About this calculator
Bands vary between universities, so the full table is shown to compare with your own.
How to use it
- Enter your marks.
- Enter the maximum marks.
- Read the grade.
The formula
Percentage = marks ÷ maximum × 100, then read the grade from the bands
- O
- 90 and above, 10 points
- A+
- 80–89, 9 points
- P
- 40–49, 4 points
Worked example
72 out of 100
- Percentage = 72%.
- Grade A (Very good), 8 grade points; US letter grade C−.
What the result means
Use the SGPA calculator to combine grade points across subjects.
Assumptions
- Absolute grading.
Limitations
- Relative grading and university-specific bands are not modelled.
Frequently asked questions
What percentage is an O grade?
Typically 90% and above.
How many points is A+?
9 on the 10-point scale.
Why is my US grade lower?
US letter bands start higher; 72% is a C− there.
Last reviewed on 3 October 2026. Found a mistake? Tell us.