What does this tool do?
Schools report grades as percentages, letter grades or GPAs, and the conversion rules differ. This calculator uses a proportional conversion on the scale you select and adds a common letter band for reference.
The Formula
GPA = Percentage ÷ 100 × Scale maximumFrequently Asked Questions
Is a 90% always a 3.6 GPA?
On a proportional 4.0 conversion, yes. Many US schools instead map 90–92% to an A− (3.7) or 90–100% to an A (4.0), so the table matters.
Which scale should I choose?
Use the scale printed on your transcript or grading scheme. A 4.0 scale is common in the US, 5.0 in some honours systems and 10.0 in several other countries.