About this calculator
Choose the rule that matches your board or university.
How to use it
- Enter your percentage.
- Choose the conversion rule.
- Read the CGPA.
The formula
CBSE: CGPA = percentage ÷ 9.5; university: CGPA = (percentage − b) ÷ a
- a, b
- from your university’s formula % = a × CGPA + b
Worked example
81.7%
- CBSE rule: 81.7 ÷ 9.5 = 8.6.
- Simple rule: 81.7 ÷ 10 = 8.17.
What the result means
Always state which rule you used when you report a converted CGPA.
Assumptions
- 10-point CGPA.
Limitations
- Conversions are approximate; the original marksheet is the official record.
Frequently asked questions
How do I convert 75% to CGPA?
By the CBSE rule, 75 ÷ 9.5 = 7.89.
Is the 9.5 rule official for universities?
No, it is CBSE’s indicative rule; universities set their own.
Can CGPA be more than 10?
No; results are capped at 10.
Last reviewed on 3 October 2026. Found a mistake? Tell us.