Grade Percentage Calculator
Calculate test and exam percentage scores with letter grade conversions and step-by-step arithmetic.
Grade percentage
Grade formula
Convert raw score points into an accurate percentage score:
Multiply the quotient by 100 to yield standard percentage format.
Standard grading scale reference
| Letter Grade | Percentage Range | Standard GPA |
|---|---|---|
| A | 90% – 100% | 4.0 |
| B | 80% – 89.9% | 3.0 |
| C | 70% – 79.9% | 2.0 |
| D | 60% – 69.9% | 1.0 |
| F | Below 60% | 0.0 |
Frequently asked questions
How do you calculate a test grade percentage?
Divide the number of points earned by the total points possible and multiply by 100: Grade (%) = (Points Earned ÷ Total Points) × 100. For example, 43 out of 50 is (43 ÷ 50) × 100 = 86.00% (Letter Grade B).
What is the standard letter grade scale?
A standard academic scale is: 90%–100% = A, 80%–89.9% = B, 70%–79.9% = C, 60%–69.9% = D, below 60% = F. Many schools use +/- brackets (such as 87%–89% for B+).
How do you round exam percentages?
Most educational institutions round to the nearest whole percentage or one decimal place (e.g., 89.5% rounds up to 90.0% A-). Check your instructor's specific course syllabus for their policy.
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