Marks Percentage Calculator
Turn raw marks into a percentage, a grade, and a plan. The Single exam tab gives the percentage, grade, and how many more marks the next grade needs. The Multiple subjects tab aggregates up to five subjects, even when their maximum marks differ, with a pass or fail verdict for each subject. The Target marks tab tells you exactly what to score to reach a target percentage.
One exam, five subjects, or a target to chase
Pass mark per subject (%)
Overall result is Pass only if every subject passes.
Grade bands follow the common A+ (90 and above) to F scale used by this calculator. Boards and universities vary, so confirm your own institution’s bands before you quote a grade.
Quick Answer
Percentage = (marks obtained / total marks) x 100. For 72 out of 100, that is 72.00%, grade B+, with 8 more marks needed for grade A. For multiple subjects, sum all obtained marks first, then divide: 391 out of 450 = 86.89%, grade A. For a target of 90% on 600 marks with 492 so far, you need 48 more marks.
- Quick Answer
- Worked examples, checked against this exact tool
- The right way to combine subjects: sum first, never average percentages
- Grade bands on this calculator
- Pass, fail, and the next grade
- CGPA, SGPA, and the percentage: converting between systems
- What competing calculators miss
- Frequently asked questions
- Add This Calculator to Your Website
- References
Worked examples, checked against this exact tool
Every number below is what the calculator itself returns for the same inputs. If you enter these values and get a different answer, something is wrong with the page, not with the arithmetic.
Single exam: 72 out of 100 = 72.00%, grade B+ (Good). Marks lost: 28. The next grade is A at 80%, so the climb is 80 minus 72 = 8 marks. At 95 out of 100 the tool returns 95.00%, grade A+, and reports that you are already at the highest grade.
Multiple subjects: 85/100, 78/100, 88/100, 72/80, 68/70. Totals: 391 out of 450 = 86.89%, grade A, all five subjects passed at the 40% pass mark. Change the last subject to 20/70 and the same tool returns 76.22%, grade B+, with an overall FAIL, because one subject sits below the pass mark even though the aggregate looks comfortable.
Target marks: with 492 out of 600 (82.00%) and a 90% target, the target total is 540 marks, so 48 more are needed. With 550 already banked, the tool reports the target as already reached.
The right way to combine subjects: sum first, never average percentages
The correct overall percentage is (sum of obtained marks / sum of maximum marks) x 100. Averaging the five subject percentages treats a 70-mark subject as equal to a 100-mark subject, and that weights the small subject too heavily.
| Method | Working on the example | Result |
|---|---|---|
| Sum first (correct) | 391 / 450 x 100 | 86.89% |
| Average of percentages (wrong here) | (85 + 78 + 88 + 90 + 97.14) / 5 | 87.63% |
When every subject has the same maximum, both methods agree, which is why the mistake hides so well. It only shows up when maximums differ, exactly the case this tab is built for. The OpenStax percent material linked in the references explains the same rescaling idea: a percentage is a score restated out of 100.
Grade bands on this calculator
These bands are the calculator’s own common scale, not a law of nature. Your board or university may use different cutoffs, so confirm locally before you quote a grade on an application.
| Percentage | Grade | Standing |
|---|---|---|
| 90–100 | A+ | Excellent |
| 80–89 | A | Very good |
| 70–79 | B+ | Good |
| 60–69 | B | Above average |
| 50–59 | C+ | Average |
| 40–49 | C | Below average |
| 30–39 | D | Poor |
| Below 30 | F | Fail |
Need that percentage in GPA terms for a college application? Our Stanford GPA calculator converts your marks to a 4.0-scale GPA. Planning a tougher course load next term? The AP class GPA calculator factors in weighted AP grades, so you can see whether the extra work actually lifts your GPA. For the reverse direction, working out what score you need on a final exam to reach a target course grade, see our grade calculator, which covers final-exam-needed and weighted-category calculations this page does not attempt.
Pass, fail, and the next grade
Most boards set the pass mark at 33 to 40% per subject, and the overall result is a pass only if every subject passes. One failed subject fails the result even at a high aggregate, as the 76.22% example above shows. The tool starts at 40% because that is the stricter and more common university figure; if your board uses 33%, set the pass mark to 33 before you read the verdicts.
The single-exam tab also computes the climb to the next grade: it finds the next threshold above your percentage and the exact marks needed, rounding up where the threshold falls between whole marks. That turns a vague aim such as “do better next time” into a number: 8 more marks for an A from 72 out of 100. Failing one subject is rarely the end of the road: most boards run compartment or supplementary exams that let you reappear in the failed subject without repeating the year, and the overall result updates once you clear it. The aggregate percentage still uses every subject’s marks, so a compartment pass repairs the result but not the average.
CGPA, SGPA, and the percentage: converting between systems
Percentage, CGPA, and SGPA all describe the same performance in different units. The conversion is always a multiplication by your board’s factor, and the factor is not universal. Getting the factor wrong is the most common conversion mistake.
CBSE’s conversion is percentage = CGPA x 9.5: a CGPA of 8.6 becomes 81.7%. The 9.5 comes from the board’s data, where students in the top band averaged about 95 marks, and 95 / 10 = 9.5. Universities publish their own formulas, and they differ by scheme and year: Anna University uses CGPA x 10 in the sources cited below, while VTU’s older schemes use (CGPA – 0.75) x 10 and its newer scheme uses CGPA x 10. Check your university’s regulations for your scheme before you convert, because two students with the same CGPA can legitimately report different percentages.
Converting the other way, percentage back to CGPA, is division by the same factor: 87.4% / 9.5 = 9.2 CGPA under the CBSE system. This direction matters whenever a cutoff is published as a CGPA and your marksheet shows a percentage. The rounding rule is the board’s, not yours: convert first, then round to the board’s precision, not before.
SGPA and CGPA differ in scope, not scale. SGPA is the credit-weighted average for one semester; CGPA is the cumulative average across all semesters completed. Both sit on the same 10-point scale, which is why the same conversion factor applies to either.
What competing calculators miss
Single-percentage tools give you a number and stop. They do not aggregate subjects, they do not judge pass or fail per subject, and they do not tell you what to aim for next. Multi-subject tools that do aggregate often stop at the total, with no target mode and no next-grade climb. Articles that explain the sum-then-divide rule usually carry no tool at all, so the reader still has to do the arithmetic by hand.
This page runs all three modes in one tool, enforces the correct aggregation method, adds per-subject pass or fail verdicts, and adds the next-grade climb and the target-marks quota. One honest limit: the tool takes up to five subjects. If your board counts only your best five, enter those five. If your marksheet carries more counted subjects than five, the tool cannot hold them all at once, and you should not silently drop a subject to force a fit.
Frequently asked questions
Add This Calculator to Your Website
References
- College Board. About AP Scores. Accessed October 25, 2026.
- Cambridge International. Cambridge IGCSE programme. Accessed October 25, 2026.
- Khan Academy. Converting decimals to percents. Accessed October 25, 2026.
- OpenStax, Rice University. Prealgebra 2e: Understand Percent. Accessed October 25, 2026.
- UCAS. UCAS Tariff points and entry requirements. Accessed October 25, 2026.
- StudyToolset. CGPA to Percentage: Convert Instantly. Accessed October 25, 2026.