CGPA to Percentage Formula
CGPA (Cumulative Grade Point Average) is converted to percentage using a multiplier that depends on the board or university. Here are the common formulas.
CBSE Formula
For CBSE class 10 and 12:
Percentage = CGPA × 9.5
Example: If CGPA is 9.2, then Percentage = 9.2 × 9.5 = 87.4%
Engineering / University (common 10-point mapping)
Many engineering colleges treat a 10-point CGPA as a linear percent mapping:
Percentage = CGPA × 10
Example: If CGPA is 8.5, then Percentage = 8.5 × 10 = 85%
VTU-style Formula (commonly referenced by calculators)
Percentage = (CGPA − 0.75) × 10
Example: If CGPA is 8.0, then Percentage = (8.0 − 0.75) × 10 = 72.5%
AKTU-style Formula (commonly referenced by calculators)
Percentage = CGPA × 10 − 7.5
Example: If CGPA is 8.0, then Percentage = 8.0 × 10 − 7.5 = 72.5%
Other Boards
Some universities use different conversion policies. Check your official notification or look for your board’s conversion chart. You can use a custom multiplier in the calculator when you have that number.