How it works
The calculator adds the marks you scored and the maximum marks, then divides one by the other and multiplies by 100. Subjects may have different maximums, for example 80 for one paper and 100 for another: marks are added, percentages are not averaged, which is the correct method. Leave a row empty and it is ignored.
Best of five and English plus four
Choose "Best 5" to count only your five strongest subjects. If the rule you are following says a certain subject must always be counted, usually English, put that subject in the first row and choose "The first subject" under "Always include". The result lists which subjects were counted and which were left out, so you can show the working if asked.
Remember that CBSE awards no aggregate and CISCE's rule about five subjects is a pass rule. Whether you may use best of five is decided by the college or employer. See best of five explained.
Theory, practical and internal marks
If a subject total is made of parts, enter the subject total, for example 76 out of 100 for 54 in theory and 22 in practical. Or enter the parts as separate rows; the overall percentage is the same either way.
What to do with the result
"Copy the working" puts the list of subjects, the totals and the percentage on your clipboard. Round only at the end, and do not round up across a cut-off. More in how to calculate percentage.
Questions people ask
How do I calculate the percentage of 5 subjects?
Add the marks of the five subjects, divide by the total maximum marks and multiply by 100. With 406 out of 500 the percentage is 81.2.
Is best of five allowed for CBSE?
CBSE itself awards no overall aggregate or division. Whether best of five is accepted depends on the college or employer asking for the percentage.
My subjects have different maximum marks. What do I do?
Enter each subject with its own maximum. The calculator adds marks and maximums separately, which is the correct way.
Are my marks stored?
Only in your own browser, so that they are still there when you come back. Nothing is sent to us. "Clear" removes them.
Check with your board or university. The rules quoted on this site were read in the official documents on 12 November 2026. Boards and universities revise them, and yours may differ. For anything that decides an admission or a job, use the rule printed on your own mark sheet or in your institution's regulations. This is an independent site.