🎓 CGPA to Percentage Calculator
Convert CGPA to percentage, or percentage back to CGPA, on the 10-point or 4.0 scale. Pick your institution's convention below — there is no single formula used worldwide.
This tool applies common, publicly documented conventions. Always confirm the official formula with your institution before using a converted value on any formal document.
How CGPA to Percentage Conversion Works
CGPA (Cumulative Grade Point Average) and percentage are two different ways of expressing academic performance. There is no single, universally accepted formula to convert between them — the correct method depends on the grading scale and the specific institution or examination board.
Common 10-Point Scale Formulas
Common 4.0 Scale Formula (US-style)
Many US institutions do not officially convert GPA to a percentage at all — grades are reported directly on the 4.0 scale. This conversion is a commonly used approximation, not an official standard.
Worked Example
A CGPA of 8.5 on a 10-point scale using the CBSE formula: 8.5 × 9.5 = 80.75%. The same 8.5 CGPA using the (CGPA − 0.75) × 10 formula: (8.5 − 0.75) × 10 = 77.5%. The two results differ by over 3 percentage points, which is why confirming your institution's specific formula matters.
Frequently Asked Questions
Is there one universal formula to convert CGPA to percentage?
No. There is no single worldwide formula. The correct conversion depends on your institution's grading scale (commonly 10-point or 4.0) and the specific formula your school, board, or university has officially adopted. This calculator offers the most common conventions, but you should confirm the exact formula with your institution for anything official, such as admissions or visa applications.
How do I convert CGPA to percentage on a 10-point scale?
Two conventions are common. CBSE (India) uses Percentage = CGPA × 9.5. Many other universities use Percentage = (CGPA − 0.75) × 10. Check which formula your institution specifies.
How do I convert a 4.0 scale GPA to percentage?
A common approximate method is Percentage = (GPA ÷ 4.0) × 100, though many US institutions do not officially convert GPA to a percentage at all since grades are assigned directly. Check your institution's registrar guidance if a percentage is specifically required.
Why do my university and this calculator show different percentages?
Grading conventions vary widely between countries, boards, and even individual universities. If your institution provides an official conversion formula or certificate, that value takes precedence over any general-purpose calculator.
Is my CGPA or percentage data saved anywhere?
No. Everything runs in your browser — nothing you type is sent to or stored on our servers.