Grade Percentage to Letter Grade Chart
Official US Standard 10-Point Grading Scale with Percentage Ranges
| Letter Grade | Percentage Range | Standard 4.0 GPA | Academic Standing |
|---|---|---|---|
| A+ | 97.0% – 100% | 4.0 | Extraordinary Mastery |
| A | 93.0% – 96.9% | 4.0 | Superior Performance |
| A- | 90.0% – 92.9% | 3.7 | Excellent Achievement |
| B+ | 87.0% – 89.9% | 3.3 | Very Good Comprehension |
| B | 83.0% – 86.9% | 3.0 | Solid Good Performance |
| B- | 80.0% – 82.9% | 2.7 | Above Average Standard |
| C+ | 77.0% – 79.9% | 2.3 | Competent / Fair |
| C | 73.0% – 76.9% | 2.0 | Satisfactory Core Credit |
| C- | 70.0% – 72.9% | 1.7 | Minimum Standard Prerequisite |
| D+ | 67.0% – 69.9% | 1.3 | Below Benchmark Standard |
| D | 60.0% – 66.9% | 1.0 | Minimum Passing (Non-Transferable) |
| F | 0.0% – 59.9% | 0.0 | Failing (No Credit Awarded) |
- In many school districts, scores with decimals ending in .5 or higher are rounded up to the next full percentage.
- Some high schools do not award an A+ or treat A and A+ as identical 4.0 grade point equivalents.
Related Grading Reference & Calculators
A comprehensive reference mapping each letter grade to its corresponding quality point value across different academic course rigor levels.
Reference table defining collegiate letter grade criteria, minimum passing benchmarks, and Latin Honor GPA thresholds (Cum Laude, Magna Cum Laude, Summa Cum Laude).
A handy point-by-point matrix mapping raw scores to percentages.
Official US 10-point scale with percentage cutoffs.
Convert numerical test percentages into standard letter marks.
Translate class percentage directly into 4.0 quality points.
Continuous percentage ratios vs discrete letter grade tiers.
Step-by-step guide converting raw assignment points to percent.
10-point scales, 7-point scales, and percentage thresholds.
Authoritative References & Academic Standards
Vetted against official government, institutional, and collegiate guidelines
Comprehensive historical and institutional documentation of standard 10-point scales, percentage cutoffs, and GPA conversion tables.
National academic standards for undergraduate 4.0 quality points, credit-hour weighting, and transcript calculations.
State education agency standards defining 70% passing cutoffs, secondary course credit minimums, and standard assessment rules.