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DMV Practice Test Scorer

Score a practice test from the number of questions, wrong answers and a pass mark you enter. Shows percent correct, pass or fail and correct answers needed. How it works

Use the DMV Practice Test Scorer

Pass marks differ by state and by test. The 80% here is a starting value; check your state DMV for the figure that applies.

Percent correct
100.00%
Result PASS

PASS
20 of 20 correct

You met the 80% pass mark.

To pass you need at least 16 of 20 correct.

About the DMV Practice Test Scorer

18 correct out of 20 is 90%. The DMV practice test scorer works out percent = (questions − wrong) ÷ questions × 100 and shows PASS when that is at least the pass mark you enter. At 80% on a 20-question test you need 16 correct, so 4 wrong answers still pass and 5 fail. It holds no state’s question count or pass mark: take them from your state DMV.

Correct answers needed to pass, and wrong answers allowed

Questions70% pass mark75% pass mark80% pass mark85% pass mark90% pass mark
107 (3 wrong)8 (2 wrong)8 (2 wrong)9 (1 wrong)9 (1 wrong)
2014 (6 wrong)15 (5 wrong)16 (4 wrong)17 (3 wrong)18 (2 wrong)
2518 (7 wrong)19 (6 wrong)20 (5 wrong)22 (3 wrong)23 (2 wrong)
3021 (9 wrong)23 (7 wrong)24 (6 wrong)26 (4 wrong)27 (3 wrong)
4028 (12 wrong)30 (10 wrong)32 (8 wrong)34 (6 wrong)36 (4 wrong)
5035 (15 wrong)38 (12 wrong)40 (10 wrong)43 (7 wrong)45 (5 wrong)

The fewest correct answers is ceil(questions × pass mark ÷ 100), the figure the scorer shows under the result. The pass marks in the columns are examples you can type in, not any state’s requirement.

How to use this tool

  1. Enter the number of questions on the practice test and how many you got wrong.
  2. Enter the pass mark in percent from your state DMV’s handbook or test page. The 80% shown at the start is only a starting value.
  3. Read PASS or FAIL, the percent correct, the number correct and the fewest correct answers that pass.

Frequently asked questions

How many questions can I miss on a 20-question test with an 80% pass mark?
Four. 16 correct is exactly 80%, which passes, and 15 correct is 75%, which fails.
What is the passing score on the DMV written test?
Each state sets its own. Florida’s Class E knowledge exam, for example, has 50 questions and you need 40 right, which is 80%. For another state, search for that state’s driver handbook or knowledge test page and enter its question count and pass mark here.
How do I work out my percent on a practice test?
Subtract the wrong answers from the number of questions, divide by the number of questions and multiply by 100. With 5 wrong out of 25 that is 20 ÷ 25 × 100 = 80%. With 4 wrong out of 30 it is 86.67%.
Does a score exactly at the pass mark pass?
Yes. The scorer compares the exact ratio, so 20 of 25 is 80% and passes an 80% mark, while 39 of 50 is 78% and fails because 40 are needed.
Is the percent rounded?
It is shown to two decimals, and the pass decision uses the exact ratio, not the rounded number. If rounding would make a failing score read as the pass mark, the figure is rounded down instead.
Are my numbers saved?
The three values are kept in this browser’s local storage so they are there on your next visit. The Clear Saved Values button removes them.

Checking a permit practice test against your state's pass mark

After a practice test from a handbook, a driving school or an app, type the number of questions, how many you got wrong and your state's pass mark. A 50-question test at 80% needs 40 correct, so you can miss 10; a 25-question test at 80% needs 20, so you can miss 5. An instructor or parent writing a short quiz of their own can set any length and any pass mark the same way. A practice test can differ from the real one in length and in how it is marked, so a pass by one or two answers is a reason to take another set before test day.

How the score and pass mark work

correct = questions − wrong and percent = correct ÷ questions × 100. The result is PASS when correct × 100 ≥ pass mark × questions, compared exactly, so a score equal to the pass mark passes. The fewest correct answers that pass is ceil(questions × pass mark ÷ 100). Example: 20 questions, 4 wrong and a pass mark of 80 give 16 correct, 80.00% and a PASS. With 5 wrong the score is 75.00% and the result is FAIL. The percent is shown to two decimals, and when rounding would make a failing score look like the pass mark it is rounded down instead. Questions must be whole numbers from 1 to 10,000, wrong answers from 0 up to the number of questions, and the pass mark from 0 to 100 with at most two decimals. The three values are kept in this browser's local storage until you press Clear Saved Values.

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