Numeros
Categories Financial Calculators Health Calculators Math Calculators Date & Time Construction Engineering Physics Business Education Lifestyle Converters Generators
About

Test Score Calculator

By

Enter the number of questions right or wrong to find your test score as a percentage and letter grade instantly.

Test Score Calculator

Live
Score
84.00% (B)
Correct
42
Wrong
8

The formula

Score = (Number correct / Total questions) x 100
Example

42 correct out of 50 questions: score = 42/50 = 84%, a B.

Step-by-step guide

  1. Enter the total number of questions on the test.
  2. Enter either the number correct or wrong - whichever you know.
  3. Read your percentage score and letter grade.

Quick reference: common test lengths

For very common test lengths, each question is worth a fixed, easy-to-remember percentage: on a 10-question test, each question is worth 10%. On a 20-question test, 5% each. On a 25-question test, 4% each. On a 50-question test, 2% each. This calculator handles any test length exactly, but these round numbers can be a handy mental shortcut during a test itself.

Common mistakes

Miscounting whether a question is "correct" or "wrong" when partial credit was awarded - a partially correct answer needs its own fractional value, not a simple binary count.
Assuming all questions are worth equal points - if some questions carry more weight than others, use our Grade Calculator instead, entering points earned versus points possible.

Frequently asked questions

What letter grade scale does this use?

A standard US scale (93+ = A down to 60 = D-, below that F). Check your specific instructor's scale if the exact letter grade matters, since cutoffs vary somewhat between schools and courses.

What if some questions are unanswered rather than wrong?

Unanswered questions typically count the same as wrong answers for scoring purposes (unless the test specifically penalizes guessing differently), so include them in your "wrong" count.

Does this account for extra credit questions?

Not directly - if extra credit questions push your score above the total possible points, you may need to calculate the percentage manually as (points earned / points possible) x 100, since the count-based method here assumes correct answers can't exceed the total question count.

Related calculators

See the full list of Education calculators, or try: