Formula: CGPA = (Marks ÷ Total × 100) ÷ Divisor
📐 Formula
CGPA = (Marks / Total × 100) ÷ Divisor- Enter your Marks Obtained.
- Enter the Total Marks possible.
- Select the divisor your board uses — CBSE (÷9.5) or Direct (÷10).
- The tool converts your marks to a percentage and divides by the divisor to give your CGPA.
📉 Converting Absolute Marks to CGPA
The conversion follows CGPA = ((Obtained / Total) × 100) ÷ Multiplier: your marks become a percentage, and that percentage divided by the board’s multiplier gives the grade point value. For example, 450 out of 500 is 90%, which is 90 ÷ 9.5 ≈ 9.47 CGPA under CBSE or exactly 9.0 under the standard ÷10 system.
This tool is especially useful for students transitioning from an absolute-marking system to a CBCS or grade-point system — when an application form, university portal, or scholarship asks for CGPA but your marksheet only shows raw marks, the conversion takes seconds.
ℹ️ Important Note
Accuracy depends entirely on choosing the correct multiplier. CBSE uses 9.5, while most other boards and universities use 10. Always check your institution’s official conversion rule before quoting a converted CGPA on any formal document.
❓ Frequently Asked Questions
What is 450/500 marks in CGPA?
450 out of 500 is 90%, which converts to 9.47 CGPA under CBSE (÷9.5) or 9.0 CGPA under the standard ÷10 system.
How to calculate CGPA from marks manually?
Divide your obtained marks by the total marks, multiply by 100 to get the percentage, then divide by 9.5 (or your board’s multiplier).
Is 10 CGPA possible with marks?
Yes — under CBSE, an overall score of 95% or above maps to a full 10.0 CGPA.