About this tool
Type one subject per line, like 'Maths 87/100' or 'Physics 64 70'. The calculator adds them up, works out your percentage and grade, and can drop the weakest subject for a best-of-five score.
How to use it
- Enter your numbers in the boxes, or drag the sliders.
- Read the result on the right. It updates as you type.
- Open the year-by-year table, if shown, to see how the numbers change over time.
- Use 'Copy link with these values' to save the calculation or send it to someone.
Questions
How is marks percentage calculated?
Total marks obtained ÷ total maximum marks × 100. Adding raw marks, not averaging subject percentages, gives the correct result when subjects have different maximums.
What are the CBSE grades?
A1 91–100, A2 81–90, B1 71–80, B2 61–70, C1 51–60, C2 41–50, D 33–40, and E (needs improvement) below 33.
What is best of five?
Many admissions use the five highest subject scores, usually including English. Turn on 'Best of five' to see that percentage.
Last reviewed 16 October 2026. Results are estimates for planning. Check important figures with your bank, employer or a qualified adviser.