Quick answer: Marks percentage = (marks obtained ÷ total marks) × 100. For example, 437 out of 500 gives (437 ÷ 500) × 100 = 87.4%. This free marks percentage calculator converts any score into a percentage with a matching letter grade, and works for single papers, term exams and full results from any exam system.
Last reviewed: September 2026
Key facts
- Percentage = obtained ÷ total × 100 — the universal formula.
- Grade bands here: A+ ≥95, A ≥90, B ≥80, C ≥70, D ≥60, F below 60.
- Grading scales vary by school and country — confirm your institution's bands for official use.
- Half a mark can move a grade boundary — always use exact totals.
This free marks percentage calculator turns any obtained and total score into an exact percentage with a matching letter grade, no manual division needed. It works for single subject papers, term exams and full final results of any kind. Results work for any exam system worldwide.
Enter your marks and get the answer instantly. No sign-up, works on mobile and desktop.
How to use
- Enter your obtained marks.
- Enter the total marks of the exam.
- Read your percentage and grade.
How marks percentage is calculated
| Term | Meaning |
|---|---|
| Obtained | The marks you scored. |
| Total | The maximum marks of the paper or exam. |
Example: 920 out of 1100 → 920 ÷ 1100 × 100 = 83.64%.
Worked examples
Overall percentage across subjects with different totals
To combine several subjects, add all the obtained marks together and all the maximum marks together, then apply the formula once. Do not average the individual subject percentages — that gives the wrong answer when the totals differ. Example: you score 78/100 in Mathematics, 65/80 in Science and 42/50 in English. Total obtained = 78 + 65 + 42 = 185. Total maximum = 100 + 80 + 50 = 230. Percentage = (185 ÷ 230) × 100 = 80.43%. Averaging the three subject percentages (78%, 81.25%, 84%) would incorrectly give 81.08%.
920 out of 1100
920 ÷ 1100 × 100 = 83.64% → grade B.
45 out of 50
45 ÷ 50 × 100 = 90.00% → grade A.
| Marks | Percentage |
|---|---|
| 450 out of 500 | 90% |
| 170 out of 200 | 85% |
| 92 out of 100 | 92% |
| 920 out of 1100 | 83.64% |
Grade bands used here (indicative)
| Percentage | Grade |
|---|---|
| 95 – 100 | A+ |
| 90 – 94 | A |
| 80 – 89 | B |
| 70 – 79 | C |
| 60 – 69 | D |
| Below 60 | F |
Frequently asked questions
How do I calculate my marks percentage?
Divide obtained marks by total marks and multiply by 100. For example, 920 out of 1100 = 83.64%.
What grade is 85%?
On the bands used here, 85% is a B (80–89). Note that grading scales differ between schools and countries.
Can I use this for a single subject paper?
Yes — enter the subject's obtained and total marks. It works for any paper, test or full exam.
Why does my school's grade differ from this calculator?
Schools use different grade boundaries. This calculator uses a common generic scale; your institution's official bands take precedence.
How do I find the average of several subjects?
Add all obtained marks, add all total marks, then use this calculator on the two sums. Or use our average calculator for a full breakdown.
How many marks do I need for a target percentage?
Multiply the paper's total marks by the target percentage, then divide by 100. For example, to score 90% on a 500-mark paper you need 500 × 90 ÷ 100 = 450 marks. Enter any target into the calculator workflow by using this reverse formula first.
Sources
- QS Top Universities — Grading system guides
Key takeaways
- Percentage = obtained ÷ total × 100.
- 920/1100 = 83.64% (B); 45/50 = 90.00% (A).
- Grade bands vary — confirm your school's scale for official use.
- Use exact totals; rounding early can shift a grade.
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