Max Heart Rate & Training Zones Calculator<\/title>\n <style>\n body {\n font-family: Arial, sans-serif;\n padding: 30px;\n background: #f4f4f4;\n color: #333;\n }\n\n h1 {\n text-align: center;\n color: #2c3e50;\n }\n\n .container {\n max-width: 500px;\n margin: 0 auto;\n background: #fff;\n padding: 20px;\n border-radius: 10px;\n box-shadow: 0 0 10px rgba(0,0,0,0.1);\n }\n\n label, select, input {\n display: block;\n width: 100%;\n margin-bottom: 15px;\n }\n\n button {\n width: 100%;\n padding: 10px;\n background-color: #3498db;\n color: #fff;\n font-size: 16px;\n border: none;\n border-radius: 5px;\n cursor: pointer;\n }\n\n button:hover {\n background-color: #2980b9;\n }\n\n table {\n width: 100%;\n margin-top: 20px;\n border-collapse: collapse;\n }\n\n th, td {\n padding: 10px;\n border: 1px solid #ccc;\n text-align: center;\n }\n\n th {\n background-color: #3498db;\n color: #fff;\n }\n\t.note {\n margin-top: 1rem;\n font-size: 0.875rem;\n color: var(--muted);\n }\n <\/style>\n<\/head>\n<body>\n \n <div class=\"container\">\n <label for=\"age\">Enter your age:<\/label>\n <input type=\"number\" id=\"age\" min=\"1\" required>\n\n <label for=\"gender\">Select your gender:<\/label>\n <select id=\"gender\">\n <option value=\"male\">Male<\/option>\n <option value=\"female\">Female<\/option>\n <\/select>\n\n <button onclick=\"calculateZones()\">Calculate Zones<\/button>\n\n <div id=\"results\"><\/div>\n\n<p class=\"note\">\n\t<b>Disclaimer:<\/b>\n\tOur calculators are designed to provide helpful estimates, but they are not a substitute for professional medical advice, diagnosis, or treatment. Please don\u2019t rely on these results alone when making health decisions. Always consult a qualified healthcare professional if you have concerns about your health. We cannot guarantee complete accuracy or suitability for every situation.\n\t<br><br>\n\t<b>Specific Note on Hormone Calculators:<\/b>\n\tEstimates for free and bioavailable testosterone are usually reliable, but may be inaccurate in certain situations\u2014such as during pregnancy or when treatments significantly raise DHT levels (for example, transdermal DHT, oral testosterone, or mesterolone therapy). In these cases, please consult your doctor before drawing conclusions from the results.\n\t<br><br>\n\t<b>Important Reminder:<\/b>\n\tDo not begin or change any supplements, medications, or therapies without first speaking to a healthcare provider. We are not responsible for any adverse effects, outcomes, or misuse of these tools.\n <\/p>\n <\/div>\n\n <script>\n function calculateZones() {\n const age = parseInt(document.getElementById('age').value);\n const gender = document.getElementById('gender').value;\n const resultsDiv = document.getElementById('results');\n\n if (!age || age < 1) {\n resultsDiv.innerHTML = '<p>Please enter a valid age.<\/p>';\n return;\n }\n\n \/\/ Max HR formulas\n \/\/const maxHR = gender === 'male' ? 208 - (0.7 * age) : 206 - (0.88 * age);\n const maxHR = gender === 'male' ? 220 - age : 220 - age;\n const zones = [\n { name: 'Zone 1', percent: [0.50, 0.60], purpose: 'Active recovery' },\n { name: 'Zone 2', percent: [0.60, 0.70], purpose: 'Aerobic base \/ Fat-burning zone' },\n { name: 'Zone 3', percent: [0.70, 0.80], purpose: 'Aerobic endurance' },\n { name: 'Zone 4', percent: [0.80, 0.90], purpose: 'Lactate threshold \/ Hard effort' },\n { name: 'Zone 5', percent: [0.90, 1.00], purpose: 'VO2 Max \/ Max effort (short bursts)' }\n ];\n\n let html = `\n <h2>Max HR: ${Math.round(maxHR)} bpm<\/h2>\n <table>\n <tr>\n <th>Zone<\/th>\n <th>HR Range (bpm)<\/th>\n <th>Purpose<\/th>\n <\/tr>\n `;\n\n zones.forEach(zone => {\n const lower = Math.round(zone.percent[0] * maxHR);\n const upper = Math.round(zone.percent[1] * maxHR);\n html += `\n <tr>\n <td>${zone.name}<\/td>\n <td>${lower} \u2013 ${upper}<\/td>\n <td>${zone.purpose}<\/td>\n <\/tr>\n `;\n });\n\n html += '<\/table>';\n resultsDiv.innerHTML = html;\n }\n <\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Max Heart Rate & Training Zones Calculator Enter your age: Select your gender: MaleFemale Calculate Zones Disclaimer: Our calculators are […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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{"id":92,"date":"2025-09-05T09:31:30","date_gmt":"2025-09-05T13:31:30","guid":{"rendered":"https:\/\/www.vmrfit.com\/?page_id=92"},"modified":"2026-01-01T12:14:31","modified_gmt":"2026-01-01T17:14:31","slug":"max-heart-rate-zone-calculator","status":"publish","type":"page","link":"https:\/\/www.vmrfit.com\/index.php\/max-heart-rate-zone-calculator\/","title":{"rendered":"Max Heart Rate & Zone Calculator"},"content":{"rendered":"\n\n\n\n \n \n Max Heart Rate & Training Zones Calculator<\/title>\n <style>\n body {\n font-family: Arial, sans-serif;\n padding: 30px;\n background: #f4f4f4;\n color: #333;\n }\n\n h1 {\n text-align: center;\n color: #2c3e50;\n }\n\n .container {\n max-width: 500px;\n margin: 0 auto;\n background: #fff;\n padding: 20px;\n border-radius: 10px;\n box-shadow: 0 0 10px rgba(0,0,0,0.1);\n }\n\n label, select, input {\n display: block;\n width: 100%;\n margin-bottom: 15px;\n }\n\n button {\n width: 100%;\n padding: 10px;\n background-color: #3498db;\n color: #fff;\n font-size: 16px;\n border: none;\n border-radius: 5px;\n cursor: pointer;\n }\n\n button:hover {\n background-color: #2980b9;\n }\n\n table {\n width: 100%;\n margin-top: 20px;\n border-collapse: collapse;\n }\n\n th, td {\n padding: 10px;\n border: 1px solid #ccc;\n text-align: center;\n }\n\n th {\n background-color: #3498db;\n color: #fff;\n }\n\t.note {\n margin-top: 1rem;\n font-size: 0.875rem;\n color: var(--muted);\n }\n <\/style>\n<\/head>\n<body>\n \n <div class=\"container\">\n <label for=\"age\">Enter your age:<\/label>\n <input type=\"number\" id=\"age\" min=\"1\" required>\n\n <label for=\"gender\">Select your gender:<\/label>\n <select id=\"gender\">\n <option value=\"male\">Male<\/option>\n <option value=\"female\">Female<\/option>\n <\/select>\n\n <button onclick=\"calculateZones()\">Calculate Zones<\/button>\n\n <div id=\"results\"><\/div>\n\n<p class=\"note\">\n\t<b>Disclaimer:<\/b>\n\tOur calculators are designed to provide helpful estimates, but they are not a substitute for professional medical advice, diagnosis, or treatment. Please don\u2019t rely on these results alone when making health decisions. Always consult a qualified healthcare professional if you have concerns about your health. We cannot guarantee complete accuracy or suitability for every situation.\n\t<br><br>\n\t<b>Specific Note on Hormone Calculators:<\/b>\n\tEstimates for free and bioavailable testosterone are usually reliable, but may be inaccurate in certain situations\u2014such as during pregnancy or when treatments significantly raise DHT levels (for example, transdermal DHT, oral testosterone, or mesterolone therapy). In these cases, please consult your doctor before drawing conclusions from the results.\n\t<br><br>\n\t<b>Important Reminder:<\/b>\n\tDo not begin or change any supplements, medications, or therapies without first speaking to a healthcare provider. We are not responsible for any adverse effects, outcomes, or misuse of these tools.\n <\/p>\n <\/div>\n\n <script>\n function calculateZones() {\n const age = parseInt(document.getElementById('age').value);\n const gender = document.getElementById('gender').value;\n const resultsDiv = document.getElementById('results');\n\n if (!age || age < 1) {\n resultsDiv.innerHTML = '<p>Please enter a valid age.<\/p>';\n return;\n }\n\n \/\/ Max HR formulas\n \/\/const maxHR = gender === 'male' ? 208 - (0.7 * age) : 206 - (0.88 * age);\n const maxHR = gender === 'male' ? 220 - age : 220 - age;\n const zones = [\n { name: 'Zone 1', percent: [0.50, 0.60], purpose: 'Active recovery' },\n { name: 'Zone 2', percent: [0.60, 0.70], purpose: 'Aerobic base \/ Fat-burning zone' },\n { name: 'Zone 3', percent: [0.70, 0.80], purpose: 'Aerobic endurance' },\n { name: 'Zone 4', percent: [0.80, 0.90], purpose: 'Lactate threshold \/ Hard effort' },\n { name: 'Zone 5', percent: [0.90, 1.00], purpose: 'VO2 Max \/ Max effort (short bursts)' }\n ];\n\n let html = `\n <h2>Max HR: ${Math.round(maxHR)} bpm<\/h2>\n <table>\n <tr>\n <th>Zone<\/th>\n <th>HR Range (bpm)<\/th>\n <th>Purpose<\/th>\n <\/tr>\n `;\n\n zones.forEach(zone => {\n const lower = Math.round(zone.percent[0] * maxHR);\n const upper = Math.round(zone.percent[1] * maxHR);\n html += `\n <tr>\n <td>${zone.name}<\/td>\n <td>${lower} \u2013 ${upper}<\/td>\n <td>${zone.purpose}<\/td>\n <\/tr>\n `;\n });\n\n html += '<\/table>';\n resultsDiv.innerHTML = html;\n }\n <\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Max Heart Rate & Training Zones Calculator Enter your age: Select your gender: MaleFemale Calculate Zones Disclaimer: Our calculators are […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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