Grade Calculator
Turn a test score into a percentage and letter grade, or find the marks needed for a target. Shows the steps.
Grade Calculator
What This Grade Calculator Does
Enter the points earned and the total points to get the score as a percentage and a letter grade. Switch modes to find how many marks you need for a target percentage.
How It Works
score % = (points earned / total points) x 100
marks needed = total points x (target % / 100)The letter grade uses the common scale below.
Letter Grade Scale
| Percentage | Grade |
|---|---|
| 90% and up | A |
| 80–89% | B |
| 70–79% | C |
| 60–69% | D |
| below 60% | F |
How to Use It
- Choose test score to grade or marks needed for a target.
- Enter the points (and the target percentage in the second mode).
- Read the percentage and grade, or the marks needed.
Worked Examples
| Points earned | Total points | Score | Grade |
|---|---|---|---|
| 85 | 100 | 85% | B |
| 45 | 50 | 90% | A |
| 27 | 40 | 67.5% | D |
| 18 | 20 | 90% | A |
Marks needed: for a 90% target out of 200 points, you need 200 x (90 / 100) = 180 points.
FAQ
How do you calculate a grade percentage?
Divide the points earned by the total points and multiply by 100. For 85 out of 100:
(85 / 100) x 100 = 85%.
What letter grade is my score?
This tool uses the common scale: 90%+ is an A, 80–89% a B, 70–79% a C, 60–69% a D, and below 60% an F. Your school’s scale may differ.
How many marks do I need for a target grade?
Switch to “marks needed for a target”, enter the total points and the target percentage, and the tool shows the marks required.
Is this the same as a percentage calculator?
The score math is the same as “A is what percent of B”. This page adds the letter grade and the marks-needed mode. For other percentage questions, use the percentage calculator.