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Step 2 CK self-assessment estimator

NBME 11 Step 2 CK Score Calculator and Form 11 Conversion

The NBME 11 Step 2 CK score calculator prices your paper one question at a time: each of the 200 questions you miss costs about 1.08 scaled points off a starting value near 299.5. That unit separates a real improvement from the wobble of one test.

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

The NBME 11 Step 2 CK score calculator runs 299.5 minus 1.08 points per wrong answer across 200 questions, with an interval of plus or minus six and a realistic exam range five to twelve points higher. The slope is the useful part. Across the seven Step 2 CK forms the per-question cost varies only from 1.07 to 1.10, so most of the difference between forms is where each line starts. One consequence shows up here: 218 is never produced.

NBME 11 score reference

Estimated three-digit score and pass probability at each wrong-answer count for NBME 11 (CCSSA Form 11).

NBME 11 wrong answers to estimated score reference
WrongCorrect %Est. scorePass prob.
0100.0%30099%
597.5%29499%
1095.0%28999%
1592.5%28399%
2090.0%27899%
2587.5%27399%
3085.0%26799%
3582.5%26299%
4080.0%25699%
4577.5%25199%
5075.0%24699%
5572.5%24099%
6070.0%23597%
6567.5%22990%
7065.0%22477%
7562.5%21955%
8060.0%21327%
8557.5%20812%
9055.0%2024%
9552.5%1971%
10050.0%1921%
10547.5%1861%
11045.0%1811%
11542.5%1751%
12040.0%1701%
12537.5%1651%
13035.0%1591%
13532.5%1541%
14030.0%1481%
14527.5%1431%
15025.0%1381%
15522.5%1321%
16020.0%1271%
16517.5%1211%
17015.0%1161%
17512.5%1111%
18010.0%1051%
1857.5%1001%
1905.0%941%
1952.5%891%
2000.0%841%

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

What one wrong answer costs on the NBME 11 Step 2 CK score calculator

Start at 299.5. The NBME 11 Step 2 CK score calculator subtracts 1.08 for each of the 200 questions missed, then rounds.

Ten misses cost about eleven points. One miss costs a little over one, and that unit is the whole NBME 11 Step 2 CK score calculator.

Percent correct enters the same line: the NBME 11 Step 2 CK score calculator reads 65% as 70 wrong and returns 224.

It is also the scale the NBME 11 Step 2 CK score calculator uses for any change between two sittings.

Three points is three questions, inside the noise of one 200-question paper, so the NBME 11 Step 2 CK score calculator cannot resolve it.

Fifteen points is fourteen questions, and the NBME 11 Step 2 CK score calculator resolves that comfortably.

A four-point drop on the NBME 11 Step 2 CK score calculator is four items flagged differently on a different afternoon.

A fifteen-point move is the NBME 11 Step 2 CK score calculator telling you something real happened.

NBME 11 conversion chart: ten points in questions missed

Ten wrong converts to 289 on the NBME 11 Step 2 CK score calculator, 20 wrong to 278, 30 wrong to 267.

At 40 misses the NBME 11 Step 2 CK score calculator returns 256. At 50, it returns 246. At 60, 235.

Seventy wrong is 224, 80 wrong is 213, and at 90 the NBME 11 Step 2 CK score calculator reports 202.

Backwards the targets sit about nine questions apart, and the NBME 11 Step 2 CK score calculator runs that direction too.

On the NBME 11 Step 2 CK score calculator a 230 costs 64 misses at most, a 240 costs 55, a 250 costs 46.

The passing standard is the odd one out on the NBME 11 Step 2 CK score calculator, which matters here.

Seventy-five wrong returns 219 and 76 returns 217, so the NBME 11 Step 2 CK score calculator can never report 218.

The NBME 11 Step 2 CK score calculator skips 205, 232 and 245 too. A slope of 1.08 steps over one value in thirteen.

How accurate the NBME 11 Step 2 CK score calculator is against 218

A good NBME 11 predicted score is one where the NBME 11 Step 2 CK score calculator puts the whole band clear of 218, from about 225.

Below that the result is ambiguous, and the NBME 11 Step 2 CK score calculator says so rather than hiding it.

A converted 220 spans 214 to 226, and the NBME 11 Step 2 CK score calculator reports pass probability near 60% for it.

Sixty per cent is the NBME 11 Step 2 CK score calculator saying it does not know. Treat it as a band, not a probability.

The NBME 11 Step 2 CK score calculator publishes plus or minus six, with a realistic exam range five to twelve points higher.

Those figures describe a fitted relationship. The NBME 11 Step 2 CK score calculator is not quoting a personal margin of error.

The constants behind the NBME 11 Step 2 CK score calculator come from publicly circulated data. Read how each form was fitted.

The NBME 11 Step 2 CK score calculator uses a logistic curve, where five of the seven forms use a published step table.

Identical scores can show different percentages on different pages, so compare what the NBME 11 Step 2 CK score calculator prints as a three-digit number.

Above passing, be careful about precision that is not there. The NBME 11 Step 2 CK score calculator puts only five questions between 245 and 250.

When to take NBME 11, and doing the arithmetic yourself

The NBME 11 Step 2 CK score calculator sits mid-sequence, after an early baseline and before the final pair.

Its value is comparative. Taken a week after another form, the NBME 11 Step 2 CK score calculator tells you whether the intervening study moved anything.

The per-question unit in the NBME 11 Step 2 CK score calculator says whether that move is large enough to believe.

The second paper has to be unseen, otherwise the NBME 11 Step 2 CK score calculator is measuring recall of specific questions.

The most forgiving Step 2 CK form has the gentlest slope in the pool and makes a useful contrast with the NBME 11 Step 2 CK score calculator.

The next Step 2 CK form is the usual sequential choice. With three results, read the trend, not the last number.

No paid score report is needed. Count the questions you missed out of 200 and the NBME 11 Step 2 CK score calculator does the rest.

A known score can be entered the other way, which is how the NBME 11 Step 2 CK score calculator turns a target into a study goal.

What the NBME 11 Step 2 CK score calculator cannot see is the circumstances of the sitting.

Untimed papers, or papers with notes open, inflate what the NBME 11 Step 2 CK score calculator is given, not what you will do.

Content sampling and fatigue are invisible to the NBME 11 Step 2 CK score calculator as well.

The NBME 11 Step 2 CK score calculator is not affiliated with, endorsed by, or sponsored by the NBME or the USMLE program.

Frequently asked questions

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

What is one wrong answer worth on the NBME 11 Step 2 CK score calculator?

About 1.08 scaled points, so ten missed questions cost roughly eleven points on the NBME 11 Step 2 CK score calculator.

Across the seven forms the cost ranges only from 1.07 to 1.10, so the NBME 11 Step 2 CK score calculator differs mainly at its intercept.

Why does the NBME 11 Step 2 CK score calculator never return 218?

Because a slope of 1.08 steps over one value in thirteen. On the NBME 11 Step 2 CK score calculator, 75 wrong gives 219 and 76 gives 217.

The NBME 11 Step 2 CK score calculator skips 205, 232 and 245 for the same reason. It is a property of a fitted line, not a broken conversion.

What percent correct passes on the NBME 11 Step 2 CK score calculator?

Seventy-five wrong out of 200, or 62.5% correct, converts to 219 on the NBME 11 Step 2 CK score calculator and clears the 218 passing standard by one point.

Seventy-six wrong drops to 217. The NBME 11 Step 2 CK score calculator runs six points each way, so the low 220s settle nothing.

Is a five-point change on the NBME 11 Step 2 CK score calculator real?

Usually not. On the NBME 11 Step 2 CK score calculator five points is five items, well inside the variation one sitting produces.

Differences of fifteen points or more are much harder to explain by chance. That is the size the NBME 11 Step 2 CK score calculator is built to detect.

Can the NBME 11 Step 2 CK score calculator work offline from misses?

Yes. The NBME 11 Step 2 CK score calculator needs only the number of questions you missed out of 200, so a count from your own answer sheet is enough.

Percent correct returns the same result, and a three-digit score runs the NBME 11 Step 2 CK score calculator backwards.

When should the NBME 11 Step 2 CK score calculator be used in prep?

Mid-sequence. Run the NBME 11 Step 2 CK score calculator seven to ten days after a previous form, with study in between.

The NBME 11 Step 2 CK score calculator is comparative rather than absolute, so it works best between other readings. Save the tighter forms for last.

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

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

Form 11 holds 219 out to 75 wrong, and the NBME 11 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.