Excellent — almost a clean A.
Letter Grade to GPA Calculator
Pick a letter grade and see its GPA value on the 4.0 scale along with the corresponding percentage range. This is the standard US conversion used by most colleges and high schools. Use it when you're tallying a class grade, filling out an application, or just need to know what a B+ is worth in GPA points.
How it works
Each letter grade maps to a fixed GPA value on the standard 4.0 scale:
Letter grade → GPA value (and matching percentage range)The plus/minus modifiers shift the GPA by 0.3 in either direction (with A+ capped at 4.0 on most unweighted scales).
Example calculation
You finish a course with a B+ on your transcript. On the standard 4.0 scale, B+ = 3.3 GPA points, equivalent to a percentage in the 87–89% range. So that course contributes 3.3 to your GPA before applying credits.
Full conversion table
| Letter | GPA | Percentage |
|---|---|---|
| A+ | 4.0 | 97–100% |
| A | 4.0 | 93–96% |
| A− | 3.7 | 90–92% |
| B+ | 3.3 | 87–89% |
| B | 3.0 | 83–86% |
| B− | 2.7 | 80–82% |
| C+ | 2.3 | 77–79% |
| C | 2.0 | 73–76% |
| C− | 1.7 | 70–72% |
| D+ | 1.3 | 67–69% |
| D | 1.0 | 65–66% |
| D− | 0.7 | 60–64% |
| F | 0.0 | Below 60% |
Who can use this
- • High school and college students
- • Anyone with letter-graded transcripts
- • International applicants to US schools
- • Teachers and counsellors
- • Parents reviewing report cards
Why use it
- • Instant lookup
- • Standard US 4.0 scale
- • Percentage range included
- • Free and no signup
- • Works on any device
Frequently asked questions
How do I convert a letter grade to a GPA?
Look up the letter grade on the standard US 4.0 scale. Each letter has a fixed GPA value — for example, A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, and so on.
What is an A− in GPA?
An A− is worth 3.7 GPA points on the standard 4.0 scale, corresponding to a percentage range of 90–92%.
What is a B+ in GPA?
A B+ is worth 3.3 GPA points and represents a percentage range of 87–89%.
Does every school use plus and minus grades?
No. Some schools only report whole letters (A, B, C, D, F), in which case A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0.
Is A+ worth more than 4.0?
On most unweighted scales, no — A+ and A both equal 4.0. Some schools award 4.3 for A+, and weighted scales (honors, AP) can go higher.
How do I calculate overall GPA from multiple letters?
Convert each letter to GPA points, multiply by credits for each course, sum the totals, then divide by total credits. Use a full GPA calculator for that workflow.
Is the calculator free?
Yes, fully free and works without signup.