University grade calculators
Work out your SGPA and CGPA, and convert between CGPA and percentage, using the official formulas.
Calculators
Every tool follows the official rule and links its source.
SGPA, CGPA and percentage
SGPA is the credit-weighted average of your grade points in one semester: multiply each subject's grade point by its credits, add those up, and divide by the total credits. CGPA does the same across semesters. Because both are weighted by credits, a four-credit subject moves your result twice as much as a two-credit one, which is why simply averaging grade points gives the wrong answer.
Converting CGPA to a percentage
There is no single national formula. UGC's choice-based credit system guidelines give a conversion, Delhi University notified CGPA × 9.5 for its undergraduate CBCS courses, and several universities publish their own rule. The conversion pages list each formula with the document it comes from, so you can pick the one your university actually uses instead of assuming the common 9.5 multiplier applies to you.
If your university's rule is not listed, it is because no official document for it could be found. Send us the notification and it will be added.
Why there is no single CGPA-to-percentage formula
SGPA and CGPA are calculated the same way almost everywhere, because the UGC's credit framework defines them: each is a credit-weighted average of grade points, so a five-credit paper moves your average five times as much as a one-credit paper. That is why entering credits matters, and why an ordinary average of your grades gives the wrong answer.
Converting a CGPA into a percentage is different, and this is where most published figures go wrong. There is no national formula. Each university sets its own in its regulations: some multiply by 10, some subtract a constant first, some publish a conversion table instead of a formula, and some issue a certificate stating that no conversion is permitted at all. A figure worked out with the wrong university's formula can be several percentage points out, which matters when an employer or a foreign university applies a cut-off.
The CGPA to percentage calculator therefore asks which university's rule to apply and names the regulation it is following, rather than offering one number and hoping it fits. Thereverse calculator inverts that same rule.