Marks Percentage Calculator

What this tool does

Enter marks obtained and total marks for one or more subjects and this tool calculates the percentage for each, plus a combined overall percentage across every subject listed. It also shows an illustrative grade band next to each result, and a donut chart of marks obtained versus missed, so a report card full of raw numbers turns into one clear overall figure.

Report cards usually list raw marks per subject, but admissions forms and scholarship criteria almost always ask for a percentage. This calculator converts any number of subjects at once and adds up an overall percentage across all of them, rather than making you work out each ratio separately.

How to use Marks Percentage Calculator

1. Gather the marks obtained and total marks for each subject from your report card or mark sheet.
2. Enter one subject per line as subject,obtained,total — for example Maths,78,100.
3. Add every subject you want included in the overall percentage.
4. Read the overall percentage at the top, calculated from the combined totals of all subjects.
5. Check the illustrative grade band shown alongside the percentage.
6. Open the subject breakdown table to see each subject's individual percentage and grade.

Tips for better results

• Make sure the total for each subject reflects its actual maximum marks; mixing subjects out of 100 with subjects out of 50 is fine as long as each total is correct.
• Use the overall percentage, not an average of individual percentages, when subjects have different total marks, since this calculator correctly weights by actual marks rather than simple averaging.
• Exclude optional or non-credit subjects if your institution's official percentage calculation does not count them.
• Keep subject names short and distinct so the breakdown table stays easy to scan.

Common use cases

• Converting a school report card of raw subject marks into one overall percentage for a scholarship application.
• Checking your own total against a university's published cutoff percentage before applying.
• Quickly working out how a missing or re-checked subject score would shift your overall result.
• Comparing percentages across two exam attempts to track improvement subject by subject.

Common mistakes to avoid

• Entering marks obtained that exceed the subject's total, which the calculator rejects since it is not a valid score.
• Averaging individual subject percentages instead of using total marks obtained divided by total marks possible, which gives a different and less accurate overall figure when totals differ.
• Using the illustrative A–F grade band shown here as if it were an official grading scheme, when your school or exam board likely publishes its own exact cutoffs.
• Forgetting to separate internal assessment marks from final exam marks if your institution reports them differently.