Marks Percentage Calculator
Calculate your percentage from marks obtained out of the maximum marks, for any subject or total.
Formula last reviewed 4 August 2026 · How we verify our calculators
Percentage
- Marks obtained
- 450
- Marks lost
- 50
Updates live as you type
Frequently asked questions
Divide the marks you obtained by the maximum marks and multiply by 100. Scoring 450 out of 500 is (450 ÷ 500) × 100 = 90%.
Add up the marks obtained in all subjects and divide by the total maximum marks of all subjects, then multiply by 100. Enter those two totals here.
Yes — work with totals. Sum the obtained marks and sum the maximums across subjects, regardless of whether each paper was out of 50, 100 or anything else.
Use our percentage-to-CGPA converter, which divides your percentage by an editable factor (9.5 by the common CBSE rule).
Averaging percentages across subjects gives the wrong number
450 marks obtained out of a maximum of 500 is a clean 90% — (450 ÷ 500) × 100, 50 marks lost. That much is straightforward. Where people go wrong is combining several subjects with different maximums: averaging each subject's individual percentage directly gives a different, incorrect answer than the actual overall percentage, because it silently treats a subject scored out of 50 as equally weighted to one scored out of 200.
The right way to combine subjects with different maximums
Instead of averaging percentages, add up all the marks scored across every subject, separately add up all the maximum marks across those same subjects, and run those two totals through this calculator as one combined obtained-and-maximum pair. That correctly weights subjects with a higher maximum more heavily in the final figure — exactly the weighting a naive average of percentages misses entirely, and exactly the mistake that produces a marksheet-official percentage that doesn't match a quick mental calculation.
Why the same formula scales to any total
(obtained ÷ maximum) × 100 works identically whether the maximum is 50, 100, 500 or any custom total specific to an exam board — scoring 68 out of 80 uses the exact same calculation as 450 out of 500, giving 85%, with no need to first convert either score onto a common scale.
This is useful for report cards, exam results, eligibility cut-offs and application forms that specifically ask for a percentage rather than a grade or CGPA. If a grade-point figure is needed instead, the percentage-to-CGPA converter takes this result and turns it into an estimated CGPA using an editable multiplier.