Percentage Calculator

This easy percentage calculator solves all your percent problems

Test Score Percentage Calculator


Turning raw points earned on a test, quiz, or assignment into a percentage is one of the most common school‑related calculations. Students use percentage scores to understand their performance, while teachers rely on them to grade consistently and fairly. This test score percentage calculator converts points earned out of total possible points into an accurate percentage, giving you a clear view of how well you performed.

How many points did you earn, out of how many possible?

Points earned: Points possible:    


How test score percentages work


Percentage scores are calculated using a simple part‑to‑whole formula. You compare the number of points earned to the total number of points possible, then convert that ratio into a percentage:

Percentage score = (points earned / points possible) × 100

For example, if you scored 42 out of 50 on a quiz:

(42 / 50) × 100 = 84%.

This percentage is the foundation of most grading systems. Many schools then convert the percentage into a letter grade — for example, 90–100% = A, 80–89% = B, and so on — but the percentage itself is the key number you need first. It tells you exactly how much of the test you answered correctly.



Why percentage scores matter


Percentage scores are used everywhere in education:

  • Students track their performance across assignments and exams.
  • Teachers grade consistently using point‑based rubrics.
  • Online learning platforms convert quiz results into percentages.
  • Parents monitor academic progress using percentage‑based report cards.
  • Standardized tests often report results as percentages or scaled scores.

Because percentages are universal, converting raw points into a percentage helps you compare scores across different tests, subjects, and grading systems.



Examples of test score percentage calculations


Example 1: 18 out of 20
(18 / 20) × 100 = 90%.

Example 2: 73 out of 100
(73 / 100) × 100 = 73%.

Example 3: 9 out of 12
(9 / 12) × 100 = 75%.

Example 4: 45 out of 60
(45 / 60) × 100 = 75%.

These examples show how the same formula applies to quizzes, homework assignments, midterms, finals, and standardized tests.



Related percentage calculators


Once you convert a test score into a percentage, you may want to explore other percentage tools. These calculators help you understand and work with percentages in different contexts:



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