Percentage to Letter Grade Calculator
Convert a percentage score to a letter grade (A, A−, B+, …) and 4.0 GPA points on the standard US scale. Runs in your browser.
| A | 93–100 | 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 | 0–59 | 0.0 |
Standard US 90/80/70/60 scale with plus/minus grades and 4.0 GPA points. Individual schools and instructors may use different cutoffs (some omit A+ or use a straight scale) — check your syllabus.
General calculation reads
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About this tool
This converter maps a percentage score to a letter grade and the corresponding grade-point value on the most common US scale: 90 and up is an A range, 80s a B, 70s a C, 60s a D, and below 60 an F, subdivided into plus and minus bands (for example 90–92 is A−, 87–89 is B+). It also shows the 4.0-scale GPA points each letter carries, which you need when computing a GPA. The full table is displayed with your grade highlighted. One caveat worth stating: while this 90/80/70/60 scheme is the default at most US institutions, individual schools, departments, and instructors set their own cutoffs — some use a straight scale without plus/minus, some shift the A threshold, and some weight A+ as 4.0 or higher — so always defer to your syllabus for the official mapping. The conversion is exact and runs in your browser.
How to use it
- Enter your percentage score.
- Read the letter grade and its GPA points.
- See the full scale with your grade highlighted.
- Confirm against your school's official scale, which may differ.
Frequently asked questions
- What percentage is an A?
- On the standard scale, 93–100% is an A and 90–92% is an A−. Some schools treat the whole 90–100% range as a flat A. Check your syllabus, since the A− cutoff in particular varies.
- What are the GPA points for each letter?
- On the 4.0 scale: 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. These feed GPA calculations.
- Is there an A+?
- Many schools do not award A+ or cap it at 4.0 (same as A); a few use 4.3. Because it is inconsistent, this tool tops out at A = 4.0, the most common convention. Use your school's scale if it differs.
- Do all schools use the same cutoffs?
- No. The 90/80/70/60 scale is the most common, but cutoffs and plus/minus usage vary by institution, department, and instructor. Some use straight scales, curved grades, or different thresholds — your syllabus is authoritative.
- How do I turn this into a GPA?
- Multiply each course's GPA points by its credit hours, sum those, and divide by total credits. The cumulative GPA calculator does this across terms; this tool gives you the per-course GPA points to start.
- Is anything uploaded?
- No. The conversion runs entirely in your browser.