This USMLE score predictor is free — no signup, no paywall. Combine your NBME, UWSA, Free 120, and AMBOSS scores into one Step 1, Step 2 CK, or Step 3 prediction.
Recent exams count more than old ones, so a strong NBME this week won’t get dragged down by a weaker UWSA from a month ago. Scores that agree tighten your range; scores that disagree widen it.
Pick your exam, add every score you’ve got, and get your predicted 3-digit score, 95% confidence range, and pass probability — free, instant, and with no fabricated accuracy claims.
Your Predicted Step 2 CK Score
Subject averages at your score level
Cohort subject comparisons are unavailable until a reproducible subject-level dataset is published.
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Pick up to 3 — used to personalize the full reportGet your day-by-day study blueprint
Built from your exact score, weak subjects, and timeline — a personalized, exam-specific plan, not a generic template.
- Day-by-day 7-day schedule — not just a weekly overview
- Subject priority ranked by USMLE blueprint weight
- Exact resources — chapters, video episodes, UWorld Q counts
- IMG / USMD / USDO specific strategy section
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How to combine NBME, UWSA, and Free 120 scores into one prediction
Choose your target exam first — Step 1, Step 2 CK, or Step 3 — to auto-set the passing threshold. Then add every practice test you’ve taken so far.
For each row, pick the provider and enter your score, plus how many days ago you took it. Set your remaining days and hit Predict.
Which practice exam should you trust most?
No single source is perfect. NBME forms mirror your real exam but vary in difficulty between forms — earlier ones tend to run harsher.
UWSA 2 is trusted most for a final decision, though it can run slightly optimistic. Free 120 and AMBOSS work best as supporting data points, not your only input.
How the recency weighting works
Exams taken closer to today count more than older ones in your final prediction. A UWSA from a month ago won’t drag down a strong NBME from this week.
This mirrors how your actual knowledge changes over time — recent performance is a better signal of where you stand right now.
Understanding your confidence interval and pass probability
Your 95% CI isn’t just based on how many exams you entered — it also looks at how much your scores agree with each other.
Scores that line up closely give you a tight range. Scores that disagree by 10+ points widen it, since that’s the honest reflection of your actual uncertainty.
Frequently asked questions
Accuracy depends on how many exams you enter and how closely they agree. A single score gives a wide range; two or three scores that agree narrow that range considerably. If your inputs disagree by 10+ points, the tool will show a wider range rather than a falsely confident number — that’s intentional, not a bug.
Neither is automatically better. NBME forms are written by the same organization as your real exam, but individual forms vary in difficulty. UWSA 2 is the assessment most advisors trust for a final decision, though it tends to run slightly optimistic. Combining both, weighted by recency, gives a more balanced estimate than relying on either alone.
A single score produces a result, though the range will be wide. Two or more scores taken close together, especially if they agree, meaningfully tighten your predicted range. There’s no hard minimum — more recent, consistent data points simply improve confidence.
Neither exclusively. A large gap usually reflects an off day, fatigue, or a content mismatch rather than one score being wrong. Add a third data point before making a scheduling decision, and expect your predicted range to be wider until your scores start agreeing.
Enter your Free 120 percent correct exactly as shown on your official report — this tool converts it to a predicted 3-digit score for you. Don’t convert it yourself first, or the prediction will be inaccurate.
Step 1 is pass/fail with a minimum passing score of 196. Step 2 CK’s passing score is 218, effective July 2025. Step 3’s passing score is 198. This tool automatically applies the correct threshold based on which exam you select.
No. This is an independent, community-informed planning tool. It is not affiliated with, endorsed by, or sponsored by NBME, FSMB, the USMLE program, or UWorld.