Grade Calculator
Convert earned and total points into a percent, letter grade, and grade points.
What it does
A grade shows how much of the available points you earned. It is the most common way schools and courses report performance on a test or assignment.
The tool above converts earned points and total points into a percentage, a letter grade, and grade points. Enter your scores and read the result.
Letter cutoffs used here are A 90 and above, B 80 to 89, C 70 to 79, D 60 to 69, and F below 60. Schools vary, so check your syllabus for the exact scale.
Grade points translate a letter into the 4.0 scale used for GPA calculations. Plus and minus grading is not included in this simple model.
How to use
- Enter the points you earned.
- Enter the total points possible.
- Read the percentage first.
- Read the letter grade beside it.
- Read the grade points for GPA context.
Formula
- earned
- Points earned on the test or assignment.
- total
- Total points possible.
- percentage
- Earned over total, expressed as a percent.
- grade points
- 4.0 scale value for the letter grade.
The letter-to-points map is A 4.0, B 3.0, C 2.0, D 1.0, F 0.0. Cutoffs and plus/minus scales vary by school and teacher.
Worked example
Example: 85 of 100 points
Points earned 85, total points 100.
- Percentage: 85 / 100 x 100 = 85.0 percent.
- Letter: 85 falls in the B band (80 to 89).
- Grade points: B equals 3.0 on a 4.0 scale.
- An A needs 90 points, so 5.0 more points from here.
- Tool shows 85.0 percent, B, 3.0 grade points.
Reference table
| Percentage | Letter grade | Grade points |
|---|---|---|
| 90 to 100 | A | 4.0 |
| 80 to 89 | B | 3.0 |
| 70 to 79 | C | 2.0 |
| 60 to 69 | D | 1.0 |
| Below 60 | F | 0.0 |
Limits
- Letter cutoffs vary by school, teacher, and course. This model uses a common fixed scale.
- Plus and minus grades are not included.
- The tool does not weight assignments or average multiple grades.
- Percentage alone does not show effort or improvement.
Common mistakes
- Entering total points as zero, which is not allowed.
- Assuming every class uses the same A-to-F cutoffs.
- Confusing percentage with letter grade across schools.
- Using this for weighted or curved grades without adjustment.
- Entering earned points above total, which the tool rejects.
Try it yourself
Quick checks. Answers sit tucked under each question.
90 of 100 points?
90.0 percent, A, 4.0 grade points.
72 of 100 points?
72.0 percent, C, 2.0 grade points.
58 of 100 points?
58.0 percent, F, 0.0 grade points.
Questions
How is the percentage found?
Divide earned points by total points and multiply by 100.
What letter is 85 percent?
B, under the common 80 to 89 cutoff.
Do all schools use this scale?
No. Cutoffs and plus/minus grading vary, so check your syllabus.
Are grade points the same as GPA?
Grade points are the per-class value; GPA averages them across classes.
Can earned points exceed total?
No. The tool rejects it; check your numbers.
Does this include extra credit?
No. Enter earned points after any extra credit is applied.