Marks to Percentage Calculator
Convert your marks score to a percentage instantly.
Enter Your Marks
Formula Used
Percentage = (Marks Obtained ÷ Total Marks) × 100
Example: 78 out of 90 → (78 ÷ 90) × 100 = 86.67%
About This Calculator
This tool converts any raw marks score to a percentage by dividing the marks obtained by the total maximum marks, then multiplying by 100. It also shows the equivalent letter grade and 4.0 GPA estimate.
For multiple subjects, use our Grade Percentage Calculator which handles subject-by-subject entry and overall percentages.
Common Conversions
| Marks (out of 100) | Percentage |
|---|---|
| 100/100 | 100% |
| 90/100 | 90% |
| 80/100 | 80% |
| 75/100 | 75% |
| 70/100 | 70% |
| 60/100 | 60% |
| 50/100 | 50% |
| 40/100 | 40% |
Frequently Asked Questions
Percentage = (Marks Obtained ÷ Total Maximum Marks) × 100. Example: 72 out of 90 → (72 ÷ 90) × 100 = 80%.
75 out of 100 is 75%. On a standard grading scale this corresponds to a B+ or similar.
First convert your marks to a percentage using this tool, then use our Percentage to GPA Calculator to convert that percentage to a GPA value.
Marks are the raw score (e.g. 72 out of 90). Percentage normalizes that score to a scale of 0–100, making it comparable across exams with different maximums.
Required marks = (Target Percentage ÷ 100) × Total Marks. For 80% in a 150-mark exam: (80 ÷ 100) × 150 = 120 marks.