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Marks to Percentage Calculator

The marks to percentage calculator at allgradecalculator.com works for every grading system that reports raw marks. Enter your subjects, the marks you obtained, and the maximum marks for each. The tool sums everything and returns your percentage along with a standard US letter grade.

SubjectMarksOut of
Total marks
480 / 600
Percentage
80%
Letter grade
B-
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My overall result: 480/600 marks = 80% (B-) — calculated at allgradecalculator.com
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When to use the marks to percentage calculator

Most boards, universities, and schools award raw marks rather than percentages. To compare results across institutions, decide whether you cleared a percentage cut-off, or fill out a job application that asks for a percentage, you need to convert those marks. The marks to percentage calculator at allgradecalculator.com handles any number of subjects with any maximum marks per subject.

Step-by-step

  1. List every subject (or assignment) on its own row.
  2. Type the marks you received in the Marks column.
  3. Type the maximum marks for that subject in the Out of column.
  4. Read the total, percentage, and letter grade in the result tiles.

How letter grades are assigned

The letter grade tile uses the standard US plus-minus scale: A+ at 97%+, A at 93–96%, A− at 90–92%, B+ at 87–89%, B at 83–86%, and so on down to F below 60%. If your school uses a different scale, the percentage number is the universal one to cite.

Tips

  • Round only the final percentage — never round individual marks before summing.
  • Include practical and theory marks separately if your transcript splits them.
  • If your school drops the lowest score, simply omit that row.
  • For Pakistan / Indian school boards with custom scales, see the matric percentage calculator or CBSE calculator instead.

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Frequently asked questions

How is percentage calculated from marks?

Percentage = (total marks obtained ÷ total maximum marks) × 100. The calculator does this across every row you enter.

Can subjects have different maximum marks?

Yes — set each row’s "Out of" column independently. The total is the sum of all maximums.

Does it support more than 8 subjects?

Yes — duplicate or add rows as needed by editing the subject list. The tool has no hard cap.