Letter grade converter
Convert between a percentage, a US letter grade and GPA points on a 4.0 scale. The tool uses one common scale, and the real cut-offs depend on your school or course.
Runs in your browser: nothing you enter is sent anywhere.
How to use it
- Choose whether to start from a percentage, a letter or GPA points.
- Enter the value.
- Read the letter, the GPA points and the percent range for that letter.
How it works
The converter holds one table of lower limits and points: 97 (A+, 4.0), 93 (A, 4.0), 90 (A-, 3.7), 87 (B+, 3.3), 83 (B, 3.0), 80 (B-, 2.7), 77 (C+, 2.3), 73 (C, 2.0), 70 (C-, 1.7), 67 (D+, 1.3), 63 (D, 1.0), 60 (D-, 0.7) and 0 (F). A percentage earns the first letter whose limit it reaches, so 92.99 is still an A- and 93 is an A.
Worked example
A score of 92.5 is below 93, so it is an A- worth 3.7 points; that grade covers 90 to 92 percent. A score of 87 is a B+, 3.3 points. For a C, the range is 73 to 76 and the points are 2.0.
Tips
- If your school rounds scores, apply its rounding rule first. This tool does not round for you.
- Keep the course syllabus at hand: when it publishes a scale, that scale wins over any converter.
Frequently asked questions
Which grading scale does this use?
A common US scale. A is 93 and above, A- 90 to 92, B+ 87 to 89, B 83 to 86, B- 80 to 82, and so on in steps of 3 or 4 points down to D- at 60 to 62. Below 60 is F. A+ starts at 97 and counts as 4.0.
Why does my school give a different letter?
Schools and teachers set their own cut-offs. Some use 90, 80, 70 and 60 for A to D with no plus or minus, some give 4.3 for A+, and some count 59.5 as a pass. Check your syllabus or handbook for the real scale.
How does a GPA turn into a letter?
The tool picks the highest letter whose points do not exceed the GPA. A GPA of 3.5 sits between B+ (3.3) and A- (3.7), so it shows B+. A 4.0 shows A.
Is the 4.0 GPA unweighted?
Yes. These are the base points. Honours, AP and IB courses are often weighted by an extra point, and this tool does not add that.