Marks Percentage Calculator – Convert Marks to Percentage
Enter marks obtained and total marks for one or many subjects to instantly get your percentage, total score, aggregate percentage, and letter grade. Free, private, and runs entirely in your browser.
Enter Your Marks
Add subjects and marks obtainedResults
Awaiting calculationYour percentage will appear here
Enter marks obtained and total marks for each subject, then click Calculate Percentage to see your result.
What does this marks percentage calculator do?
This free online marks percentage calculator instantly converts your exam marks into a percentage. Whether you want to know your score for a single subject, calculate your aggregate percentage across all subjects, or check what grade your marks correspond to, this tool does the math for you in seconds.
Instead of reaching for a calculator or doing mental arithmetic, just enter your marks obtained and the total (maximum) marks for each subject. The calculator shows your percentage for each subject individually, your overall aggregate percentage, and a grade based on the standard grading scale. You can also see your total marks obtained versus the total maximum marks.
This tool is useful for students checking their board exam results, university semester scores, competitive exam performance, or even teachers computing percentages for a class of students. Everything runs in your browser, so your marks never leave your device.
How to calculate percentage from marks
The formula for calculating percentage from marks is simple and universal.
Percentage = (Marks Obtained ÷ Total Marks) × 100
For example, if you scored 78 out of 100 in a subject, your percentage is (78 ÷ 100) × 100 = 78%. If you scored 360 out of 500 in an exam, your percentage is (360 ÷ 500) × 100 = 72%.
Single subject vs multiple subjects
For a single subject, the formula is straightforward: divide the marks obtained by the maximum marks and multiply by 100.
For multiple subjects, you have two options. The first is to calculate the percentage for each subject separately and then average them. The second — and more common for exam results — is to add up all marks obtained across subjects, add up all maximum marks, and then apply the same formula to the totals. This calculator uses the second method, which is what most boards and universities use for aggregate results.
Overall Percentage = (Sum of All Marks Obtained ÷ Sum of All Maximum Marks) × 100
Understanding your grade
Many schools, colleges, and boards assign letter grades based on percentage. While exact thresholds vary by institution, a common scale is shown below. Always check your institution's specific grading policy for the official scale.
| Percentage Range | Common Grade | Description |
|---|---|---|
| 90% – 100% | A+ / O | Outstanding |
| 80% – 89% | A / A1 | Excellent |
| 70% – 79% | B / B1 | Very Good |
| 60% – 69% | C / B2 | Good |
| 50% – 59% | D / C1 | Satisfactory |
| 40% – 49% | E / C2 | Pass |
| Below 40% | F / Fail | Needs improvement |
Why use this marks percentage calculator?
Instant results
No server round-trip, no waiting. Your percentage appears the moment you click calculate — faster than opening a calculator app.
Multiple subjects
Add as many subjects as you need. Each one gets its own result card with percentage, marks, and grade.
Automatic grade
See a letter grade alongside your percentage based on a standard grading scale. No need to look up grade thresholds separately.
Overall aggregate
The summary box shows your total marks obtained, total maximum marks, and overall percentage across all subjects.
100% private
Everything runs in your browser. Your marks never leave your device — no server, no logs, no tracking.
Works offline
Once the page loads, you can calculate percentages without an internet connection. Bookmark it for quick access.
Who is this marks percentage calculator for?
School students
- Check your percentage after board exam results
- Calculate aggregate percentage across all subjects
- See what grade your marks correspond to
- Verify the percentage printed on your marksheet
College and university students
- Calculate semester percentage from internal and external marks
- Check aggregate percentage across multiple courses
- Convert marks into percentage for applications
- Verify percentage calculations for scholarship or admission forms
Competitive exam aspirants
- Calculate percentage scores for exams with different marking schemes
- Compare performance across practice tests with different total marks
- Track improvement in percentage terms over multiple attempts
Teachers and tutors
- Quickly calculate percentages for multiple students
- Verify student-computed percentages during result discussions
- Use as a reference when explaining percentage calculations
Tips for calculating your percentage accurately
- Use the correct total marks. Make sure you enter the maximum marks for each subject, not the passing marks. For example, if a subject is out of 100, enter 100 — not 33 or 40.
- Include all subjects. If you're calculating an overall percentage, add every subject that counts toward your result. Some boards exclude certain subjects or use a "best of" rule — check your board's policy.
- Check for grace marks or moderation. Many boards apply grace marks or moderation. Your official marksheet may show a slightly different percentage than a raw calculation.
- Understand theory vs practical weighting. If a subject has both theory and practical components, enter the combined marks and the combined maximum — not each separately.
- Round only at the end. If your board rounds percentages to two decimal places, don't round intermediate values. Calculate the final percentage first, then round.
- Verify with your marksheet. Use this calculator to double-check, but always trust the percentage printed on your official marksheet for applications and admissions.