Test Score Calculator
Find your score on a test or exam. Enter how many questions there were and how many you got right to see your percentage, your score out of 10 and out of 20, and your letter grade.
Your score
72.0%
Check the highlighted fields to see your result.
- Points
- 36 / 50
- Out of 10
- 7.2
- Out of 20
- 14.4
- Letter grade
- C-
- Unanswered
- 4
Results are estimates for information only and do not constitute financial, medical, or legal advice.
How it works
The calculator multiplies your correct answers by the points each one is worth, takes away any penalty for wrong answers, and divides by the maximum possible score. The result is shown as a percentage and converted to the scales out of 10 and out of 20 that many schools use. The score never goes below zero.
The formulas
Score = correct × points per answer − wrong × penalty
Percentage = score ÷ (questions × points per answer) × 100
Worked example
A 50-question test: 38 correct, 8 wrong, 4 unanswered. Each correct answer is worth 1 point and each wrong answer costs 0.25.
- Score: 38 × 1 − 8 × 0.25 = 38 − 2 = 36 points.
- Percentage: 36 ÷ 50 × 100 = 72%.
- Out of 10: 7.2. Out of 20: 14.4.
Frequently asked questions
How do I calculate a test score?
Divide the number of correct answers by the number of questions and multiply by 100. If you got 45 right out of 50, your score is 45 ÷ 50 × 100 = 90%. If each question is worth more than one point, the calculator multiplies for you.
What is a penalty for wrong answers?
Some multiple-choice tests subtract points for wrong answers, so guessing does not pay. For example, a test with four options might subtract 0.25 points per wrong answer. Unanswered questions are not penalized. Leave the penalty at 0 if your test has none.
How do I convert my score to a scale out of 10 or 20?
The calculator shows both. A score out of 10 is the percentage divided by 10, and out of 20 is the percentage divided by 5. For example, 72% is 7.2 out of 10 and 14.4 out of 20.
Is the letter grade official?
No. It uses a common US scale with plus and minus. Your teacher or school may grade differently, so use it only as a guide.