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Switch between the official CBSE formula (for the 10-point CGPA used in Classes 9-10) and a generic converter for any other GPA scale, such as a 4.0 or 5.0 scale used by many universities.
CBSE's own published formula for the 10-point CGPA scale is: Percentage = CGPA × 9.5. CBSE describes this as an indicative formula for the overall percentage; your official mark sheet is always the final record.
Yes — use the "Custom GPA Scale" tab and enter your scale's maximum (e.g. 4.0), and the calculator applies the straightforward proportional formula: Percentage = (GPA ÷ Max Scale) × 100.
It gives the standard overall-percentage equivalent CBSE itself publishes for the 10-point CGPA scale. It is not a substitute for marks-based calculations some subjects or boards may require — check your board's own guidance if you need a legally exact figure.
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