishwashers and hot-water pipes, reduces the efficiency of detergents by forming soap scum, and leaves spots on glassware and fixtures. Soft water, on the other hand, can be slightly corrosive to pipes. Neither extreme is dangerous: calcium and magnesium are essential dietary minerals, and drinking hard water actually contributes a small share of your daily intake of both. If you analyse other aspects of the same sample, our <a href=\"https:\/\/wpcalc.com\/en\/chemistry\/ph-calculator\/\">pH calculator<\/a> and <a href=\"https:\/\/wpcalc.com\/en\/chemistry\/ionic-strength-calculator\/\">ionic strength calculator<\/a> cover related water-chemistry parameters.<\/p>\n<p>Interpreting your result is straightforward: below 60 mg\/L you will rarely notice hardness effects; 61\u2013120 mg\/L is fine for most uses but may show mild scale; 121\u2013180 mg\/L usually means visible scale in kettles and noticeable soap consumption; above 180 mg\/L, a water softener or descaling maintenance is often worthwhile.<\/p>\n<h2>Assumptions, Limitations and Practical Tips<\/h2>\n<ul>\n<li><strong>Only Ca\u00b2\u207a and Mg\u00b2\u207a are counted.<\/strong> Other polyvalent ions \u2014 Fe\u00b2\u207a, Mn\u00b2\u207a, Sr\u00b2\u207a, Al\u00b3\u207a \u2014 also contribute to hardness, but in normal drinking water their concentrations are negligible compared with calcium and magnesium.<\/li>\n<li><strong>Measure the ions, not the salts.<\/strong> Enter the concentration of the free calcium and magnesium ions (as reported by a water analysis or test strip for Ca and Mg), not the mass of compounds such as CaCl\u2082. If your lab report lists concentrations in mmol\/L, the calculator converts them automatically. For help converting between concentration units, see the <a href=\"https:\/\/wpcalc.com\/en\/chemistry\/molarity-calculator\/\">molarity calculator<\/a> and <a href=\"https:\/\/wpcalc.com\/en\/chemistry\/normality-calculator\/\">normality calculator<\/a>.<\/li>\n<li><strong>mg\/L \u2248 ppm.<\/strong> For water, 1 mg\/L is practically identical to 1 part per million, so values from ppm test kits can be entered directly.<\/li>\n<li><strong>Temporary vs. permanent hardness.<\/strong> This calculator reports total hardness. Temporary (carbonate) hardness can be removed by boiling; permanent hardness cannot. Boiling a kettle can therefore slightly reduce hardness in hard-water areas, while the scale left behind is the deposited CaCO\u2083.<\/li>\n<li><strong>Home test kits<\/strong> usually report total hardness directly in mg\/L as CaCO\u2083 or in grains per gallon (1 gpg = 17.118 mg\/L as CaCO\u2083). If your kit already gives hardness as CaCO\u2083, you do not need this conversion \u2014 this tool is for when you know the separate Ca and Mg concentrations.<\/li>\n<li><strong>Hard water and precipitation.<\/strong> Very hard water combined with a high pH is more prone to scale formation; to explore whether a sparingly soluble salt will precipitate from a solution, try our <a href=\"https:\/\/wpcalc.com\/en\/chemistry\/precipitation-prediction-calculator\/\">precipitation prediction calculator<\/a>.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Enter the measured calcium and magnesium concentrations and this water hardness calculator converts them to total hardness in mg\/L as CaCO\u2083, classifies the water from soft to very hard, and shows the result in grains per gallon, German and French degrees.<\/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":[54],"tags":[56],"class_list":["post-66514","post","type-post","status-publish","format-standard","hentry","category-chemistry","tag-stoichiometry"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66514","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=66514"}],"version-history":[{"count":2,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66514\/revisions"}],"predecessor-version":[{"id":67068,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66514\/revisions\/67068"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=66514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=66514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=66514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}