Convert a 4.0-scale GPA/CGPA into an approximate percentage, or the other way around.
Uses the common approximation Percentage = GPA × 25. Some universities publish their own official conversion table — check yours if this matters for an official submission.
Percentage = GPA × 25 is a widely used rule of thumb on a 4.0 scale (since 4.0 × 25 = 100), but it isn't a universal standard — some universities publish their own official conversion table that can give a different result.
Since the conversion scales 4.0 up to 100, a GPA slightly above 4.0 (sometimes possible with bonus grading) would otherwise produce a percentage above 100%, so the result is capped at the maximum valid percentage.
Treat it as a quick estimate only. If the conversion is for an official submission, check whether your specific institution publishes its own GPA-to-percentage table, since the ×25 approximation may not match it exactly.