Percentage calculator
Convert marks obtained and total marks into a percentage and see if you passed.
Use this tool →Know your score before the results do
Enter your subject marks and get your total, percentage, grade and GPA instantly. Free, private and built for students.
SubjectMarks obtainedTotal marks
0 / 0Total marks
0%Percentage
-Grade
CourseGradeCredits
0Total credits
0Grade points
0.00GPA (4.0 scale)
Student tools
Pick the tool that matches your question. Each one runs in your browser, so your marks never leave your device.
GPA calculator
Add courses, grades and credit hours to get your semester GPA on a 4.0 scale.
Use this tool →
Grade chart
See what percentage you need for A+, A, B, C, D and E in the default grading scale.
Use this tool →
Average marks
Find the mean of all your subjects and compare it with your target average.
Use this tool →How each tool works
A short guide to the formulas behind the results, so you can check the maths yourself.
Marks and percentage calculator
Add every subject with the marks you scored and the maximum marks. The tool adds all scores, divides by the total, and multiplies by 100. It then compares the result with your pass mark and shows the matching grade.
Percentage = (Total obtained ÷ Total marks) × 100
Example: 421 marks out of 500 gives 84.2%, which is grade A.
GPA calculator
Each letter grade is worth grade points (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0). Multiply the points by each course's credit hours, add them up, and divide by the total credits.
GPA = Σ(grade points × credits) ÷ Σ(credits)
Higher-credit courses count for more, so a B in a 4-credit course moves your GPA more than an A in a 1-credit lab.
Grade chart
The calculator uses this common scale. Your school may use different boundaries, so confirm them before you rely on a result.
A+ 90-100 · A 80-89 · B 70-79 · C 60-69 · D 50-59 · E 40-49 · F below 40
Average marks
Your average shows how steady your performance is across subjects. Use it to spot weak subjects and set a realistic target for the next exam.
Average = Sum of subject percentages ÷ Number of subjects
Why students use it
Instant results
No waiting. Results update the moment you press calculate.
Private
Your marks stay in your browser. Nothing is stored or sent.
Works on phones
Designed for small screens, so you can check marks anywhere.
Free forever
No account, no fees, no limits on how often you calculate.
About us
Students Marks Calculator was built so no student has to do exam maths on the back of a notebook. We keep the tools simple, accurate and free, and we explain the formulas so you understand every number.
Have a grading scale we should add? Use the contact link in the footer and tell us.
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Read article →How to Calculate Percentage from Marks (With Examples)
Learn the simple formula to turn marks into a percentage, with worked examples you can copy.
Read article →How to Calculate Total Marks and Percentage for Multiple Subjects
Add up marks across subjects and find your overall percentage, step by step.
Read article →Questions students ask
How do I calculate my percentage?
Divide the marks you scored by the total marks and multiply by 100. The calculator does this for every subject at once.
Is the grade scale the same at every school?
No. Boards and universities set their own boundaries. Use our scale as a guide and confirm with your institution.
Can I change the pass mark?
Yes. Type your pass percentage in the pass mark box and the status updates when you calculate.
Do you save my marks?
No. All calculations run in your browser and nothing is uploaded.