Convert percentages and letter grades
Convert a percentage to a letter grade — or a letter to its percentage range.
Result
Enter a percentage or pick a letter to see the conversion and the full grading scale.
How this calculator works
A letter grade is found by checking which band of the grading scale your percentage falls into. Each band starts at a minimum percentage and runs up to just below the next band.
Example on the standard US scale: 87.5% falls in the B+ band (87% to 89.99%). On the UK degree scale the same mark would be a First (70% and above), and on a common Australian scale it is a High Distinction (85% and above).
Some teachers round percentages before assigning letters (for example 89.5% becomes 90%, an A−). You can switch rounding on in the grading scale settings.
Grading scale used by default
United States — letter grades with +/−. The most common US high school and college scale. Many schools use it, but cut-offs vary — always check your syllabus.
| Grade | Percentage |
|---|---|
| A+ | 97% and above |
| A | 93% – 96.99% |
| A− | 90% – 92.99% |
| B+ | 87% – 89.99% |
| B | 83% – 86.99% |
| B− | 80% – 82.99% |
| C+ | 77% – 79.99% |
| C | 73% – 76.99% |
| C− | 70% – 72.99% |
| D+ | 67% – 69.99% |
| D | 63% – 66.99% |
| D− | 60% – 62.99% |
| F | 0% – 59.99% |
Grading scales differ between countries, schools and even individual courses. Use the grading scale button in the calculator to switch to a US, UK, Canadian or Australian scale, or to enter your own cut-offs.