Marks percentage calculator

Add up every mark you obtained, add up every maximum across the same subjects, then divide and multiply by 100:

The important part is that the maximum is summed as well, not assumed. A 20 mark internal and a 100 mark theory paper carry different weight in the total, and adding the maxima is what applies that weight without any extra step.

Rows you have not filled in yet are ignored rather than counted as zeros, so the running percentage stays correct while you are still typing. A row where the marks obtained exceed the maximum is left out of the total and flagged, rather than quietly producing a percentage above 100.

It is tempting to work out each subject as a percentage and average those. That only gives the right answer when every paper is out of the same total, because a plain average treats every subject as equally important regardless of how many marks it carried.

Take two subjects: 22.5 out of 25, and 60 out of 100. As percentages those are 90% and 60%, and the average of the two is 75%. The real overall percentage is 82.5 out of 125, which is 66%. The gap is entirely down to the 25 mark paper being given four times the weight it earned.

This calculator works from the marks, never from the percentages, so that mistake cannot happen. The per-subject percentages shown in the breakdown are there to tell you where you stand, not to be averaged.

Theory 78 out of 100, practical 44 out of 50, internal 17 out of 20. The marks add up to 139 and the maxima add up to 170, so the overall percentage is 139 divided by 170, which is 81.76%.

Notice that the three subjects individually are 78%, 88% and 85%. The average of those three is 83.67%, which is not the answer, because the 100 mark theory paper pulls harder than the other two. The marks based figure of 81.76% is the one your marksheet will agree with.

How do I calculate the percentage of marks?

Add up the marks you obtained across every subject, add up the maximum marks across the same subjects, divide the first total by the second and multiply by 100. This page keeps a separate maximum for each subject, so a 50 mark paper and a 100 mark paper are weighted correctly rather than averaged as if they were equal.

Why not just average the per-subject percentages?

Because that treats every subject as equally weighted, which is only true when every paper is out of the same total. If you score 90% on a 25 mark paper and 60% on a 100 mark paper, the average of the two percentages is 75% but the real overall percentage is 66%. The calculator uses the marks, not the percentages.

Can I add more subjects?

Yes. Use the add subject button for as many rows as you need, and remove any row you do not want counted. Rows you have not filled in are ignored, so the running total stays correct while you are still typing.

Can each subject have a different maximum?

Yes, and that is the point of this page. Practicals out of 50, theory out of 100 and an internal out of 20 can all sit in the same list, and the total maximum adds up from whatever you enter.

How do I include internal assessment or practical marks?

Add them as their own rows with their own maximum marks. If your university instead scales a subject to a fixed weight before combining, apply that scaling first and enter the scaled numbers, because weighting rules differ between institutions.

Does this convert my percentage to a grade or CGPA?

No, because grade boundaries and conversion rules differ between boards and universities. Use the CGPA to percentage converter for the common conversion rules, and check your own academic regulations for the one that applies to you.