Skip to main content
NBMEcalc
Head-to-head review

NBMEcalc vs AMBOSS Step 2 CK Predictor

A source-labeled comparison of access, supported inputs, output ranges, and published evidence. Product facts were checked against AMBOSS's public Score Predictor page.

Review method: public product information checked September 6, 2026. A partial mark means the feature was not clearly confirmed on the reviewed public page; it does not prove the feature is absent. This is not an accuracy study.

Feature-by-feature

NBMEcalc
  • Use without a paid subscription
  • Accepts multiple practice results
  • NBME form inputs
  • Free 120 input
  • UWSA input named on public product page
  • CMS subject-score guidance
  • Planning range shown
  • Passing probability shown
  • Public evidence / methodology material
AMBOSS Predictor
  • Use without a paid subscription
  • Accepts multiple practice results
  • NBME form inputs
  • Free 120 input
  • UWSA input named on public product page
  • CMS subject-score guidance
  • Planning range shown
  • Passing probability shown
  • Public evidence / methodology material

When the AMBOSS workflow may fit

AMBOSS states that its Score Predictor accepts practice-exam results, updates as results are added, displays a score range and passing probability, and connects the output with its study tools. It also states that submitting results for a prediction requires an active subscription. Verify current access and inclusions on the official page before choosing it.

When the NBMEcalc workflow may fit

  • You want to calculate without an account or subscription
  • You want to enter the source types explicitly supported here
  • You want the internal adjustments and limitations published alongside the tool
  • You accept that NBMEcalc has not published a holdout validation report

Bottom line

Choose based on input compatibility, access, evidence disclosure, and the decision you need to make—not a winner label. Neither product should replace official assessment feedback or an institution's test-date process.

AMBOSS Score Predictor — official product page

Try the source-agnostic alternative

Works with UWorld, NBME, UWSA, and Free 120 results — run the Step 2 CK predictor or the Step 1 predictor.

Predict my Step scoreAMBOSS → Step 2 CK converter