Letter Grade Converter
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Complete US Grade Scale
| Percentage Range | Letter | GPA Points | Meaning |
|---|
US Letter Grade Scale
Tap any row to convert that score instantly.
| % Range | Letter | GPA Pts | Meaning |
|---|
Common Grading Misconceptions
Quick Answers
How This Letter Grade Converter Works
You enter a percentage score. The converter looks it up against the standard US grading scale, maps it to the corresponding letter grade, and shows you the equivalent GPA points on the 4.0 scale. No formula required on your end.
Score 97-100 = A+ = 4.0 GPA points
Score 93-96 = A = 4.0 GPA points
Score 90-92 = A- = 3.7 GPA points
Score 87-89 = B+ = 3.3 GPA points
Score 83-86 = B = 3.0 GPA points
Score 80-82 = B- = 2.7 GPA points
Score 77-79 = C+ = 2.3 GPA points
Score 73-76 = C = 2.0 GPA points
Score 70-72 = C- = 1.7 GPA points
Score 67-69 = D+ = 1.3 GPA points
Score 65-66 = D = 1.0 GPA points
Score 0-64 = F = 0.0 GPA points
Table of Truth: Percentage to Letter Grade Examples
| Score | Letter | GPA Points | Meaning |
|---|---|---|---|
| 100% | A+ | 4.0 | Perfect score |
| 95% | A | 4.0 | Excellent |
| 91% | A- | 3.7 | Very Good |
| 88% | B+ | 3.3 | Above Average |
| 84% | B | 3.0 | Good |
| 81% | B- | 2.7 | Slightly Below Good |
| 78% | C+ | 2.3 | Above Average Pass |
| 74% | C | 2.0 | Average / Passing |
| 71% | C- | 1.7 | Below Average |
| 68% | D+ | 1.3 | Poor |
| 65% | D | 1.0 | Barely Passing |
| 60% | F | 0.0 | Failing |
Why the Same Percentage Can Mean Different Grades at Different Schools
This is one of the most confusing things about US grading. The standard scale uses 90/80/70/60 as the cutoffs for A/B/C/D. But many professors set their own thresholds in the course syllabus.
A professor might require 93 for an A, meaning a 91 is an A-. Another professor might set 88 as the A- cutoff. These variations are common at the college level, far less common at the high school level. The conversion table in this tool reflects the most widely used US standard, but your syllabus is always the official source.
What Does Each Letter Grade Mean for Your GPA?
Every letter grade maps to a specific number of grade points on the 4.0 scale. Those points, multiplied by credit hours, determine your GPA. Here is what each letter grade actually means in practical terms:
| Letter Grade | GPA Points | What It Means |
|---|---|---|
| A+ / A | 4.0 | You understood the material at the highest level. |
| A- | 3.7 | Excellent work; small gaps prevented a full A. |
| B+ | 3.3 | Strong performance, above the average student. |
| B | 3.0 | Good. Most graduate programs want 3.0 minimum. |
| B- | 2.7 | Slightly below the B threshold. Still respectable. |
| C+ | 2.3 | Above average pass. Doesn’t satisfy B requirements. |
| C | 2.0 | Average passing grade. The minimum for most majors. |
| C- | 1.7 | Below average; some programs require a C or better. |
| D+/D | 1.3/1.0 | Barely passing. Usually won’t satisfy major requirements. |
| F | 0.0 | Failing. Course must be retaken. Damages GPA significantly. |
Frequently Asked Questions
Is a 90% always an A in the US?
On the standard 90/80/70/60 scale, yes. But many college professors require 93 or higher for a full A, with 90-92 being an A-. High school grading is more likely to use exact 90/80/70/60 cutoffs. Always check your course syllabus for the definitive answer.
What is the difference between A and A+?
On the 4.0 GPA scale, A and A+ are both worth 4.0 points. There’s no numerical GPA difference. Some schools don’t use A+ at all. Where it exists (typically 97-100%), it’s usually an honorific recognition on the transcript but doesn’t mathematically change your GPA beyond 4.0.
Does a 79.9% round up to a B?
That’s entirely up to the professor. Most gradebooks do not automatically round up. An 79.9 is technically a C+ on the standard scale. Some professors round at 0.5 (so 79.5+ becomes a B-), but many do not. If you’re borderline, ask your professor directly before grades are finalized.
What letter grade do I need to maintain a 3.0 GPA?
You need to average a B (3.0 GPA points, roughly 83-86%) across all your courses. Some courses can be B- (2.7) or C+ (2.3) if others are B+ (3.3) or A- (3.7) to compensate. Use the GPA Calculator on SabiCalculator to see exactly how a specific grade in one course affects your overall GPA.
What is a passing grade in the US?
Typically a D (65%+) is passing in terms of receiving credit, but many programs require a C (73%+) or higher in required major courses. Graduate programs usually require a B (83%+) to consider a course passed toward degree requirements. “Passing” means different things at different levels.
