Add marks from multiple subjects and instantly get your overall percentage.
The Marks to Percentage Calculator adds up marks from every subject — even if each subject has a different maximum — and computes your true overall percentage with Total Obtained ÷ Total Maximum × 100. This is exactly how report cards and university transcripts calculate aggregate percentage across mixed-weight subjects.
Add a row per subject, enter the marks you scored and that subject's maximum marks, then hit calculate. Great for board exam results, semester report cards, and combining theory + practical marks into one final percentage.
Once you have your percentage, see what CGPA it equals with Percentage to CGPA, or check exactly how many marks you'd need to reach a higher target with the Marks Needed Calculator.
Marks to percentage conversion turns your raw score — marks obtained out of a maximum — into a standardised value between 0% and 100%. It's the most common way to compare performance across subjects, exams, and even different boards, since not every exam uses the same maximum marks.
Whether you're combining CBSE board subjects, adding up semester papers, or working out a single test score, the underlying formula stays the same. What changes is how you aggregate multiple subjects — which is exactly what the calculator above handles when subjects carry different maximum marks.
Percentage = (Marks Obtained ÷ Total Marks) × 100
For multiple subjects with different maximums, the correct method isn't to average each subject's percentage — it's to sum obtained marks and sum maximum marks first, then divide:
Overall % = (Σ Obtained ÷ Σ Max Marks) × 100
This is the same weighted method the calculator above uses, and it's how report cards and transcripts calculate aggregate percentage.
Example 1 — Out of 100 (Single Subject)
Scored 78.5 out of 100 → (78.5 ÷ 100) × 100 = 78.50%
Example 2 — Out of 200 (Entrance Test)
Scored 147 out of 200 → (147 ÷ 200) × 100 = 73.50%
Example 3 — Out of 500 (CBSE Class 12, 5 subjects)
Scored 425 out of 500 → (425 ÷ 500) × 100 = 85.00%
Example 4 — Out of 600 (6 subjects, 100 each)
Scored 453 out of 600 → (453 ÷ 600) × 100 = 75.50%
Example 5 — Out of 720 (NEET)
Scored 612 out of 720 → (612 ÷ 720) × 100 = 85.00%
Example 6 — Mixed Maximums (Different Subject Totals)
Math 88/100, Physics 42/50, Computer Practical 27/30 → Total obtained = 157, Total max = 180 → (157 ÷ 180) × 100 = 87.22%
This is exactly what the multi-subject calculator above solves automatically.
| Marks | Grade | Grade Point |
|---|---|---|
| 91–100 | A1 | 10 |
| 81–90 | A2 | 9 |
| 71–80 | B1 | 8 |
| 61–70 | B2 | 7 |
| 51–60 | C1 | 6 |
| 41–50 | C2 | 5 |
| 33–40 | D | 4 |
| Below 33 | E | 0 |
CBSE percentage from grade points: Sum of Grade Points ÷ 5 × 9.5
| Percentage | IB Grade |
|---|---|
| 99–100 | 7 |
| 92–98 | 6 |
| 84–91 | 5 |
| 77–83 | 4 |
| 70–76 | 3 |
| 50–69 | 2 |
| Below 50 | 1 (Fail) |
| Uniform Mark % | Grade |
|---|---|
| 90–100 | A* |
| 80–89 | A |
| 70–79 | B |
| 60–69 | C |
| 50–59 | D |
| 40–49 | E |
| 30–39 | F (IGCSE only) |
| 20–29 | G (IGCSE only) |
Need to go the other way? Use:
Marks Obtained = (Percentage ÷ 100) × Total Marks
Example: 85% on an exam out of 500 → (85 ÷ 100) × 500 = 425 marks.
For target-score planning — finding out exactly how many marks you still need to hit a goal — use the Marks Needed Calculator.
We sum all 'marks obtained' values and all 'max marks' values separately, then divide the totals: Overall % = (Σ Obtained ÷ Σ Max) × 100. This correctly weights subjects with higher maximum marks.
Yes — that's exactly what this calculator is built for. Each row can have its own maximum, and the tool aggregates everything correctly.
Not quite. Averaging individual percentages treats every subject equally regardless of weight. This tool instead computes a true weighted aggregate based on total marks, which matches how most institutions calculate overall percentage.
Absolutely — add every subject from your semester or full-year result to get one accurate overall percentage.
Yes. The formula works for any maximum — enter your obtained and total marks for each subject, and the calculator handles the rest, even if totals differ across subjects.
Add each subject as a row with its scored and maximum marks (usually 100 per subject, 500 total for 5 subjects), then hit Calculate. The tool sums everything and gives your board exam percentage.
Yes — enter your score and the exam's maximum (JEE Main: 300, NEET: 720) to get a percentage. Note that percentile/rank (used by CAT) is different from percentage; this tool calculates percentage only.
No problem — the calculator accepts decimal values for both obtained and maximum marks and returns results to two decimal places.
Yes — use Marks Obtained = (Percentage ÷ 100) × Total Marks, or use our Marks Needed Calculator for target-score planning.
Averaging treats every subject equally regardless of its maximum marks. This calculator computes a true weighted percentage based on total obtained vs total maximum — the same method used by most institutions.
No — everything is calculated in your browser and never sent to or stored on any server.
Usually due to rounding conventions or grace marks applied by your institution. See the Common Mistakes section above for full details.