{"id":66653,"date":"2026-10-12T09:03:10","date_gmt":"2026-10-12T06:03:10","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=66653"},"modified":"2026-10-12T09:03:10","modified_gmt":"2026-10-12T06:03:10","slug":"qsofa-score-calculator","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/medical\/qsofa-score-calculator\/","title":{"rendered":"qSOFA Score Calculator"},"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\">Check Sepsis Risk from Respiratory Rate, Blood Pressure and Mental Status<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"66653\" data-favorite-title=\"qSOFA Score\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/medical\/qsofa-score-calculator\/\" data-favorite-excerpt=\"Quickly compute the qSOFA score from respiratory rate, systolic blood pressure and mental status to screen for sepsis risk in patients with suspected infection. Enter the three bedside values and get the score and risk category instantly.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-flask\">\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\/medical\/qsofa-score-calculator\/\" method=\"POST\" class=\"calculator\" id=\"calculator-66653\" data-post=\"66653\"><fieldset class=\"fieldset-input is-2\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Respiratory rate<\/label><div class=\"term\">RR<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"respiratory_rate\" id=\"field-1\" aria-describedby=\"calc-unit-1 calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"1\" max=\"80\" value=\"24\"\/><div class=\"unit\" id=\"calc-unit-1\">breaths\/min<\/div><small id=\"calc-info-1\">1 point if 22 breaths\/min or faster<\/small><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">Systolic blood pressure<\/label><div class=\"term\">SBP<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"systolic_blood_pressure\" id=\"field-2\" aria-describedby=\"calc-unit-2 calc-info-2\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"20\" max=\"300\" value=\"95\"\/><div class=\"unit\" id=\"calc-unit-2\">mmHg<\/div><small id=\"calc-info-2\">1 point if 100 mmHg or lower<\/small><\/div><div class=\"field\" id=\"input-3\"><label for=\"field-3\">Altered mental status<\/label><div class=\"grid grid-cols-1\"><select id=\"field-3\" name=\"altered_mental_status\"><option value=\"no\">No (GCS 15, fully alert)<\/option><option value=\"yes\" selected>Yes (GCS below 15, any confusion)<\/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=\"66653\">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 qSOFA Result<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>qSOFA score<\/span><span class=\"result-term\">qSOFA<\/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 is-column\" id=\"output-2\"><span class=\"field-title\"><span>Risk category<\/span><\/span><span class=\"field-value\" id=\"result-2\"><\/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-3\"><span class=\"field-title\"><span>What this means<\/span><\/span><span class=\"field-value\" id=\"result-3\"><\/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=\"66653\" 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<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>qSOFA Score 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\\[ qSOFA = \\mathbb{1}(RR \\ge 22) + \\mathbb{1}(SBP \\le 100) + \\mathbb{1}(GCS &lt; 15) \\]<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(RR\\) \u2014 respiratory rate in breaths per minute; 1 point if \\(RR \\ge 22\\)<\/li>\n<li>\\(SBP\\) \u2014 systolic blood pressure in mmHg; 1 point if \\(SBP \\le 100\\)<\/li>\n<li>\\(GCS\\) \u2014 Glasgow Coma Scale; 1 point for any acute altered mentation, i.e. \\(GCS &lt; 15\\)<\/li>\n<li>\\(\\mathbb{1}(\\cdot)\\) \u2014 indicator function, equal to 1 when the condition is true and 0 otherwise<\/li>\n<\/ul>\n<p>The formula adds one point for each of the three bedside criteria that is met, giving a total score from 0 to 3. A score of 2 or more flags a higher risk of poor outcomes in patients with suspected infection.<\/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>qSOFA Score \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<p>{example}<\/p>\n<p><strong>Example:<\/strong> a patient with suspected infection has a respiratory rate of 24 breaths\/min, a systolic blood pressure of 95 mmHg and is confused (GCS below 15).<\/p>\n<p>\\[ \\mathbb{1}(24 \\ge 22) + \\mathbb{1}(95 \\le 100) + \\mathbb{1}(GCS &lt; 15) = 1 + 1 + 1 = 3 \\]<\/p>\n<p><strong>Result:<\/strong> qSOFA score = 3 of 3, which falls into the higher-risk category (qSOFA \u2265 2). All three criteria are met, so the patient should be assessed promptly for possible sepsis.<\/p>\n<p>{\/example}<\/p>\n\r\n<\/section>\n<h2>How to Use the qSOFA Calculator<\/h2>\n<ol>\n<li>Enter the patient's <strong>Respiratory rate<\/strong> in breaths per minute (1\u201380).<\/li>\n<li>Enter the <strong>Systolic blood pressure<\/strong> in mmHg (20\u2013300).<\/li>\n<li>Select whether there is <strong>Altered mental status<\/strong>: choose \"Yes (GCS below 15, any confusion)\" for any acute change in mentation, or \"No (GCS 15, fully alert)\" if the patient is fully alert.<\/li>\n<li>Read the <strong>qSOFA score<\/strong> (0\u20133), the <strong>Risk category<\/strong> and the interpretation of each criterion in the result panel.<\/li>\n<\/ol>\n<h2>What Is the qSOFA Score?<\/h2>\n<p>The quick Sequential Organ Failure Assessment (qSOFA) is a bedside screening tool introduced by the Third International Consensus Definitions for Sepsis and Septic Shock (Sepsis-3, Singer et al., JAMA 2016). It was designed to help clinicians identify, without any laboratory tests, which patients with suspected infection are at higher risk of a poor outcome, such as prolonged ICU stay or in-hospital mortality.<\/p>\n<p>The score uses three simple criteria: a respiratory rate of 22 breaths\/min or faster, a systolic blood pressure of 100 mmHg or lower, and any acute alteration in mental status. Each criterion that is met adds one point. All three can be assessed within minutes at the bedside or even in a pre-hospital setting, which is exactly what makes the tool useful for early triage.<\/p>\n<p>A qSOFA score of 2 or more should prompt further evaluation for organ dysfunction \u2014 typically a full SOFA score, blood cultures, lactate measurement and, when sepsis is suspected, early treatment following local protocols. A score below 2 indicates lower risk, but it does not rule out sepsis: qSOFA is a risk screen, not a diagnostic test. If clinical concern persists despite a low score, additional workup is still appropriate.<\/p>\n<p>If you need to assess the mental status criterion in detail, the <a href=\"https:\/\/wpcalc.com\/en\/medical\/glasgow-coma-scale-calculator\/\">Glasgow Coma Scale calculator<\/a> helps determine the exact GCS. For patients with pneumonia, the <a href=\"https:\/\/wpcalc.com\/en\/medical\/curb-65-score-calculator\/\">CURB-65 score<\/a> is a related bedside tool that estimates severity and mortality risk, and the <a href=\"https:\/\/wpcalc.com\/en\/medical\/mean-arterial-pressure\/\">mean arterial pressure calculator<\/a> can give a fuller picture of hemodynamic status.<\/p>\n<h2>Limitations and Practical Notes<\/h2>\n<ul>\n<li><strong>Not a diagnosis.<\/strong> qSOFA identifies patients at higher risk of poor outcomes; it does not diagnose sepsis. Sepsis is defined by suspected infection plus organ dysfunction measured by the full SOFA score, which requires laboratory data.<\/li>\n<li><strong>Lower sensitivity in some settings.<\/strong> Later analyses showed qSOFA is more specific than sensitive \u2014 a low score does not exclude sepsis, especially in older patients or those on medications that mask tachypnea or hypotension (e.g. beta-blockers).<\/li>\n<li><strong>Acute change matters.<\/strong> The mental status criterion refers to any <em>acute<\/em> change from the patient's baseline. Chronic confusion (e.g. dementia) without acute worsening does not count as altered mentation.<\/li>\n<li><strong>Apply only when infection is suspected.<\/strong> The score is validated for patients with suspected infection; using it in unselected patients leads to misleading results.<\/li>\n<li><strong>Single time point.<\/strong> Values can change quickly. Repeating the assessment over time is often more informative than a single measurement.<\/li>\n<li>This calculator is for informational and educational purposes only and is not a substitute for professional medical judgment.<\/li>\n<\/ul>\n<h2>qSOFA Criteria Reference Table<\/h2>\n<table>\n<thead>\n<tr>\n<th>Criterion<\/th>\n<th>Threshold<\/th>\n<th>Points<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Respiratory rate (RR)<\/td>\n<td>\u2265 22 breaths\/min<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>Systolic blood pressure (SBP)<\/td>\n<td>\u2264 100 mmHg<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>Altered mental status (GCS)<\/td>\n<td>GCS &lt; 15 \/ acute change<\/td>\n<td>1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Total score ranges from 0 to 3. A score of 2 or more (\u2265 2) indicates higher risk and should trigger further sepsis evaluation; a score of 0 or 1 indicates lower risk but does not exclude infection or sepsis.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quickly compute the qSOFA score from respiratory rate, systolic blood pressure and mental status to screen for sepsis risk in patients with suspected infection. Enter the three bedside values and get the score and risk category instantly.<\/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":[8],"tags":[50],"class_list":["post-66653","post","type-post","status-publish","format-standard","hentry","category-medical","tag-diagnostics"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66653","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=66653"}],"version-history":[{"count":1,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66653\/revisions"}],"predecessor-version":[{"id":66654,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66653\/revisions\/66654"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=66653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=66653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=66653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}