Convert your raw percentage correct or wrong answers on the latest practice form using our NBME 31 Score Conversion Calculator. Hitting a passing score on USMLE Step 1 requires reaching a 3-digit score of 196, which on Form 31 corresponds to approximately 65% correct (no more than 70 wrong answers out of 200).

As the newest assessment form released for 2026 test-takers, NBME 31 is the most up-to-date representation of the actual USMLE Step 1 blueprint. The questions feature longer, vaguer vignettes that closely mirror the real exam’s layout and time pressure. Reviewing Form 31 is critical because it highlights the exact organ systems, communications, and public health sciences currently emphasized by the test writers.

`; const win = window.open('', '_blank'); if (!win) { alert('⚠️ Popup blocked. Please allow popups to download PDF.'); return; } win.document.write(html); win.document.close(); win.focus(); setTimeout(() => win.print(), 500); }emailGateForm.addEventListener('submit', async e => { e.preventDefault(); if (!calcData31) { alert('⚠️ Please calculate your score first!'); return; } const name = document.getElementById('userName31').value.trim(); const email = document.getElementById('userEmail31').value.trim(); const type = document.getElementById('studentType31').value; const examDate = document.getElementById('examDate31').value; const weakAreas = getWeakAreas(); if (!name || !email || !type) { alert('⚠️ Please fill all required fields!'); return; } savedUserName31 = name; submitEmailBtn.disabled = true; submitEmailBtn.innerHTML = ' Saving & Sending Email...'; try { const fd = new FormData(); fd.append('action', 'nbme_save_user_result'); fd.append('user_name', name); fd.append('user_email', email); fd.append('student_type', type); fd.append('nbme_version', 'NBME 31'); fd.append('exam_type', 'Step1'); fd.append('percentage_correct', calcData31.pct); fd.append('wrong_answers', calcData31.wrong); fd.append('predicted_score', calcData31.score); fd.append('pass_probability', calcData31.prob); fd.append('exam_date', examDate || ''); fd.append('weak_areas', weakAreas.join(', ')); const response = await fetch(AJAX_URL, { method: 'POST', body: fd }); const data = await response.json(); if (data.success) { emailSubmitted31 = true; resultsBlur.classList.remove('blur-content'); emailGateOverlay.classList.remove('active'); generatePDF(name, calcData31.score, calcData31.pct, calcData31.wrong, calcData31.prob); } else { throw new Error(data.data?.message || 'Failed to save'); } } catch(err) { console.error(err); alert('⚠️ Error saving score. Please try again.'); } finally { submitEmailBtn.disabled = false; submitEmailBtn.innerHTML = ' View My NBME 31 Results'; } });function buildMsg() { if (!calcData31) return ''; return encodeURIComponent(`🎯 My NBME 31 Step 1 Score (Newest 2026 Form)\n\n📋 NBME Form: NBME 31\n🎯 Predicted Score: ${calcData31.score}\n📊 Accuracy: ${calcData31.pct}%\n❌ Wrong: ${calcData31.wrong}/200\n✅ Pass Probability: ${calcData31.prob}%\n\nCalculate yours: ${window.location.href}`); }document.getElementById('shareWhatsApp31').addEventListener('click', () => { if (!calcData31) return alert('⚠️ Calculate first!'); window.open(`https://wa.me/?text=${buildMsg()}`, '_blank'); }); document.getElementById('shareFacebook31').addEventListener('click', () => window.open(`https://www.facebook.com/sharer/sharer.php?u=${encodeURIComponent(window.location.href)}`, '_blank')); document.getElementById('shareTwitter31').addEventListener('click', () => { if (!calcData31) return; window.open(`https://twitter.com/intent/tweet?text=${encodeURIComponent(`🎯 My NBME 31 Step 1 Score: ${calcData31.score} | Pass Probability: ${calcData31.prob}% | Newest 2026 Form`)}&url=${encodeURIComponent(window.location.href)}`, '_blank'); }); document.getElementById('shareInstagram31').addEventListener('click', () => { if (!calcData31) return; alert(`📱 To share on Instagram:\n1. Screenshot your NBME 31 results\n2. Open Instagram\n3. Create a new Story or Post\n\nYour NBME 31 Score: ${calcData31.score}`); }); document.getElementById('downloadPDF31').addEventListener('click', () => { if (!calcData31) return alert('⚠️ Calculate first!'); if (!emailSubmitted31) return alert('⚠️ Please submit your email first!'); generatePDF(savedUserName31 || 'Medical Student', calcData31.score, calcData31.pct, calcData31.wrong, calcData31.prob); });resetBtn.addEventListener('click', () => { pctCorrect.value = ''; wrongCount.value = ''; resultsCol.classList.add('hidden'); shareSection.classList.add('hidden'); resultsBlur.classList.remove('blur-content'); emailGateOverlay.classList.remove('active'); calcData31 = null; });emailGateClose.addEventListener('click', () => { emailGateOverlay.classList.remove('active'); resultsBlur.classList.remove('blur-content'); }); emailGateOverlay.addEventListener('click', e => { if (e.target === emailGateOverlay) { emailGateOverlay.classList.remove('active'); resultsBlur.classList.remove('blur-content'); } });console.log('✅ NBME 31 Calculator Loaded'); })();

The Honest Problem With Form 31 — And Why It Does Not Matter as Much as You Think

Every NBME score conversion formula gets more accurate as more students take the form and share their results. Form 25 has been available long enough that its formula is built on hundreds of confirmed data points. Form 31 was released recently — which means the community dataset is smaller, and the formula carries more uncertainty than older forms.

This calculator uses 270.48 − 1.08 × wrong answers — calibrated from the data points currently available, cross-referenced against Form 30’s known formula for consistency. As more students report their Form 31 results alongside official scores, the formula will narrow. But here is why the current uncertainty matters less than it sounds: the variance in newer-form formulas is typically ±5 to 8 points, which is the same as the typical prediction variance even for well-established forms. What changes is confidence, not usefulness.

What matters more than formula precision at this stage: Form 31 is the newest available CBSSA Step 1 form. Its question style, vignette structure, and content emphasis reflect the real Step 1 exam as it exists in 2026 — more so than Forms 25, 26, or 27. Taking it gives you the most current available approximation of what test day will look like. Use the prediction as a directional signal, not a guarantee.

What Form 31 Tests Differently From Form 30

Forms 30 and 31 are adjacent in the sequence — but they are not the same exam. Understanding what shifted between them tells you what to review if Form 31 exposed a gap that Form 30 did not.

Score Reference — Form 31

Wrong Answers	Predicted Score	Readiness Signal
20 wrong	~249	Exceptional — well above average, foundation solid
30 wrong	~238	Strong — specific gaps manageable
40 wrong	~227	Above average — on track with targeted review
50 wrong	~216	Passing comfortably — common dedicated-period range
60 wrong	~205	Borderline — foundational gaps need attention
70 wrong	~194	Below passing — restructure plan before exam date

When to Take Form 31 — And What Comes Before and After

Form 31 is the final active Step 1 assessment form. Its position in your preparation sequence matters more than when you take it in absolute terms.

Form 31 vs the Free 120 — Two Different Tools, Two Different Questions

Every Step 1 student approaching test day faces the same question: should my last assessment be Form 31 or the Free 120? The answer depends on what you need from each tool — because they answer different questions.

The optimal sequence: Form 31 at 10 to 14 days out for your final score prediction. Review wrong answers over 5 to 7 days. Free 120 at 3 to 5 days out for interface practice. Students who use the Free 120 as a score predictor misunderstand its purpose — a raw percentage from the Free 120 cannot be reliably converted to a three-digit NBME score with the same precision as a scored CBSSA form.

Reviewing Form 31 Wrong Answers — The Final-Stage Method

Wrong answer review at this stage has different rules than earlier in dedicated. You are not trying to learn new material. You are trying to understand what type of error you made — because the remedy is different depending on the error type.

Real Questions Students Ask About Form 31

My Form 31 score is 5 points lower than my Form 30 score. Should I be worried?
Not automatically. First check whether the drop is concentrated in one area or spread across all subjects. Form 31 tests different subject emphases than Form 30 — a score drop concentrated in one subject identifies a gap, not a global regression. If the drop is spread uniformly across every subject, that is more informative. Also consider: Form 30 has the harshest penalty coefficient of any current form (1.15 per wrong answer) while Form 31 is 1.08. If you missed the same number of questions on both, Form 31 should actually predict slightly higher, not lower. A lower score on Form 31 with the same wrong-answer count means you got different questions wrong — which is the diagnostic information worth examining.

I passed Form 31 comfortably. Can I trust that and proceed with my exam date?
Yes — if you have also been consistently passing Forms 28, 29, and 30. A single passing score on the newest form is meaningful. Consistent passing scores across three to four of the most recent forms is very strong evidence of readiness. Do not look for reasons to doubt yourself at this stage. The preparation you have done is not erased by the fact that you are nervous — those are two separate things.

How accurate is the Form 31 formula given that it is newer?
Honest answer: the formula carries slightly more uncertainty than older forms because the community dataset is smaller. The typical prediction range is ±5 to 8 points, which is similar to well-established forms but with slightly wider confidence. As more students take Form 31 and report both their predicted and actual scores, the formula will narrow. For now, treat the predicted score as a directional signal — use it alongside your Form 29 and Form 30 predictions to build a composite picture rather than relying on any single form in isolation.

I have not taken Forms 29 or 30 yet. Should I take Form 31 or go back and do the others first?
Take Forms 29 and 30 first if time allows. Form 31’s predictive value is higher when you can compare it against earlier forms to identify a trend. A single data point tells you where you are now. A trend across three forms tells you whether you are improving, stable, or declining — and that trajectory information is often more useful for making preparation decisions than any single score.

Disclaimer: This calculator provides educational score estimates based on community regression data. Formula accuracy for Form 31 will improve as more student reports are collected. Results are not official NBME scores and should not be used as the sole basis for exam scheduling decisions. All NBME® and USMLE® trademarks belong to their respective owners. This site is not affiliated with or endorsed by the National Board of Medical Examiners.