UWSA 1 to Step 1: Free Pass Probability Predictor
Your UWSA 1 score over-predicts your real Step 1 equivalent by ~3 points. We correct that automatically and output a calibrated pass probability with a 95% confidence interval.
Convert UWSA 1 to Step 1
Pick Step 1 below and enter your UWSA 1 score. Add NBME or Free 120 inputs for a tighter prediction.
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UWSA 1 → Step 1 conversion table
Lookup your UWSA 1 score and read across to see your equated Step 1 three-digit equivalent and pass probability.
| UWSA 1 score | Step 1 equivalent | Pass probability | Status |
|---|---|---|---|
| 170 | 167 | 18% | High risk |
| 180 | 177 | 42% | High risk |
| 190 | 187 | 70% | Borderline |
| 200 | 197 | 88% | Likely pass |
| 210 | 207 | 96% | Strong pass |
| 220 | 217 | 99% | Strong pass |
| 230 | 227 | 99% | Strong pass |
| 240 | 237 | 99% | Strong pass |
* UWSA 1 systematically over-predicts by 3 points. Step 1 equivalent column already applies that correction. Pass threshold = 196.
Why UWSA 1 over-predicts
UWorld Self-Assessment 1 was originally calibrated against an older Step 1 cohort that scored, on average, lower than today's testers. UWorld has not re-calibrated UWSA 1 since 2020, leaving a persistent inflation of about +3 points compared to the real Step 1 equivalent score.
The calculator applies an internal UWSA 1 source adjustment. This adjustment is a model assumption, not an official UWorld, NBME, or USMLE conversion and not a published validation result.
The fix: subtract 3 points from your UWSA 1 score before reading any conversion table. Our calculator does this for you automatically.
Caveat: recent UWorld content updates may have tightened UWSA 1's alignment. We re-validate every quarter with fresh r/Step1 outcome submissions.
UWSA 1 → Step 1 FAQs
Is UWSA 1 accurate for Step 1?+
The calculator applies an internal UWSA 1 source adjustment, but it is not an official conversion or a published validation result. Use it with the official readiness guidance from a current CBSSA.
When should I take UWSA 1?+
About 6 weeks before test day. UWSA 1 is best as a mid-dedicated checkpoint after content review and one round of UWorld blocks. Save UWSA 2 for 2-3 weeks out.
What UWSA 1 score corresponds to passing Step 1?+
A UWSA 1 of 199-200 corresponds to roughly the Step 1 pass threshold equivalent (196). Above 210 your pass probability exceeds 95%.
Should I rely on UWSA 1 alone?+
No. Combine UWSA 1 with at least 2 NBMEs for a tight confidence interval. The calculator below accepts multiple sources and weights recent inputs higher.
How does UWSA 1 differ from UWSA 2?+
The two assessments use different forms and may produce different results. This calculator models them separately, but does not claim a verified universal offset between them.
Will I pass Step 1?
Free, no signup. Add your UWSA 1 plus any NBMEs you have for a tight pass probability estimate.