GPA scale: letter grades, percentages and points
4.0= A
Top of the standard scale
On the standard US scale an A is worth 4.0 grade points, a B 3.0, a C 2.0, a D 1.0 and an F 0. A plus adds 0.3 and a minus takes 0.3 away, so a B+ is 3.3 and an A− is 3.7.
GPA = total grade points ÷ total credit hours
- A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0
- Plus adds 0.3 and minus subtracts 0.3 on the standard scale
- Common percentage bands: 90–100 A, 80–89 B, 70–79 C, 60–69 D
- Some colleges give A+ = 4.3; others use thirds (A− = 3.67)
- Weighted scales add points for Honors and AP, so they can pass 4.0
The standard 4.0 scale
| Letter | Percent | Grade points |
|---|---|---|
| A+ | 97–100 | 4.0 |
| A | 94–96 | 4.0 |
| A− | 90–93 | 3.7 |
| B+ | 87–89 | 3.3 |
| B | 84–86 | 3.0 |
| B− | 80–83 | 2.7 |
| C+ | 77–79 | 2.3 |
| C | 74–76 | 2.0 |
| C− | 70–73 | 1.7 |
| D+ | 67–69 | 1.3 |
| D | 64–66 | 1.0 |
| D− | 60–63 | 0.7 |
| F | Below 60 | 0.0 |
Letter grades to grade points
| Grade | 4.0 scale, A− = 3.7 | 4.3 scale, A+ = 4.3 | Thirds, A− = 3.67 | Whole letters only |
|---|---|---|---|---|
| A+ | 4.0 | 4.3 | 4.0 | 4.0 |
| A | 4.0 | 4.0 | 4.0 | 4.0 |
| A− | 3.7 | 3.7 | 3.67 | 4.0 |
| B+ | 3.3 | 3.3 | 3.33 | 3.0 |
| B | 3.0 | 3.0 | 3.0 | 3.0 |
| B− | 2.7 | 2.7 | 2.67 | 3.0 |
| C+ | 2.3 | 2.3 | 2.33 | 2.0 |
| C | 2.0 | 2.0 | 2.0 | 2.0 |
| C− | 1.7 | 1.7 | 1.67 | 2.0 |
| D+ | 1.3 | 1.3 | 1.33 | 1.0 |
| D | 1.0 | 1.0 | 1.0 | 1.0 |
| D− | 0.7 | 0.7 | 0.67 | 1.0 |
| F | 0.0 | 0.0 | 0.0 | 0.0 |
Percentage to GPA calculator
Enter each class as a percentage. Each one is converted to a letter and grade points.
Why scales differ
There is no national grading scale. Schools choose whether to use plus and minus, whether an A+ is worth more than an A, and where the percentage cut-offs sit. The differences are small, but they are why two GPA calculators can disagree by a few hundredths.
Weighted scales
Many high schools add extra points for harder classes — commonly 0.5 for Honors and 1.0 for AP or IB — so an A in an AP class counts as 5.0. That is why weighted GPAs can go above 4.0 and unweighted ones cannot.
Percent to letter
Plus/minus bands split each ten points into three: 97–100 is an A+, 94–96 an A, 90–93 an A−, and so on down to 60–63 for a D−. Below 60 is an F. Your syllabus is the authority for your own class.
Where these numbers come from
The standard scale and bands follow The Princeton Review’s published table; the 4.3 scale is Stanford’s; the thirds scale is the University of Nebraska–Lincoln’s. Every source is listed on the how we calculate page.
Frequently asked questions
What is my GPA on a 4.0 scale?
Convert each grade to points (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0), multiply by each class’s credits, add up and divide by total credits. The GPA calculator does it for you.
What is a 5.0 GPA?
A 5.0 is the top of a weighted scale where AP or IB classes add a full point: straight As in all weighted classes. A few colleges also report GPA on a 5.0 scale.
Is a 2.7 GPA good?
A 2.7 is a B− on the standard scale: above a C average but below a B. Whether it is enough depends on the requirement you are measuring it against.
What is 70% in GPA?
On plus/minus bands 70% is a C−, worth 1.7. On ten-point bands 70% is a C, worth 2.0.