{"id":60621,"date":"2015-06-10T08:31:45","date_gmt":"2015-06-10T06:31:45","guid":{"rendered":"https:\/\/wpcalc.com\/?p=60621"},"modified":"2026-09-29T15:19:10","modified_gmt":"2026-09-29T12:19:10","slug":"child-gender-parent-blood-type","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/pregnancy-baby\/child-gender-parent-blood-type\/","title":{"rendered":"Child Gender by Parent Blood Type"},"content":{"rendered":"<p><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\">Baby Gender Predictor by Blood Type<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"60621\" data-favorite-title=\"Child Gender by Parent Blood Type\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/child-gender-parent-blood-type\/\" data-favorite-excerpt=\"Select numbers 1\u20134 for each parent to see the calculator\u2019s traditional boy-or-girl result. Parent blood types cannot predict a baby\u2019s sex, so use the result for entertainment only.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-pacifier\">\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\/pregnancy-baby\/child-gender-parent-blood-type\/\" method=\"POST\" class=\"calculator\" id=\"calculator-60621\" data-post=\"60621\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field\" id=\"input-1\"><label for=\"field-1\">Blood type father<\/label><div class=\"grid grid-cols-1\"><select id=\"field-1\" name=\"blood_type_father\"><option value=\"1\">1<\/option><option value=\"2\">2<\/option><option value=\"3\">3<\/option><option value=\"4\">4<\/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\" id=\"input-2\"><label for=\"field-2\">Blood type mother<\/label><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"blood_type_mother\"><option value=\"1\">1<\/option><option value=\"2\">2<\/option><option value=\"3\">3<\/option><option value=\"4\">4<\/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=\"60621\">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> Your Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>The sex of the child<\/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><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=\"60621\" 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\">1<\/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><br \/>\n<p>\r\n\t\r\n<\/p>\r\n<section class=\"note\" role=\"note\" aria-label=\"Disclaimer\">\r\n\t<strong class=\"note-title\">Disclaimer:<\/strong>\r\n\tThis calculator provides an estimated result based on the information you enter. It is intended for informational purposes only and should not be considered medical, legal, financial, or professional advice. Always consult a qualified expert for decisions related to your personal situation.\r\n<\/section><\/p>\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>Child Gender by Parent Blood Type 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\\[S = F + M, \\qquad \\text{Result} = \\begin{cases}\\text{Male}, &amp; S\\text{ is even} \\\\ \\text{Female}, &amp; S\\text{ is odd}\\end{cases}\\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(F\\) \u2014 the number selected for Blood type father (1\u20134).<\/li>\n<li>\\(M\\) \u2014 the number selected for Blood type mother (1\u20134).<\/li>\n<li>\\(S\\) \u2014 the sum of the two selected numbers.<\/li>\n<\/ul>\n<p>The calculator assigns \u201cMale\u201d to an even sum and \u201cFemale\u201d to an odd sum. This is a rule for producing a result, not a medically valid way to predict a child\u2019s sex.<\/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>Child Gender by Parent Blood Type \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> select 1 for Blood type father and 1 for Blood type mother.<\/p>\n<p>\\[S = 1 + 1 = 2\\]<\/p>\n<p>Because 2 is even, the rule returns \u201cMale.\u201d<\/p>\n<p><strong>Result:<\/strong> Male (an entertainment-only result, not a medical prediction).<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Choose a number from 1 to 4 in <strong>Blood type father<\/strong>.<\/li>\n<li>Choose a number from 1 to 4 in <strong>Blood type mother<\/strong>.<\/li>\n<li>Read <strong>The sex of the child<\/strong> result. It displays either \u201cMale\u201d or \u201cFemale\u201d according to whether the selected numbers add to an even or odd total.<\/li>\n<\/ol>\n<p>The fields display numbers rather than the familiar O, A, B, and AB labels. The calculator does not explain how those blood groups correspond to its numbered choices, so do not assume that a particular number represents your medical blood type. If you are unsure which number the site intends, treat the choices simply as numbers used by its rule.<\/p>\n<h2>What the result means<\/h2>\n<p>Despite its name, this calculator does not use a genetic test or a validated medical method. It adds two selected numbers and checks whether the sum is even or odd. Changing either choice by one changes the result; changing it by two leaves the result the same. For example, 1 and 2 produce an odd sum, while 1 and 3 produce an even sum. The rule does not mean that parents with the same blood type are more likely to have a boy or that parents with different types are more likely to have a girl.<\/p>\n<p>ABO blood types describe markers on red blood cells. A child inherits blood-group variants from their parents, but the parents\u2019 ABO types do not determine whether a pregnancy results in a boy or a girl. In typical chromosomal development, an egg contributes an X chromosome, while a fertilizing sperm contributes an X or a Y chromosome. Human sex development also has natural variations that this two-option result cannot represent.<\/p>\n<p>The result therefore says nothing reliable about an individual pregnancy. It should not be read as a probability, a diagnosis, or confirmation of fetal sex. \u201cGender\u201d is sometimes used casually in calculator names, but a person\u2019s gender identity cannot be predicted from their parents\u2019 blood types either.<\/p>\n<h2>Assumptions and practical limitations<\/h2>\n<ul>\n<li><strong>Only the selected numbers affect the answer.<\/strong> The rule does not consider ABO inheritance, Rh factor, pregnancy dates, family history, or test results.<\/li>\n<li><strong>There is no medical accuracy claim.<\/strong> An even sum is not evidence of a male fetus, and an odd sum is not evidence of a female fetus.<\/li>\n<li><strong>Do not make decisions based on this result.<\/strong> For questions about fetal development or what a prenatal test can show, speak with a qualified healthcare professional.<\/li>\n<\/ul>\n<p>Other tradition-based tools, such as the <a href=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/chinese-baby-gender-calculator\/\">Chinese Baby Gender Calculator<\/a> and the <a href=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/child-gender-rh-factor-parents\/\">Child Gender by Rh Factor of Parents Calculator<\/a>, are also for curiosity rather than medical prediction. If you need a practical pregnancy timeline instead, a <a href=\"https:\/\/wpcalc.com\/en\/pregnancy-baby\/gestational-age\/\">Gestational Age Calculator<\/a> estimates how far along a pregnancy is from the dates you enter; it does not determine fetal sex.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Select numbers 1\u20134 for each parent to see the calculator\u2019s traditional boy-or-girl result. Parent blood types cannot predict a baby\u2019s sex, so use the result for entertainment only.<\/p>\n","protected":false},"author":70,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[45],"tags":[49],"class_list":["post-60621","post","type-post","status-publish","format-standard","hentry","category-pregnancy-baby","tag-baby-gender-prediction"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/60621","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\/70"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=60621"}],"version-history":[{"count":4,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/60621\/revisions"}],"predecessor-version":[{"id":65678,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/60621\/revisions\/65678"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=60621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=60621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=60621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}