{"id":67401,"date":"2026-10-21T10:17:26","date_gmt":"2026-10-21T07:17:26","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=67401"},"modified":"2026-10-21T10:17:26","modified_gmt":"2026-10-21T07:17:26","slug":"cat-age-calculator-cat-years-to-human-years","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/life\/cat-age-calculator-cat-years-to-human-years\/","title":{"rendered":"Cat Age Calculator \u2013 Cat Years to Human Years"},"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\">Convert Cat Years to Human Years (and Back)<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"67401\" data-favorite-title=\"Cat Age\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/life\/cat-age-calculator-cat-years-to-human-years\/\" data-favorite-excerpt=\"Convert your cat&#039;s age to human years using the AAHA\/AAFP guidelines: the first year equals 15 human years, the second adds 9, and each following year adds 4. Enter years and months or a birth date, and get the life stage and typical life expectancy too.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-wpcalc-paw-print\">\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\/life\/cat-age-calculator-cat-years-to-human-years\/\" method=\"POST\" class=\"calculator\" id=\"calculator-67401\" data-post=\"67401\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field is-single\" id=\"input-1\"><label for=\"field-1\">Conversion direction<\/label><div class=\"grid grid-cols-1\"><select id=\"field-1\" name=\"conversion_direction\"><option value=\"to_human\" selected>Cat age \u2192 human age<\/option><option value=\"to_cat\">Human age \u2192 cat age<\/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><div class=\"field is-single\" id=\"input-2\"><label for=\"field-2\">Age given as<\/label><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"age_given_as\"><option value=\"age\" selected>Age in years and months<\/option><option value=\"birth\">Birth date<\/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><div class=\"is-single field\" id=\"input-3\"><span class=\"font-semibold\">Cat&#039;s Age<\/span><\/div><div class=\"is-single field\" id=\"input-4\" hidden><span class=\"font-semibold\">Human Age<\/span><\/div><div class=\"field has-term\" id=\"input-5\"><label for=\"field-5\">Years<\/label><div class=\"term\">y<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"years\" id=\"field-5\" aria-describedby=\"calc-info-5\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" max=\"116\" value=\"3\"\/><small id=\"calc-info-5\">Whole years \u2014 cat years in the first direction (0\u201325), human years in the second (0\u2013116).<\/small><\/div><div class=\"field has-term\" id=\"input-6\"><label for=\"field-6\">Months<\/label><div class=\"term\">mo<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"months\" id=\"field-6\" aria-describedby=\"calc-info-6\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" max=\"11\" value=\"0\"\/><small id=\"calc-info-6\">Whole months, 0\u201311.<\/small><\/div><div class=\"field\" id=\"input-7\" hidden><label for=\"field-7\">Birth date<\/label><input type=\"date\" name=\"birth_date\" id=\"field-7\" aria-describedby=\"calc-info-7\" step=\"any\" value=\"2022-06-15\"\/><small id=\"calc-info-7\">The age is counted from this date to today.<\/small><\/div><div class=\"field is-single\" id=\"input-8\"><label for=\"field-8\">Lifestyle<\/label><div class=\"grid grid-cols-1\"><select id=\"field-8\" name=\"lifestyle\"><option value=\"indoor\" selected>Indoor cat<\/option><option value=\"mix\">Indoor with outdoor access<\/option><option value=\"outdoor\">Outdoor \/ free-roaming cat<\/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><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"67401\">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> Human Age, Life Stage and Life Expectancy<\/h3><div class=\"result-box\"><div class=\"field-result is-column\" id=\"output-1\"><span class=\"field-title\"><span>Answer<\/span><\/span><span class=\"field-value\" id=\"result-1\"><\/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>Human age \u2014 AAHA\/AAFP guidelines<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"human years\"><\/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>Cat age<\/span><\/span><span class=\"field-value\" id=\"result-3\" data-unit=\"cat years\"><\/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>Life stage<\/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 class=\"field-result\" id=\"output-5\"><span class=\"field-title\"><span>Typical life expectancy<\/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 class=\"field-result is-column\" id=\"output-6\"><span class=\"field-title\"><span>Cat-to-Human Age Chart, 1\u201325 Years<\/span><\/span><span class=\"field-value\" id=\"result-6\"><\/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-7\"><span class=\"field-title\"><span>About the AAHA\/AAFP Method<\/span><\/span><span class=\"field-value\" id=\"result-7\"><\/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=\"67401\" 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<p><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>Cat Age 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\"><\/div>\r\n\t<\/figure>\r\n\t\r\n<\/section><br \/>\n{formula}<br \/>\n\\[ h(c) = \\begin{cases} 15c, &amp; c \\le 1 \\\\ 15 + 9(c-1), &amp; 1  2 \\end{cases} \\]<br \/>\n{\/formula}<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(h\\) \u2014 equivalent age in human years<\/li>\n<li>\\(c\\) \u2014 cat's age in years (months are converted to a fraction, e.g. 4 months = 1\/3 year)<\/li>\n<\/ul>\n<p>This is the AAHA\/AAFP conversion, recommended by the American Animal Hospital Association and the American Association of Feline Practitioners: the first year of a cat's life counts as about 15 human years, the second as 9 more (24 in total), and every further year as about 4 human years.<\/p>\n<p>The reverse direction simply inverts the same rule.<\/p>\n<p>\\[ c(h) = \\begin{cases} h\/15, &amp; h \\le 15 \\\\ 1 + (h-15)\/9, &amp; 15  24 \\end{cases} \\]<br \/>\n{\/wp_code}<\/p>\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>Cat Age \u2013 Calculation Example<\/h2><\/div>\r\n\r\n\r\n<\/section>\n<p><strong>Example:<\/strong> a 3-year-old indoor cat (the calculator's default: 3 years, 0 months, indoor lifestyle).<\/p>\n<p>\\[ c = 3, \\quad h(c) = 24 + 4 \\cdot (3 - 2) = 24 + 4 = 28 \\]<\/p>\n<p><strong>Result:<\/strong> the cat is about <strong>28 human years<\/strong> old \u2014 a young adult by the AAHA\/AAFP life stages. A typical indoor cat can be expected to live about 12\u201318 years, so at 3 this cat is roughly one-fifth of the way through its expected lifespan.<\/p>\n<p><strong>Reverse example:<\/strong> with the direction set to \"Human age \u2192 cat age\", entering 40 human years gives<\/p>\n<p>\\[ c = 2 + \\frac{40 - 24}{4} = 6 \\text{ cat years} \\]<\/p>\n<p>{\/wp_code}<\/p>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Choose the <strong>Conversion direction<\/strong>: \"Cat age \u2192 human age\" to translate your cat's age into human terms, or \"Human age \u2192 cat age\" to compare your own age with a cat's.<\/li>\n<li>For the cat-to-human direction, pick how you want to state the age under <strong>Age given as<\/strong>: \"Age in years and months\" or \"Birth date\".<\/li>\n<li>If you chose age entry, fill in <strong>Years<\/strong> (0\u201325) and <strong>Months<\/strong> (0\u201311). If you chose birth date, the years and months fields are replaced by a <strong>Birth date<\/strong> field \u2014 the age is counted from that date to today.<\/li>\n<li>For the reverse direction, enter the human age in the same <strong>Years<\/strong> and <strong>Months<\/strong> fields (human years are allowed up to 116).<\/li>\n<li>Select the <strong>Lifestyle<\/strong> that best describes the cat: indoor, indoor with outdoor access, or outdoor\/free-roaming. This determines the typical life expectancy shown in the result.<\/li>\n<li>The results show the human age (or cat age), the AAHA\/AAFP life stage, the typical life expectancy for that lifestyle, a chart of human equivalents for cat ages 1\u201325, and a short note on the method. The row of the chart nearest your cat's age is highlighted.<\/li>\n<\/ol>\n<h2>Why cats age differently from humans \u2014 and from dogs<\/h2>\n<p>Cats mature extremely fast in their first two years. A one-year-old cat is already a teenager capable of reproducing, and by age two it is a fully grown adult \u2014 roughly equivalent to a 24-year-old person. After that, aging slows to a steadier pace of about 4 human years per cat year, so a healthy cat that reaches 15 is comparable to a 76-year-old human.<\/p>\n<p>The old \"multiply by 7\" rule of thumb matches none of this: it would make a one-year-old cat only 7 in human terms, when in reality cats are past adolescence by that age. The 2021 AAHA\/AAFP Feline Life Stage Guidelines replaced it with the stepped conversion this calculator uses, which reflects how feline development actually unfolds.<\/p>\n<p>An interesting difference from dogs: in dogs, the conversion rate depends heavily on breed and body size, with small dogs aging more slowly than giant breeds. In cats, virtually all breeds mature at a similar rate, so a single conversion works for every cat.<\/p>\n<p>The guidelines also divide a cat's life into four stages, which the calculator reports alongside the human age: <strong>kitten<\/strong> (birth to 1 year), <strong>young adult<\/strong> (1\u20136 years), <strong>mature adult<\/strong> (7\u201310 years) and <strong>senior<\/strong> (10+ years). These stages matter practically, because veterinary recommendations \u2014 vaccination schedules, dental care, screening frequency \u2014 are tied to them. For example, senior cats are advised to have check-ups twice a year rather than annually.<\/p>\n<h2>Life expectancy: why lifestyle matters more than anything<\/h2>\n<p>The single biggest factor in how long a cat lives is whether it roams outdoors unsupervised. Indoor cats with regular veterinary care typically reach 12\u201318 years, and many live into their early twenties. Cats with some outdoor access average roughly 8\u201313 years, while truly free-roaming cats often live only 2\u20137 years, mostly because of traffic, predators, fights with other cats and infectious disease.<\/p>\n<p>The lifestyle you select therefore changes the \"typical life expectancy\" line in the result. If your cat is already older than the usual range for its lifestyle, the calculator points it out \u2014 an achievement worth a trip to the vet to keep it going. Beyond lifestyle, weight is the other key lever: keeping a cat lean dramatically reduces the risk of diabetes and joint disease.<\/p>\n<h2>Assumptions and limitations<\/h2>\n<ul>\n<li>The conversion is an approximate guideline, not a diagnosis. Individual cats age at different rates depending on genetics, diet, body weight, dental health and veterinary care.<\/li>\n<li>Months are treated as exact twelfths of a year, and ages from a birth date are divided by 365.25 days per year \u2014 close enough for this purpose, but not to the day.<\/li>\n<li>The AAHA\/AAFP rate is the same for all breeds and sizes. If you see much larger or smaller \"equivalents\" for specific breeds elsewhere, they are not part of the veterinary guideline this calculator follows.<\/li>\n<li>Life expectancy figures are typical ranges for well-cared-for cats in developed countries; individual cats can and do fall well outside them, in both directions.<\/li>\n<li>If you are using the result to decide on veterinary care, treat the life stage rather than the raw number as the actionable output \u2014 that is what the guidelines are designed around.<\/li>\n<\/ul>\n<h2>Related calculators<\/h2>\n<p>If you also have a dog, the <a href=\"https:\/\/wpcalc.com\/en\/life\/dog-age-calculator-dog-years-to-human-years\/\">Dog Age Calculator (dog years to human years)<\/a> uses the AVMA\/AAHA size-dependent conversion, which is more complex than the cat method. To predict how big a young puppy will grow, see the <a href=\"https:\/\/wpcalc.com\/en\/life\/puppy-weight-calculator-adult-dog-weight\/\">Puppy Weight Calculator<\/a>, and to work out your cat's exact age from two dates, the <a href=\"https:\/\/wpcalc.com\/en\/life\/time-duration-calculator\/\">Time Duration Calculator<\/a> can measure the span in days, weeks or months.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Convert your cat's age to human years using the AAHA\/AAFP guidelines: the first year equals 15 human years, the second adds 9, and each following year adds 4. Enter years and months or a birth date, and get the life stage and typical life expectancy too.<\/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":[6],"tags":[85],"class_list":["post-67401","post","type-post","status-publish","format-standard","hentry","category-life","tag-pets"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/67401","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=67401"}],"version-history":[{"count":1,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/67401\/revisions"}],"predecessor-version":[{"id":67402,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/67401\/revisions\/67402"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=67401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=67401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=67401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}