NBMECalc
Step 1 · Step 2 CK · UWSA · Free 120

Free NBME Score Calculator

The free NBME score calculator and predictor for Step 1 & Step 2 CK. Enter wrong answers — get your predicted 3-digit USMLE score instantly.

Calculate My Score
80% correct
0 wrong100 wrong200 wrong
Predicted Score
232
Passing threshold: 196
Excellent
Pass probability
99.8%
140▲ 196 passing300
Strong readiness. You're well above the safe zone — consider scheduling soon.
40
Wrong
160
Correct
80%
Accuracy

How to Use Your Predicted NBME Score

Allow for ±5–10 pts of error

Every predicted score carries an estimated margin of ±5–10 points. Don't schedule at the exact pass line — aim for your target score minus 10 pts.

Adjust UWSA scores for overprediction

UWSA 1 overpredicts by ~10.5 pts on average; UWSA 2 by ~6.9 pts (Seal et al. 2020, n=360–369). Subtract the appropriate buffer before deciding to schedule.

UWSA 1 vs UWSA 2 accuracy →
Cross-reference at least two forms

One score is a signal. Two consistent scores from different forms are a verdict. Always confirm with a second form before scheduling.

Target the safe zone, not just passing

Passing thresholds are 196 (Step 1) and 218 (Step 2 CK). Community safe zones are 210+ and 230+ — build in a buffer before scheduling.

USMLE Score Benchmarks

Step 1
Passing
196
Safe Zone
210+

Pass/Fail since 2022 — 3-digit score is an internal benchmark only

Step 2 CK
Passing
218
Safe Zone
230+

3-digit score is reported; competitive specialties typically require 240+

2026 Exam Schedule

Official Bulletin
Step 17 × 60-min blocks · 8 hrs

Pass/Fail only — no 3-digit score reported since 2022.

Step 2 CK8 × 60-min blocks · 9 hrs

3-digit score reported. Competitive specialties typically require 240+.

As of May 7, 2026: format changed to 16 × 30-min blocks (same 9 hrs total).

Registration (2026 onwards)

AMG — Register via NBME
US medical students & graduates
IMG — Register via FSMB
International medical students & graduates

Scheduling opens up to 6 months in advance, first-come first-served. Full scheduling guide

How This NBME Score Calculator Works

1
Pick Your Form
Select the NBME or UWSA form you just completed — each form has its own regression formula.
2
Enter Wrong Answers
Use the slider or type in the number of questions you got wrong. Or just enter your percent correct.
3
Get Your Predicted Score
See your 3-digit USMLE score, pass probability, and a readiness verdict — instantly.

Supported NBME Forms

USMLE Step 1

Covers NBME 25–31, UWSA 1 & 2, and Free 120 — 10 forms in total. Use predicted scores to track readiness and decide when to schedule.

NBME 25NBME 26NBME 27NBME 28NBME 29NBME 30NBME 31UWSA 1UWSA 2Free 120
Step 1 Calculator
USMLE Step 2 CK

Covers NBME 9–15, UWSA 1 & 2 — 9 forms in total. Step 2 CK reports a 3-digit score; use predictions to benchmark before scheduling.

NBME 9NBME 10NBME 11NBME 12NBME 13NBME 14NBME 15UWSA 1UWSA 2
Step 2 CK Calculator

Recommended NBME Form Sequence

Step 1
Week 1–2
NBME 25
Baseline
Week 3–5
NBME 26–27, UWSA 1
Mid-check · gap identification
Week 5–7
NBME 28–30
Confidence · readiness
Final 1–2 weeks
NBME 31
Pre-exam simulation
Final 5–7 days
UWSA 2
Scheduling decision
Final 2–3 days
Free 120
Last check
Step 2 CK
Week 1–2
NBME 9
Baseline
Week 3–6
NBME 10–12, UWSA 1
Progress tracking
Week 6
NBME 13
Gold standard
Final 2–3 weeks
NBME 14–15
Pre-exam check
Final 7–10 days
UWSA 2
Scheduling decision

Regression Formulas & Data Sources

Step 1200 questions unless noted
NBME 25
Score = − × wrongDisputed
NBME 26
Score = − × wrongDisputed
NBME 27
Score = − × wrongMulti-source
NBME 28
Score = − × wrongMulti-source
NBME 29
Score = − × wrongDisputed
NBME 30
Score = − × wrongMulti-source
NBME 31
Score = − × wrongSingle source
UWSA 1(160q)
Score = − × wrongSingle source
UWSA 2(160q)
Score = − × wrongSingle source
Free 120(120q)
No linear formula — percent correct onlyNo formula
Step 2 CK200 questions unless noted
NBME 9
Score = − × wrongSingle source
NBME 10
Score = − × wrongMulti-source
NBME 11
Score = − × wrongMulti-source
NBME 12
Score = − × wrongSingle source
NBME 13
Score = − × wrongMulti-source
NBME 14
Score = − × wrongSingle source
NBME 15
Score = − × wrongSingle source
UWSA 1(160q)
No linear formula — percent correct onlySingle source
UWSA 2(160q)
No linear formula — percent correct onlySingle source

Confidence

Multi-source
Disputed
Single source
No formula

Formula values are derived from community regression data and are blurred to prevent misuse out of context. All calculations run live in the calculator above.

Primary Sources

yousmle.com — original regression compilations for Step 1

nbmescore.com — cross-reference for Step 1 & Step 2 CK

r/step1, r/step2 — community megathreads (raw data points)

medboardtutors.com — secondary validation for Step 2 CK

Frequently Asked Questions

Ready to check your NBME score?

Pick your form, enter your wrong answers, and get your predicted 3-digit USMLE score in seconds.

Calculate My Score

This tool is for educational purposes only. Not affiliated with NBME® or USMLE®. Predictions are estimates based on community-sourced regression data originally published by yousmle.com and collected from r/step1 and r/step2. Results carry an estimated error of ±5–10 points.