Skip to main content
Step 2 CK self-assessment estimator

NBME 13 Step 2 CK Score Calculator for CCSSA Form 13

Missed 70 of 200 on Form 13? That reads 224. This NBME 13 Step 2 CK score calculator takes misses, a percent, or a score you hold.

200 questionsPassing ≈ 218Runs in your browser

Not affiliated with, endorsed by, or sponsored by the NBME® or USMLE®. Educational estimates only.

Enter your result

Any way you have it — wrong answers, percent correct, or a score you were already given.

= 85.0% correct • 170 correct

Enter your result and press Calculate to see your estimated three-digit score, pass probability, and what the result means.

Quick take on this form

Form 13 runs 298.80 minus 1.07 points per missed question across 200 items — the shallowest penalty here, and the lowest starting value of the modern six. The two cancel, so the NBME 13 Step 2 CK score calculator tracks Form 15 within two points.

NBME 13 score reference

Estimated three-digit score and pass probability at each wrong-answer count for NBME 13 (CCSSA Form 13).

NBME 13 wrong answers to estimated score reference
WrongCorrect %Est. scorePass prob.
0100.0%29999%
597.5%29399%
1095.0%28899%
1592.5%28399%
2090.0%27799%
2587.5%27299%
3085.0%26799%
3582.5%26199%
4080.0%25699%
4577.5%25199%
5075.0%24599%
5572.5%24099%
6070.0%23595%
6567.5%22988%
7065.0%22488%
7562.5%21975%
8060.0%21360%
8557.5%20845%
9055.0%20330%
9552.5%19715%
10050.0%19215%
10547.5%18615%
11045.0%18115%
11542.5%17615%
12040.0%17015%
12537.5%16515%
13035.0%16015%
13532.5%15415%
14030.0%14915%
14527.5%14415%
15025.0%13815%
15522.5%13315%
16020.0%12815%
16517.5%12215%
17015.0%11715%
17512.5%11215%
18010.0%10615%
1857.5%10115%
1905.0%9615%
1952.5%9015%
2000.0%8515%

Estimates only. Rows step by five wrong answers; your exact result is calculated above.

How the NBME 13 Step 2 CK score calculator converts wrong answers

Enter your misses out of 200. The NBME 13 Step 2 CK score calculator subtracts 1.07 points per miss from 298.80.

Percent correct runs the same line: 65 percent is 70 misses, and the NBME 13 Step 2 CK score calculator returns 224.

Have a three-digit number already? The NBME 13 Step 2 CK score calculator runs the line backwards to the miss count.

No score report needed. A paper tally feeds the NBME 13 Step 2 CK score calculator, and nothing leaves your browser.

A 1.07 slope skips one value in fifteen, so the NBME 13 Step 2 CK score calculator never returns 218 itself.

Seventy-five wrong reads 219, 76 reads 217, and the NBME 13 Step 2 CK score calculator has no rung between them.

One question decides it there, so a 219 on the NBME 13 Step 2 CK score calculator is one item from failing.

NBME 13 conversion chart: what the NBME 13 Step 2 CK score calculator gives per miss

Anchors: 10 wrong reads 288, 30 reads 267, 50 reads 245, 70 reads 224. The NBME 13 Step 2 CK score calculator fills the rest in.

Backwards, a 230 costs 64 misses, a 240 costs 55 and a 250 costs 46 on the NBME 13 Step 2 CK score calculator.

Nine or ten questions buy each ten-point step, the one NBME 13 Step 2 CK score calculator figure worth revising against.

Pass probability comes off a step table, so the NBME 13 Step 2 CK score calculator reads 75 percent at 219 and 99 at 240.

One percentage covers a spread of scores, so read that NBME 13 Step 2 CK score calculator field as a summary.

The NBME 13 Step 2 CK score calculator has the shallowest penalty in the pool and the lowest intercept of the modern six.

Beside the steepest late form the NBME 13 Step 2 CK score calculator sits one point apart at 30 misses and level at 60.

Two points is the widest that gap gets. The gentlest curve buys almost nothing.

What a good predicted score looks like on Form 13

A converted 219 clears the line by a point, and the NBME 13 Step 2 CK score calculator bands it 213 to 225.

Good means the whole band clears 218 — on the NBME 13 Step 2 CK score calculator, a converted 225.

That is 69 wrong. A converted 232 spans 226 to 238, where the NBME 13 Step 2 CK score calculator has settled it.

Above 240 the NBME 13 Step 2 CK score calculator and every sibling form agree within a point, so the curve stops mattering.

Strong results get discounted because the form sounds forgiving, and two points is not a discount the NBME 13 Step 2 CK score calculator supports.

Form 13 is a full 200-question paper, and the NBME 13 Step 2 CK score calculator tracks its siblings.

Temper confidence with the six-point band and single-sitting variance, not the slope the NBME 13 Step 2 CK score calculator uses.

How accurate the NBME 13 Step 2 CK score calculator is, and when to sit Form 13

The band on the NBME 13 Step 2 CK score calculator is plus or minus six, with an exam range five to twelve points higher.

The NBME 13 Step 2 CK score calculator fits those constants from public data, not from the exam makers; how it was calibrated shows the working.

Other tools quote correlations for particular forms. The NBME 13 Step 2 CK score calculator restates none of them.

Conditions stay invisible: the NBME 13 Step 2 CK score calculator cannot see a paper sat untimed, with notes open, or over two evenings.

Form 13 belongs late, which is where the NBME 13 Step 2 CK score calculator earns its keep.

A six-point band puts the NBME 13 Step 2 CK score calculator with Forms 10 to 12, not the tighter final pair.

Run the NBME 13 Step 2 CK score calculator again on the next Step 2 CK form, or compare the seven curves first.

Not affiliated with, endorsed by, or sponsored by the NBME or the USMLE program. Every NBME 13 Step 2 CK score calculator figure is an estimate.

Frequently asked questions

Straight answers about what this estimate can and cannot tell you.

How many wrong answers pass on the NBME 13 Step 2 CK score calculator?

Seventy-five out of 200, or 62.5 percent, reads 219. Seventy-six drops to 217.

The NBME 13 Step 2 CK score calculator never prints 218 itself.

Is NBME 13 an easier form than the other Step 2 CK papers?

Its slope is shallowest in the pool, its intercept lowest of the six.

Across 0 to 100 misses the NBME 13 Step 2 CK score calculator stays within two points of Form 15, the steepest paper.

What percent correct is a 240 on the NBME 13 conversion chart?

About 72.5 percent on the NBME 13 Step 2 CK score calculator, or 55 wrong. A 230 needs 64 misses.

Ten points costs nine or ten questions on the NBME 13 Step 2 CK score calculator.

What is a good score on the NBME 13 Step 2 CK score calculator?

One whose six-point band clears 218 outright, which the NBME 13 Step 2 CK score calculator reaches near a converted 225, or 69 misses.

How accurate is the NBME 13 Step 2 CK score calculator?

Plus or minus six points, with an exam range five to twelve higher. The NBME 13 Step 2 CK score calculator fits that band from public data.

When should NBME 13 be taken before the exam?

Ten days to two weeks out, the last checkpoint before the final pair.

An unseen form held back gives the NBME 13 Step 2 CK score calculator a tighter second reading.

Can the NBME 13 Step 2 CK score calculator run an offline conversion?

Yes. A miss count out of 200 is the only input the NBME 13 Step 2 CK score calculator needs, so an answer sheet is enough.

Does percent correct give the same NBME 13 score conversion?

It does. Percent, misses and a score are three doors into one NBME 13 Step 2 CK score calculator line: 65 percent and 70 misses both read 224.

Cross-check this estimate against another form, or read how the models are built.

Share this calculator

Send it to a study partner sitting the same form, or print a copy once you have run your numbers.

Form 13 holds 219 out to 75 wrong, and the NBME 13 Step 2 CK score calculator is free to re-run.

Not affiliated with, endorsed by, or sponsored by the NBME® or USMLE®. Educational estimates only.