Test Grade Calculator

Turn the number of questions you got wrong into a percentage and letter grade. The table shows the score for every number wrong, so you can see what one more mistake costs.

Your test
WrongScoreLetter
0100.0%A+
197.5%A+
295.0%A
392.5%A
490.0%A-
587.5%B+
685.0%B
782.5%B
880.0%B-
977.5%C+
1075.0%C
1172.5%C
1270.0%C-
1367.5%D+
1465.0%D
1562.5%F

Test grade

85.0%

34.0 of 40 right — a B.

  • Each question is worth2.50%

How to use it

  1. Enter the number of questions (or total points).
  2. Enter how many you got wrong (or points missed).
  3. Read your percentage and letter grade; the table lists the other outcomes.

The formula

Score = (questions − wrong) ÷ questions × 100

Example: 6 wrong out of 40: 34 ÷ 40 = 85%, a B.

Good to know

  • For tests with questions worth different points, use points: total points and points missed.
  • Teachers use this as an 'EZ grader' — the table doubles as a grading chart.

Questions

How much is each question worth?

100 divided by the number of questions. On a 25-question test each question is 4%.

What is 17 out of 20 as a grade?

85%, which is a B on the standard U.S. scale.