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Study and exams

Percentage and marks calculator

Add the marks for each subject to get your overall percentage, or work out how many marks you need in the papers still to come. Plain, honest arithmetic, with no board-specific rules.

  • Made forClass 6 to 12, college, parents
  • Shows the workingEvery step, ready for your practical file
  • 2 calculators in oneMarks to percentage, Marks I need

Percentage from your marks

Enter the marks for each subject and the maximum marks. Empty rows are skipped.

Subjects
Reset

Result

Enter the marks for at least one subject.

What it works out

Understanding percentages and marks

A percentage is your marks as a share of a hundred: the total marks you scored, divided by the total maximum marks, times 100. It puts papers of different sizes on one scale.

The second calculator works backwards. From what you have scored so far and the marks still to come, it finds the score you need to reach the percentage you are aiming for, so you can plan revision around a real number.

Formula and worked example

Working out percentages and marks by hand

The calculator uses exactly these formulas. Write them in your notebook and check one answer by hand: it is the surest way to remember them.

The formula

  • Percentage = total marks obtained ÷ total maximum marks × 100
  • Marks needed = target % × (maximum so far + maximum to come) ÷ 100 − marks so far
total marks
the sum over the subjects you include
target %
the overall percentage you are aiming for

Worked example

Five subjects of 100 marks each

  1. Marks: English 78, Hindi 85, Maths 92, Science 88, Social Science 81.
  2. Total = 78 + 85 + 92 + 88 + 81 = 424 out of 500.
  3. Percentage = 424 ÷ 500 × 100 = 84.8%.
  4. Planning ahead: with 310 out of 400 so far and one 100-mark paper left, 80% overall needs 80% of 500 = 400, so 400 − 310 = 90 in the last paper.

Answer84.8%; and 90 out of 100 needed for 80%

In projects and exams

How students use it

Marks to percentage across subjects, and the marks you need in the exams still to come. Here is where it earns its place in a school year.

  • Checking a report card

    Add up the marks and confirm the percentage, subject by subject.

  • Planning the finals

    Know exactly what you need in each remaining paper and put your revision time where it counts.

  • Admission forms

    Forms ask for a percentage. Check whether the form wants all subjects or a best-of set, then include only those.

  • Tracking the year

    Enter each unit test to see which subject needs the most work before the term ends.

Check your work

Common mistakes to avoid

These are the slips that cost marks in exams and burn out parts on the bench.

  1. Averaging percentages of different-size papers

    A 50-mark paper and a 100-mark paper do not count equally. Add the marks, then divide by the total maximum.

  2. Including the wrong subjects

    Boards and colleges decide which subjects count. Follow the official notice for your result.

  3. Rounding too early

    Round only the final percentage, and only as your board does.

  4. Converting CGPA with a formula from the internet

    Each board and university publishes its own conversion, if any. Use theirs.

Questions

Questions about percentages and marks

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Is my percentage the same as the average of my subject percentages?

Only when every subject has the same maximum marks. Otherwise the overall percentage (total ÷ total maximum) is the correct one; the calculator shows both when they differ.

How do I convert CGPA to a percentage?

Use the conversion your own board or university publishes. It differs between them, so this calculator does not guess one.

Can I include practical and internal marks?

Yes. Add them to the subject's marks and its maximum, or enter them as separate rows, whichever matches how your result is made.

Are my marks saved anywhere?

No. Everything is worked out in your browser (or on the page you get back if JavaScript is off) and nothing is stored.

Free ebooks

Read more about percentages and marks

Free PDF ebooks in easy English: download, print and share them.

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