GPA Scale Converter
A GPA scale converter: turn a letter grade into grade points, a percentage into a letter, or a GPA into a percentage range, on the scale your school uses.
Result
Letter grade
B+
Grade points
3.33
B+ is worth 3.33 grade points on the Plus/minus (A 93–100) scale.
On this scale
- Percentage range
- 87–89%
Worked out in your browser. Nothing you type is sent to us.
The working
Plus/minus (A 93–100)
| Letter | Percent | Grade points | |
|---|---|---|---|
| A | 93–100% | 4.00 | |
| A- | 90–92% | 3.67 | |
| B+ | 87–89% | 3.33 | ← this grade |
| B | 83–86% | 3.00 | |
| B- | 80–82% | 2.67 | |
| C+ | 77–79% | 2.33 | |
| C | 73–76% | 2.00 | |
| C- | 70–72% | 1.67 | |
| D+ | 67–69% | 1.33 | |
| D | 63–66% | 1.00 | |
| D- | 60–62% | 0.67 | |
| F | below 60% | 0.00 |
How do you convert a letter grade to GPA?
Look the letter up on your school's scale: each letter has a fixed number of grade points. On the plus/minus scale used in the example, a B+ is worth 3.33 grade points and covers 87–89%. Scales differ, so the same letter can be worth 3.3 at one school and 3.33 at another, and some charts have no plus or minus grades at all.
Percentage to letter, and GPA to percentage
Type a percentage (87) to see its letter and grade points, or grade points (3.0) to see the letter and its percentage range. A GPA that falls between two letters, such as 3.5, isn't a letter grade: it is an average, and the converter says which two letters it sits between.
To turn a whole term of grades into a GPA, use the GPA calculator, or the high school GPA calculator for weighted and unweighted GPA.
Every scale, side by side
Plus/minus scale (A 93–100, A- 90–92 … D- 60–62), as used by Green Bay Area Public Schools, Wisconsin
| Grade | Percent | Grade points |
|---|---|---|
| A | 93–100 | 4.0 |
| A- | 90–92 | 3.67 |
| B+ | 87–89 | 3.33 |
| B | 83–86 | 3.0 |
| B- | 80–82 | 2.67 |
| C+ | 77–79 | 2.33 |
| C | 73–76 | 2.0 |
| C- | 70–72 | 1.67 |
| D+ | 67–69 | 1.33 |
| D | 63–66 | 1.0 |
| D- | 60–62 | 0.67 |
| F | below 60 | 0.0 |
Source: Green Bay Area Public Schools (WI): Grading Scale, checked October 18, 2026. Green Bay gives the plus and minus grades in thirds of a point (A- 3.67, B+ 3.33); many schools round these to 3.7 and 3.3, so check your own handbook. F* (fail, no credit), P (pass), INC (incomplete), MX (medical excuse) and NG (no grade) are not counted in GPA. The page sets no honors or AP weighting: the weighting boxes in the calculator are your school's rules. Not counted in GPA: F*, P, INC, MX, NG.
4.0 scale with plus and minus grades (A+ = 4.0)
| Grade | Grade points |
|---|---|
| A+ | 4.0 |
| 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 |
| F | 0.0 |
Source: UC Santa Cruz General Catalog: Grade Points, checked October 18, 2026. The same values (A 4.0, A- 3.7 ... D- 0.7, F 0) are used by Indiana University and the University of Tennessee. P and NP are not counted in GPA; I and IP carry no grade points until a final grade replaces them. Not counted in GPA: P, NP, I, IP.
College Board 4.0 chart (A 90–100, B 80–89, C 70–79, D 65–69)
| Grade | Percent | Grade points |
|---|---|---|
| A | 90–100 | 4.0 |
| B | 80–89 | 3.0 |
| C | 70–79 | 2.0 |
| D | 65–69 | 1.0 |
| F | below 65 | 0.0 |
Source: College Board BigFuture: How to Convert Your GPA to a 4.0 Scale, checked October 18, 2026. College Board calls this one commonly used system and says your school may differ. Its chart lists D as 66–69 and E/F as below 65, which leaves 65 itself unassigned; we count 65 as a D. The chart has no plus or minus grades, so B+ counts as a B on this scale.
10-point scale (A 90–100, B 80–89, C 70–79, D 60–69), as used statewide in North Carolina
| Grade | Percent | Grade points | Honors | AP / IB / college |
|---|---|---|---|---|
| A | 90–100 | 4.0 | 4.5 | 5.0 |
| B | 80–89 | 3.0 | 3.5 | 4.0 |
| C | 70–79 | 2.0 | 2.5 | 3.0 |
| D | 60–69 | 1.0 | 1.5 | 2.0 |
| F | below 60 | 0.0 | 0.0 | 0.0 |
Source: Onslow County Schools (NC): Grading Scale, under NC State Board of Education policy GRAD-009, checked October 18, 2026. Quality points: standard A 4, B 3, C 2, D 1, F 0; honors add 0.5; AP, IB and college (CCP) courses add 1.0; an F earns 0 at every level. Weights: Source: NC Department of Public Instruction: AP/IB/CIE Coursework, checked October 18, 2026. "The state course weighting system awards the equivalent of one (1) quality point to the grade earned in an AP/IB/CIE course." The 0.5 honors weight is from the Onslow County table above.
Questions students ask
What GPA is an 87%?
Is a B+ a 3.3 or a 3.33?
What percentage is a 3.0 GPA?
Sources and method
- Plus/minus scale (A 93–100, A- 90–92 … D- 60–62), as used by Green Bay Area Public Schools, Wisconsin. Source: Green Bay Area Public Schools (WI): Grading Scale, checked October 18, 2026. Green Bay gives the plus and minus grades in thirds of a point (A- 3.67, B+ 3.33); many schools round these to 3.7 and 3.3, so check your own handbook. F* (fail, no credit), P (pass), INC (incomplete), MX (medical excuse) and NG (no grade) are not counted in GPA. The page sets no honors or AP weighting: the weighting boxes in the calculator are your school's rules.
- 4.0 scale with plus and minus grades (A+ = 4.0). Source: UC Santa Cruz General Catalog: Grade Points, checked October 18, 2026. The same values (A 4.0, A- 3.7 ... D- 0.7, F 0) are used by Indiana University and the University of Tennessee. P and NP are not counted in GPA; I and IP carry no grade points until a final grade replaces them.
- College Board 4.0 chart (A 90–100, B 80–89, C 70–79, D 65–69). Source: College Board BigFuture: How to Convert Your GPA to a 4.0 Scale, checked October 18, 2026. College Board calls this one commonly used system and says your school may differ. Its chart lists D as 66–69 and E/F as below 65, which leaves 65 itself unassigned; we count 65 as a D. The chart has no plus or minus grades, so B+ counts as a B on this scale.
- 10-point scale (A 90–100, B 80–89, C 70–79, D 60–69), as used statewide in North Carolina. Source: Onslow County Schools (NC): Grading Scale, under NC State Board of Education policy GRAD-009, checked October 18, 2026. Quality points: standard A 4, B 3, C 2, D 1, F 0; honors add 0.5; AP, IB and college (CCP) courses add 1.0; an F earns 0 at every level.
- Course weights. Source: NC Department of Public Instruction: AP/IB/CIE Coursework, checked October 18, 2026. "The state course weighting system awards the equivalent of one (1) quality point to the grade earned in an AP/IB/CIE course." The 0.5 honors weight is from the Onslow County table above.