{"id":31039,"date":"2025-05-27T11:27:58","date_gmt":"2025-05-27T09:27:58","guid":{"rendered":"https:\/\/gravida.com\/ovulation-calculator\/"},"modified":"2026-04-11T13:18:05","modified_gmt":"2026-04-11T11:18:05","slug":"ovulation-calculator","status":"publish","type":"page","link":"https:\/\/gravida.com\/en\/ovulation-calculator\/","title":{"rendered":"Ovulation Calculator"},"content":{"rendered":"\n<div class=\"wp-block-group alignfull has-base-background-color has-background has-global-padding is-layout-constrained wp-container-core-group-is-layout-3f3c29c8 wp-block-group-is-layout-constrained\" style=\"min-height:60vh;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-columns alignwide are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-68502207 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-cover is-light\" style=\"border-radius:21px\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"666\" class=\"wp-block-cover__image-background wp-image-28218\" alt=\"\" src=\"https:\/\/gravida.com\/wp-content\/uploads\/2025\/05\/imagen-fertilidad-optimizada-web.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/gravida.com\/wp-content\/uploads\/2025\/05\/imagen-fertilidad-optimizada-web.jpg 1000w, https:\/\/gravida.com\/wp-content\/uploads\/2025\/05\/imagen-fertilidad-optimizada-web-300x200.jpg 300w, https:\/\/gravida.com\/wp-content\/uploads\/2025\/05\/imagen-fertilidad-optimizada-web-768x511.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-large-font-size\"><\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<h1 class=\"wp-block-heading\">Free online ovulation calculator<\/h1>\n\n\n\n<p class=\"has-contrast-color has-text-color has-link-color has-large-font-size wp-elements-1c8432f4dcb4ccd1d4a6df65d29a2b0b\">Discover your fertile days and improve your chances of pregnancy.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-accent-2-background-color has-background wp-element-button\" href=\"#calculadora-ovulacion\">Ovulation calculator<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-content-justification-center is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\" id=\"calculadora-ovulacion\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-6686a318 wp-block-group-is-layout-constrained wp-container-1 is-position-sticky\" style=\"margin-top:0;padding-right:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\">\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/chart.js\"><\/script>\n<script>\ndocument.addEventListener(\"DOMContentLoaded\", function(){\n  const form = document.getElementById('ovulation-form');\n  let ovulationChart;\n\n  form && form.addEventListener('submit', function(e){\n    e.preventDefault();\n\n    const lastPeriod = document.getElementById('last-period').value;\n    const cycleLength = parseInt(document.getElementById('cycle-length').value, 10);\n\n    if(!lastPeriod || !cycleLength) return;\n\n    const lpDate = new Date(lastPeriod);\n    const ovulationDay = new Date(lpDate.getTime());\n    ovulationDay.setDate(lpDate.getDate() + cycleLength - 14);\n\n    \/\/ Ventana f\u00e9rtil: 5 d\u00edas antes y el propio d\u00eda de ovulaci\u00f3n\n    const fertileStart = new Date(ovulationDay.getTime());\n    fertileStart.setDate(ovulationDay.getDate() - 5);\n\n    function formatDate(date) {\n      return date.toLocaleDateString('es-ES', {day: '2-digit', month: '2-digit', year: 'numeric'});\n    }\n\n    document.getElementById('ovulation-day').textContent = formatDate(ovulationDay);\n    document.getElementById('fertile-window').textContent = `${formatDate(fertileStart)} a ${formatDate(ovulationDay)}`;\n    document.getElementById('ovulation-result').style.display = 'block';\n\n    \/\/ --- Chart.js ---\n    \/\/ Crea un array de colores: d\u00edas normales, f\u00e9rtiles y ovulaci\u00f3n\n    const days = [];\n    const labels = [];\n    for(let i=0; i<cycleLength; i++) {\n      const day = new Date(lpDate.getTime());\n      day.setDate(lpDate.getDate() + i);\n      labels.push(day.getDate() + '\/' + (day.getMonth()+1));\n      \/\/ Ventana f\u00e9rtil\n      if(day >= fertileStart && day < ovulationDay) {\n        days.push('#fdb6cb'); \/\/ Color f\u00e9rtil\n      } else if(day.getTime() === ovulationDay.getTime()) {\n        days.push('#ac0034'); \/\/ D\u00eda de ovulaci\u00f3n\n      } else {\n        days.push('#f7e8ed'); \/\/ D\u00edas normales\n      }\n    }\n    \/\/ Dataset con valor 1 para cada d\u00eda (es solo para pintar el arco)\n    const data = new Array(cycleLength).fill(1);\n\n    \/\/ Destruye gr\u00e1fico anterior si existe\n    if (ovulationChart) {\n      ovulationChart.destroy();\n    }\n    const ctx = document.getElementById('ovulation-chart').getContext('2d');\n    ovulationChart = new Chart(ctx, {\n      type: 'doughnut',\n      data: {\n        labels: labels,\n        datasets: [{\n          data: data,\n          backgroundColor: days,\n          borderWidth: 1,\n          borderColor: '#fff'\n        }]\n      },\n      options: {\n        cutout: '70%',\n        plugins: {\n          legend: { display: false },\n          tooltip: {\n            callbacks: {\n              label: function(context) {\n                const dayNum = context.dataIndex + 1;\n                let txt = `D\u00eda ${dayNum}`;\n                if (days[context.dataIndex] === '#ac0034') txt += ' (Ovulaci\u00f3n)';\n                else if (days[context.dataIndex] === '#fdb6cb') txt += ' (F\u00e9rtil)';\n                return txt;\n              }\n            }\n          }\n        }\n      }\n    });\n  });\n});\n\n<\/script>\n\n<div class=\"ovulation-calculator\">\n  <h2>Ovulation calculator<\/h2>\n  <form id=\"ovulation-form\">\n     <label>\n First day of your last menstruation:\n      <input type=\"date\" id=\"last-period\" required=\"\">\n    <\/label>\n    <label>\n Usual cycle length (days):\n      <input type=\"number\" id=\"cycle-length\" min=\"21\" max=\"40\" value=\"28\" required=\"\">\n    <\/label>\n    <button type=\"submit\">Calculate<\/button>\n  <\/form>\n  <div id=\"ovulation-result\" style=\"display:none;\">\n    <canvas id=\"ovulation-chart\" width=\"300\" height=\"300\" style=\"max-width:100%; margin: 0 auto; display:block;\"><\/canvas>\n    <div class=\"ovulation-summary\">\n      <p><strong>Estimated ovulation day:<\/strong> <span id=\"ovulation-day\"><\/span><\/p>\n      <p><strong>Fertile window:<\/strong> <span id=\"fertile-window\"><\/span><\/p>\n      <p class=\"explanation\">\n  Remember that the fertile window covers the 5 days prior to and the day of ovulation.<br>  If you have irregular cycles, the calculations may vary.\n      <\/p>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group tips-title has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\"><\/div>\n\n\n\n<div class=\"tips-title\">\n  <h2>10 tips to increase your chances of pregnancy<\/h2>\n<\/div>\n<div class=\"tips-description\">\n  Follow these tips, recommended by specialists, to maximize your chances of conceiving naturally and healthily.\n<\/div>\n\n<div class=\"tips-list\">\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\ud83d\udcc5<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Know your menstrual cycle<\/strong><\/div>\n      <div class=\"tip-text\">Keep track of your cycles and use the ovulation calculator to identify your most fertile days.<\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\u2764\ufe0f<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Sexual intercourse during the fertile window<\/strong><\/div>\n      <div class=\"tip-text\">Try to have sexual intercourse every other day, especially in the 5 days prior to and on the day of ovulation.<\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\ud83e\udd57<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Balanced diet<\/strong><\/div>\n      <div class=\"tip-text\">A diet rich in fruits, vegetables, and omega-3 promotes fertility.<\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\ud83d\udead<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Avoid tobacco, alcohol, and drugs<\/strong><\/div>\n      <div class=\"tip-text\">These factors negatively affect both female and male fertility.<\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\u2696\ufe0f<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Maintain a healthy weight<\/strong><\/div>\n      <div class=\"tip-text\">Being overweight or underweight can alter ovulation and make pregnancy difficult.<\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\ud83e\uddd8\u200d\u2640\ufe0f<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Reduce stress<\/strong><\/div>\n      <div class=\"tip-text\">Chronic stress affects hormonal balance. Try relaxation techniques like yoga or mindfulness. <\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\ud83c\udfc3\u200d\u2640\ufe0f<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Moderate exercise<\/strong><\/div>\n      <div class=\"tip-text\">Stay active, but avoid excessive intense exercise.<\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\ud83d\udc69\u200d\u2695\ufe0f<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Gynecological check-ups<\/strong><\/div>\n      <div class=\"tip-text\">Consult with a specialist to rule out problems and receive personalized advice.<\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\ud83d\udc8a<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Control of diseases and treatments<\/strong><\/div>\n      <div class=\"tip-text\">Properly manage chronic diseases and consult about medications that may affect fertility.<\/div>\n    <\/div>\n  <\/div>\n  <div class=\"tip-item\">\n    <span class=\"tip-icon\">\ud83d\udca7<\/span>\n    <div class=\"tip-content\">\n      <div class=\"tip-title\"><strong>Avoid conventional lubricants<\/strong><\/div>\n      <div class=\"tip-text\">Some lubricants can hinder sperm passage. Use fertility-friendly options. <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<div class=\"tips-consult\">\n  <strong>Have you been trying for several months without success?<\/strong>  \n  Don't hesitate to consult us. Our medical team can help you identify the causes and propose a personalized treatment to fulfill your desire to become a mother. \n<\/div>\n\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Request a first visit without commitment<\/h3>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f30963-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"30963\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/en\/wp-json\/wp\/v2\/pages\/31039#wpcf7-f30963-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Contact form\" novalidate=\"novalidate\" data-status=\"init\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"30963\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.5\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"en_US\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f30963-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/><input type=\"hidden\" name=\"_wpcf7dtx_version\" value=\"5.0.5\" \/>\n<\/fieldset>\n<style>\nul.conditions {padding-left:15px}\nul.conditions li{list-style:number;font-size: 1rem;}\n<\/style>\n<ul class=\"conditions\">\n\t<li>\n\t\t<p>Specialist doctor visit\n\t\t<\/p>\n\t<\/li>\n\t<li class=\"has-tooltip\" data-tooltip=\"Una evaluaci\u00f3n de la reserva ov\u00e1rica y un seminograma en casos de pareja masculina.\">\n\t\t<p>Fertility study\n\t\t<\/p>\n\t<\/li>\n\t<li>\n\t\t<p>Medical visit for results and diagnostic guidance\n\t\t<\/p>\n\t<\/li>\n<\/ul>\n<div class=\"formpro\">\n\t<div class=\"full\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Full name\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"telefono\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Phone\" value=\"\" type=\"tel\" name=\"telefono\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Email\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"textarea\"><textarea cols=\"40\" rows=\"10\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" placeholder=\"Comment\" name=\"textarea\"><\/textarea><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"quiz-867\"><label><span class=\"wpcf7-quiz-label\">What is the result of 5 + 2?<\/span> <input size=\"40\" class=\"wpcf7-form-control wpcf7-quiz\" autocomplete=\"off\" aria-required=\"true\" aria-invalid=\"false\" type=\"text\" name=\"quiz-867\" \/><\/label><input type=\"hidden\" name=\"_wpcf7_quiz_answer_quiz-867\" value=\"72ba8ed8a83840b667ba1be5377e6592\" \/><\/span><br \/>\n\t\t<span class=\"wpcf7-form-control-wrap webpro\" data-name=\"webpro\"><input type=\"hidden\" name=\"webpro\" class=\"wpcf7-form-control wpcf7-hidden wpcf7dtx wpcf7dtx-hidden\" aria-invalid=\"false\"><\/span>\n\t\t<\/p>\n\t\t<div class=\"legal\">\n\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"acceptance-201\"><span class=\"wpcf7-form-control wpcf7-acceptance\"><span class=\"wpcf7-list-item\"><label><input type=\"checkbox\" name=\"acceptance-201\" value=\"1\" aria-invalid=\"false\" \/><span class=\"wpcf7-list-item-label\">I accept the<button type=\"button\" style=\"border:0;background:transparent;\" id=\"show-privacy-modal\">terms of use and privacy policy<\/button><\/span><\/label><\/span><\/span><\/span><br \/>\n<input type=\"hidden\" id=\"gclid_field\" name=\"gclid_field\" value=\"\" \/>\n\t\t\t<\/p>\n\t\t<\/div>\n\t\t<div class=\"buttonsend\">\n\t\t\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner wp-block-button__link\" type=\"submit\" value=\"Send\" \/>\n\t\t\t<\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n<div id=\"privacy-modal\" style=\"display:none; position:fixed; z-index:9999; left:0; top:0; width:100vw; height:100vh; background:rgba(0,0,0,0.6);\">\n\t<div style=\"background:#fff; max-width:500px; margin:80px auto; padding:30px; border-radius:12px; position:relative;\">\n\t\t<p><button id=\"close-privacy-modal\" style=\"position:absolute; top:10px; right:16px; font-size:20px; background:none; border:none; cursor:pointer;\">\u00d7<\/button>\n\t\t<\/p>\n\t\t<h4 class=\"h2\">Privacy Policy (Summary)\n\t\t<\/h4>\n\t\t<p><br \/>\nAt Gravida, we protect your personal data in accordance with GDPR and current regulations. Your data will only be used to respond to your inquiry and will not be shared with third parties. You can exercise your rights of access, rectification, and deletion by writing to gravida@gravidabcn.com.<br \/>\n<a href=\"\/politica-privacidad\" target=\"_blank\" rel=\"noopener\">View full policy<\/a>\n\t\t<\/p>\n\t<\/div>\n<\/div><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Free online ovulation calculator Discover your fertile days and improve your chances of pregnancy. Ovulation calculator First day of your last menstruation: Usual cycle length (days): Calculate Estimated ovulation day: Fertile window: Remember that the fertile window covers the 5 days prior to and the day of ovulation. If you have irregular cycles, the calculations [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-no-title","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-31039","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ovulation Calculator - Gravida<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gravida.com\/en\/ovulation-calculator\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ovulation Calculator - Gravida\" \/>\n<meta property=\"og:description\" content=\"Free online ovulation calculator Discover your fertile days and improve your chances of pregnancy. Ovulation calculator First day of your last menstruation: Usual cycle length (days): Calculate Estimated ovulation day: Fertile window: Remember that the fertile window covers the 5 days prior to and the day of ovulation. 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Ovulation calculator First day of your last menstruation: Usual cycle length (days): Calculate Estimated ovulation day: Fertile window: Remember that the fertile window covers the 5 days prior to and the day of ovulation. 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