Letter Grade to GPA Converter
Convert between letter grades and GPA points in either direction: type grades to get their average on the 4.0 or 4.3 scale, or type a GPA to see the letter grade it lands on — with the full table of points and percentage bands.
Every grade counts equally here — credit hours are not part of this conversion. This table uses the 4.0 scale — an A+ is capped at 4.0, the same as an A. For a credit-weighted GPA, use the GPA calculator.
Formula and calculation
Worked example
On the 4.0 scale, for the grades A, A, A− and B+: (4.0 + 4.0 + 3.7 + 3.3) ÷ 4 = 3.75, which lands closest to an A- — the 90-92% band. In the other direction, a 3.75 GPA comes back as the same letter. Switch the scale to 4.3 and only A+ grades change value: an A+ is worth 4.3 there instead of the capped 4.0.
What the results mean
- GPA
- The grade point value on the selected scale. Converting letters, it is the average of the grades you entered — one point value each, no credit weighting; converting a GPA, it is the number you typed.
- Closest letter grade
- The closest letter on the scale's ladder. Exact halves round down, so a 3.5 GPA — halfway between a B+ (3.3) and an A− (3.7) — comes back as a B+; on the 4.0 scale an A+ shares its 4.0 with an A, so a 4.0 reads as an A.
- Percentage band
- The percentage range that letter usually stands for, from the College Board chart the grade calculator uses: A− 90–92%, B+ 87–89%, B 83–86% and so on. Points and percentages are different scales — a 3.7 is an A−, which is a 90 in most gradebooks.
Frequently asked questions
What GPA is a B+?
A B+ is 3.3 on both the 4.0 and 4.3 scales. The ladder runs A 4.0, A− 3.7, B+ 3.3, B 3.0, B− 2.7, C+ 2.3, C 2.0, C− 1.7, D+ 1.3, D 1.0, D− 0.7 and F 0, with an A+ worth 4.0 on the 4.0 scale (capped) or 4.3 on the 4.3 scale — the same values the GPA calculator uses.
What letter grade is a 3.5 GPA?
A 3.5 falls exactly between a B+ (3.3) and an A− (3.7) on either scale. This converter sends exact halves down, so it reports a B+, while a 3.51 reports an A−. Schools usually describe a 3.5 as a B+/A− average.
Where do the percentage ranges come from?
From the College Board's letter-grade chart: A− 90–92%, B+ 87–89%, B 83–86%, C+ 77–79% and so on. They are the same cutoffs the grade calculator applies, and they are typical rather than universal — your syllabus is the final word.
Is an A+ worth 4.3 or 4.0?
It depends on the scale you pick. On the 4.0 scale — the default here — an A+ is capped at 4.0, the same as an A, which is the rule most US universities use. On the 4.3 scale an A+ earns 4.3. Either way the steps are 0.3, and D+ 1.3 is a real grade on both scales.
How do I convert several grades at once?
Type one grade per line, or separate them with spaces or commas — “A B+ A-” behaves the same as three lines. Your GPA is the plain average of the points; if your courses carry different credit hours, use the GPA calculator so the heavier courses count more.