Education
Grade Percentage Calculator
Turn assignment, quiz, or test points into a grade percentage and letter grade, or work backward from a target percentage to the points needed.
Result
—
- Percentage
- —
- Decimal
- —
- Letter grade
- —
Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What this grade percentage calculator solves
| Mode | Use it when | Output |
|---|---|---|
| Points earned | You know earned points and total points | Percent grade, decimal, simplified fraction, and letter grade |
| Points missed | You know lost points and total points | Earned score and percent grade |
| Target percentage | You want a specific percentage | Points needed and points you can miss |
Formula
How to use it
Enter the total points possible, then enter either points earned, points missed, or the target percentage you want to reach.
How to interpret the answer
The percent is the earned-to-possible ratio multiplied by 100. The letter grade is a common scale, not a guarantee of how your teacher rounds or curves grades.
Common mistakes
- Use points, not number of questions, when questions have different values.
- Do not round the percentage until the final answer.
- Check whether your class rounds 89.5% to 90% before treating a borderline result as official.
Worked examples
36 out of 40
Convert points to percent
Result
90%
4 points missed
Calculate from missed points
Result
90%
Need 90%
Find points needed for a target
Result
67.5 points
Extra-high score
Score above the base total
Result
105%
Frequently asked questions
How do I convert points to a percentage?+
Divide points earned by points possible, then multiply by 100. For example, 36 out of 40 is 36 / 40 x 100 = 90%.
How do I calculate a grade from points missed?+
Subtract points missed from points possible to get points earned, then divide by points possible and multiply by 100.
Can this calculate how many points I need for an A?+
Yes. Choose Target percentage, enter the point total, and enter the percentage cutoff you want, such as 90%.
Is this the same as the test grade calculator?+
This page focuses on the point-to-percentage conversion. The test grade calculator adds extra-credit handling and points-to-next-letter details.
Related calculators
Test Grade Calculator
Calculate a test percentage and letter grade from points earned, points missed, or a target grade.
Final Grade Calculator
Find the score you need on a final exam or project your course grade from a known final score.
Weighted Grade Calculator
Calculate a weighted course grade from category scores and weights, or find the score needed on remaining weighted work.
Percentage Calculator
Calculate percent of a number, part-to-whole percentages, percent change, missing wholes, and reverse percent changes.
Grade Calculator
Calculate a class grade from points earned, points possible, extra credit, and a target percentage.
Grade Drop Calculator
Calculate a grade average after dropping the lowest quiz, test, homework, or assignment scores.
Last updated: May 8, 2026