{"id":2427,"date":"2026-02-13T00:19:57","date_gmt":"2026-02-12T22:19:57","guid":{"rendered":"https:\/\/bio-me.bio\/?page_id=2427"},"modified":"2026-02-17T20:55:50","modified_gmt":"2026-02-17T18:55:50","slug":"vo%e2%82%82max-estimate-calculator","status":"publish","type":"page","link":"https:\/\/bio-me.bio\/?page_id=2427","title":{"rendered":"VO\u2082max Estimate Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"eco-tool-vo2-52b1a\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">VO\u2082max Estimate Calculator<\/h2>\n    <p class=\"eco-tool__lead\">\n      Estimate VO\u2082max from common field tests. Results are approximate and depend on effort, conditions, and measurement accuracy.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"eco-vo2-form-52b1a\" novalidate>\n    <div class=\"eco-tool__grid3\">\n      <!-- Test -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-vo2-test-52b1a\">\n          Test<br>method\n        <\/label>\n        <select class=\"eco-tool__input\" id=\"eco-vo2-test-52b1a\">\n          <option value=\"cooper\" selected>Cooper 12-minute run<\/option>\n          <option value=\"rockport\">Rockport 1-mile walk<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Choose the test you performed.<\/div>\n      <\/div>\n\n      <!-- Cooper inputs -->\n      <div class=\"eco-tool__field\" id=\"eco-vo2-cooper-wrap-52b1a\">\n        <label class=\"eco-tool__label\" for=\"eco-vo2-cooper-dist-52b1a\">\n          Distance in 12 minutes<br>(meters)\n        <\/label>\n        <input class=\"eco-tool__input\" id=\"eco-vo2-cooper-dist-52b1a\" type=\"number\" min=\"0\" step=\"1\" placeholder=\"e.g., 2400\" inputmode=\"numeric\" \/>\n        <div class=\"eco-tool__hint\">Enter total distance covered in 12 minutes.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\" id=\"eco-vo2-cooper-tip-52b1a\">\n        <label class=\"eco-tool__label\">Cooper formula<\/label>\n        <div class=\"eco-tool__noteBox\">\n          VO\u2082max \u2248 (distance \u2212 504.9) \/ 44.73\n        <\/div>\n        <div class=\"eco-tool__hint\">Distance in meters.<\/div>\n      <\/div>\n\n      <!-- Rockport inputs -->\n      <div class=\"eco-tool__field\" id=\"eco-vo2-rock-time-wrap-52b1a\" style=\"display:none;\">\n        <label class=\"eco-tool__label\">\n          1-mile walk time<br>(mm:ss)\n        <\/label>\n        <div class=\"eco-tool__row2\">\n          <input class=\"eco-tool__input\" id=\"eco-vo2-rock-min-52b1a\" type=\"number\" min=\"0\" step=\"1\" placeholder=\"mm\" inputmode=\"numeric\" \/>\n          <input class=\"eco-tool__input\" id=\"eco-vo2-rock-sec-52b1a\" type=\"number\" min=\"0\" max=\"59\" step=\"1\" placeholder=\"ss\" inputmode=\"numeric\" \/>\n        <\/div>\n        <div class=\"eco-tool__hint\">Enter the time it took to walk 1 mile.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\" id=\"eco-vo2-rock-hr-wrap-52b1a\" style=\"display:none;\">\n        <label class=\"eco-tool__label\" for=\"eco-vo2-rock-hr-52b1a\">\n          Heart rate at finish<br>(bpm)\n        <\/label>\n        <input class=\"eco-tool__input\" id=\"eco-vo2-rock-hr-52b1a\" type=\"number\" min=\"30\" max=\"220\" step=\"1\" placeholder=\"e.g., 140\" inputmode=\"numeric\" \/>\n        <div class=\"eco-tool__hint\">Measure right at the end of the walk.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\" id=\"eco-vo2-rock-age-wrap-52b1a\" style=\"display:none;\">\n        <label class=\"eco-tool__label\" for=\"eco-vo2-rock-age-52b1a\">\n          Age<br>(years)\n        <\/label>\n        <input class=\"eco-tool__input\" id=\"eco-vo2-rock-age-52b1a\" type=\"number\" min=\"5\" max=\"110\" step=\"1\" placeholder=\"e.g., 35\" inputmode=\"numeric\" \/>\n        <div class=\"eco-tool__hint\">Used in the Rockport equation.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\" id=\"eco-vo2-rock-sex-wrap-52b1a\" style=\"display:none;\">\n        <label class=\"eco-tool__label\" for=\"eco-vo2-rock-sex-52b1a\">\n          Sex<br>(for equation)\n        <\/label>\n        <select class=\"eco-tool__input\" id=\"eco-vo2-rock-sex-52b1a\">\n          <option value=\"male\" selected>Male<\/option>\n          <option value=\"female\">Female<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Rockport uses a sex coefficient.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\" id=\"eco-vo2-rock-weight-wrap-52b1a\" style=\"display:none;\">\n        <label class=\"eco-tool__label\" for=\"eco-vo2-rock-weight-52b1a\">\n          Body weight<br>(kg)\n        <\/label>\n        <input class=\"eco-tool__input\" id=\"eco-vo2-rock-weight-52b1a\" type=\"number\" min=\"0\" step=\"any\" placeholder=\"e.g., 70\" inputmode=\"decimal\" \/>\n        <div class=\"eco-tool__hint\">Enter weight in kilograms.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\" id=\"eco-vo2-rock-formula-wrap-52b1a\" style=\"display:none;\">\n        <label class=\"eco-tool__label\">Rockport formula<\/label>\n        <div class=\"eco-tool__noteBox\">\n          VO\u2082max \u2248 132.853 \u2212 0.0769\u00d7weight(lb) \u2212 0.3877\u00d7age \u2212 3.2649\u00d7time(min)\n          \u2212 0.1565\u00d7HR + 6.315\u00d7(male=1,female=0)\n        <\/div>\n        <div class=\"eco-tool__hint\">We convert kg \u2192 lb internally.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__actions\">\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn\" id=\"eco-vo2-calc-52b1a\">Calculate<\/button>\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"eco-vo2-reset-52b1a\">Reset<\/button>\n      <div class=\"eco-tool__error\" id=\"eco-vo2-error-52b1a\" aria-live=\"polite\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"eco-vo2-result-52b1a\" hidden>\n    <h3 class=\"eco-tool__subtitle\">Estimated VO\u2082max<\/h3>\n\n    <div class=\"eco-tool__cards\">\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">VO\u2082max<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-vo2-out-52b1a\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\">mL\/kg\/min<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Method<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"eco-vo2-method-52b1a\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub eco-tool__muted\" id=\"eco-vo2-eq-52b1a\">\u2014<\/div>\n      <\/div>\n    <\/div>\n\n    <p class=\"eco-tool__note\">\n      Field-test estimates can be off. Use consistent conditions if you track progress over time.\n    <\/p>\n  <\/div>\n<\/div>\n\n<style>\n.eco-tool{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:16px}\n.eco-tool__grid3{display:grid;grid-template-columns:1fr;gap:16px}\n@media (min-width:860px){.eco-tool__grid3{grid-template-columns:1fr 1fr 1fr}}\n.eco-tool__field{display:flex;flex-direction:column;gap:6px}\n.eco-tool__label{font-weight:600}\n.eco-tool__input{height:44px;padding:0 12px;border:1px solid rgba(0,0,0,.2);border-radius:10px;background:#fff;font:inherit;box-sizing:border-box}\n.eco-tool select.eco-tool__input{appearance:none;padding-right:40px}\n.eco-tool__hint{font-size:.92em;opacity:.78;min-height:38px}\n.eco-tool__noteBox{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:12px;background:rgba(0,0,0,.02);min-height:44px}\n.eco-tool__row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}\n\n.eco-tool__actions{display:flex;gap:10px;margin-top:16px;align-items:center;flex-wrap:wrap}\n.eco-tool__btn{padding:10px 22px}\n.eco-tool__btn--ghost{background:transparent!important;border:1px solid rgba(0,0,0,.2)!important}\n.eco-tool__btn--ghost:hover,.eco-tool__btn--ghost:focus{background:rgba(0,0,0,.06)!important;border-color:rgba(0,0,0,.35)!important}\n.eco-tool__error{font-weight:600;min-height:1.2em;flex:1 1 240px}\n\n.eco-tool__result{margin-top:16px}\n.eco-tool__subtitle{margin:0 0 10px}\n.eco-tool__cards{display:grid;gap:10px;grid-template-columns:1fr}\n@media (min-width:860px){.eco-tool__cards{grid-template-columns:1fr 1fr}}\n.eco-tool__card{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:12px}\n.eco-tool__metric-label{opacity:.85;font-weight:600}\n.eco-tool__metric-value{font-size:1.6em;font-weight:800;margin-top:6px;line-height:1.1}\n.eco-tool__metric-sub{opacity:.85;margin-top:6px}\n.eco-tool__muted{opacity:.8}\n.eco-tool__note{margin-top:10px;opacity:.9}\n<\/style>\n\n<script>\n(function(){\n  const S=\"52b1a\";\n  const el=(id)=>document.getElementById(id+\"-\"+S);\n\n  const testEl=el(\"eco-vo2-test\");\n\n  \/\/ Cooper\n  const cooperWrap=el(\"eco-vo2-cooper-wrap\");\n  const cooperTip=el(\"eco-vo2-cooper-tip\");\n  const cooperDist=el(\"eco-vo2-cooper-dist\");\n\n  \/\/ Rockport\n  const rTimeWrap=el(\"eco-vo2-rock-time-wrap\");\n  const rMin=el(\"eco-vo2-rock-min\");\n  const rSec=el(\"eco-vo2-rock-sec\");\n  const rHrWrap=el(\"eco-vo2-rock-hr-wrap\");\n  const rHr=el(\"eco-vo2-rock-hr\");\n  const rAgeWrap=el(\"eco-vo2-rock-age-wrap\");\n  const rAge=el(\"eco-vo2-rock-age\");\n  const rSexWrap=el(\"eco-vo2-rock-sex-wrap\");\n  const rSex=el(\"eco-vo2-rock-sex\");\n  const rWWrap=el(\"eco-vo2-rock-weight-wrap\");\n  const rW=el(\"eco-vo2-rock-weight\");\n  const rFormula=el(\"eco-vo2-rock-formula-wrap\");\n\n  const calcBtn=el(\"eco-vo2-calc\");\n  const resetBtn=el(\"eco-vo2-reset\");\n  const errEl=el(\"eco-vo2-error\");\n\n  const resEl=el(\"eco-vo2-result\");\n  const outEl=el(\"eco-vo2-out\");\n  const methodEl=el(\"eco-vo2-method\");\n  const eqEl=el(\"eco-vo2-eq\");\n\n  function setError(msg){ errEl.textContent = msg || \"\"; }\n  function fmt(n,d){\n    if(!Number.isFinite(n)) return \"\u2014\";\n    return Number(n).toLocaleString(undefined,{maximumFractionDigits:d});\n  }\n\n  function showTest(){\n    const t = testEl.value;\n\n    const cooperOn = (t === \"cooper\");\n    cooperWrap.style.display = cooperOn ? \"flex\" : \"none\";\n    cooperTip.style.display = cooperOn ? \"flex\" : \"none\";\n\n    const rockOn = (t === \"rockport\");\n    rTimeWrap.style.display = rockOn ? \"flex\" : \"none\";\n    rHrWrap.style.display = rockOn ? \"flex\" : \"none\";\n    rAgeWrap.style.display = rockOn ? \"flex\" : \"none\";\n    rSexWrap.style.display = rockOn ? \"flex\" : \"none\";\n    rWWrap.style.display = rockOn ? \"flex\" : \"none\";\n    rFormula.style.display = rockOn ? \"flex\" : \"none\";\n\n    setError(\"\");\n    resEl.hidden = true;\n  }\n\n  function calculate(){\n    setError(\"\");\n    const t = testEl.value;\n\n    if(t === \"cooper\"){\n      const d = Number(cooperDist.value);\n      if(!Number.isFinite(d) || d <= 0){\n        setError(\"Enter a valid distance in meters for the 12-minute run.\");\n        resEl.hidden = true;\n        return;\n      }\n      \/\/ Cooper: VO2max = (distance - 504.9) \/ 44.73\n      const vo2 = (d - 504.9) \/ 44.73;\n\n      if(!Number.isFinite(vo2) || vo2 <= 0){\n        setError(\"Distance seems too low for a meaningful estimate. Check your input.\");\n        resEl.hidden = true;\n        return;\n      }\n\n      outEl.textContent = fmt(vo2,1);\n      methodEl.textContent = \"Cooper 12-minute run\";\n      eqEl.textContent = `VO\u2082max \u2248 (${fmt(d,0)} \u2212 504.9) \/ 44.73`;\n\n      resEl.hidden = false;\n      return;\n    }\n\n    \/\/ Rockport\n    const mm = Number(rMin.value);\n    const ss = Number(rSec.value);\n    const hr = Number(rHr.value);\n    const age = Number(rAge.value);\n    const kg = Number(rW.value);\n    const male = (rSex.value === \"male\") ? 1 : 0;\n\n    if(!Number.isFinite(mm) || mm < 0 || !Number.isFinite(ss) || ss < 0 || ss >= 60){\n      setError(\"Enter a valid time (mm:ss). Seconds must be 0\u201359.\");\n      resEl.hidden = true;\n      return;\n    }\n    const timeMin = mm + (ss\/60);\n    if(timeMin <= 0){\n      setError(\"Time must be greater than 0.\");\n      resEl.hidden = true;\n      return;\n    }\n    if(!Number.isFinite(hr) || hr <= 0){\n      setError(\"Enter a valid finish heart rate (bpm).\");\n      resEl.hidden = true;\n      return;\n    }\n    if(!Number.isFinite(age) || age <= 0){\n      setError(\"Enter a valid age.\");\n      resEl.hidden = true;\n      return;\n    }\n    if(!Number.isFinite(kg) || kg <= 0){\n      setError(\"Enter a valid body weight (kg).\");\n      resEl.hidden = true;\n      return;\n    }\n\n    const lb = kg * 2.2046226218;\n\n    \/\/ Rockport equation (as commonly published):\n    \/\/ VO2max = 132.853 - 0.0769*weight(lb) - 0.3877*age - 3.2649*time(min) - 0.1565*HR + 6.315*male\n    const vo2 = 132.853 - 0.0769*lb - 0.3877*age - 3.2649*timeMin - 0.1565*hr + 6.315*male;\n\n    if(!Number.isFinite(vo2) || vo2 <= 0){\n      setError(\"Inputs produce an unrealistic result. Check time\/HR\/weight values.\");\n      resEl.hidden = true;\n      return;\n    }\n\n    outEl.textContent = fmt(vo2,1);\n    methodEl.textContent = \"Rockport 1-mile walk\";\n    eqEl.textContent = `VO\u2082max \u2248 132.853 \u2212 0.0769\u00d7${fmt(lb,1)} \u2212 0.3877\u00d7${fmt(age,0)} \u2212 3.2649\u00d7${fmt(timeMin,2)} \u2212 0.1565\u00d7${fmt(hr,0)} + 6.315\u00d7${male}`;\n\n    resEl.hidden = false;\n  }\n\n  function reset(){\n    testEl.value = \"cooper\";\n\n    cooperDist.value = \"\";\n\n    rMin.value = \"\";\n    rSec.value = \"\";\n    rHr.value = \"\";\n    rAge.value = \"\";\n    rSex.value = \"male\";\n    rW.value = \"\";\n\n    setError(\"\");\n    resEl.hidden = true;\n    showTest();\n  }\n\n  testEl.addEventListener(\"change\", showTest);\n  calcBtn.addEventListener(\"click\", calculate);\n  resetBtn.addEventListener(\"click\", reset);\n\n  showTest();\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>VO\u2082max Estimate Calculator Estimate VO\u2082max from common field tests. Results are approximate and depend on effort, conditions, and measurement accuracy. Testmethod Cooper 12-minute runRockport 1-mile walk Choose the test you&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2452,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/bio-me.bio\/index.php?rest_route=\/wp\/v2\/pages\/2427"}],"collection":[{"href":"https:\/\/bio-me.bio\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bio-me.bio\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bio-me.bio\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bio-me.bio\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2427"}],"version-history":[{"count":1,"href":"https:\/\/bio-me.bio\/index.php?rest_route=\/wp\/v2\/pages\/2427\/revisions"}],"predecessor-version":[{"id":2428,"href":"https:\/\/bio-me.bio\/index.php?rest_route=\/wp\/v2\/pages\/2427\/revisions\/2428"}],"up":[{"embeddable":true,"href":"https:\/\/bio-me.bio\/index.php?rest_route=\/wp\/v2\/pages\/2452"}],"wp:attachment":[{"href":"https:\/\/bio-me.bio\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}