Convert between letter grades, percentages and the 4.0 GPA scale — the standard US grading chart, with a weighted-scale note. ✓ 4.0 scale
Standard unweighted US 4.0 scale. Percentage bands vary slightly by school.
| Letter Grade | Percentage | GPA (4.0 scale) |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A− | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B− | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| C | 73–76% | 2.0 |
| C− | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| D− | 60–62% | 0.7 |
| F | Below 60% | 0.0 |
US schools convert letter grades to grade points on a 4.0 scale: an A is worth 4.0, a B is 3.0, a C is 2.0, a D is 1.0 and an F is 0. Pluses and minuses shift the value by about 0.3 — so an A− is 3.7 and a B+ is 3.3. Your GPA is the average of these grade points across your courses, optionally weighted by credit hours.
A weighted GPA gives extra points for harder classes (honors, AP or IB), often on a 5.0 scale, so it can exceed 4.0. An unweighted GPA — the scale in this chart — caps at 4.0. To calculate your own average, use our GPA calculator or grade calculator.
Students applying between countries often need to convert grades. A US 4.0 GPA roughly maps to a UK First-Class Honours, an Australian High Distinction, and top marks in Canada — but every institution sets its own conversion, so always check the specific university's admissions guidance. This chart shows the standard US scale as a starting reference.
A grade point average looks like a universal number and is not. The familiar unweighted 4.0 scale caps at an A, while weighted scales add extra points for honours or advanced coursework and can exceed 4.0 — so two students with identical transcripts can carry different GPAs depending only on how their school computes it.
Plus and minus grades are a second inconsistency. Many institutions assign 3.7 to an A− and 3.3 to a B+; others record only whole letters. Converting a percentage into a letter is inconsistent too, since the cut-off for an A ranges from 90% to 94% across institutions, so any percentage-to-GPA table is describing one convention among several.
This is why admissions offices frequently recalculate GPA themselves, often using core academic subjects only and their own scale, and why a converted figure should be treated as an approximation. When an application asks for GPA, the number from your own institution's transcript is the one to give — converting it first introduces an error nobody asked for.