Grade Average Calculator
Calculate the simple average of multiple percentage grades. Enter your scores to see your overall average, letter grade, highest score and lowest score.
Calculate your average grade
Enter each percentage grade. Every entered score counts equally.
How to use the Grade Average Calculator
- Enter each percentage grade. Add quiz, test, homework, project or assignment percentages one at a time.
- Add more rows if needed. Use Add another grade for as many scores as you want.
- Calculate. The calculator adds all entered grades and divides by the number of grades.
- Review the result. See the average, letter grade, number of grades, highest score and lowest score.
Use this calculator when every entered grade should count equally.
Grade average formula
Average grade = Sum of all percentage grades ÷ Number of grades
Example: 88%, 92%, 76% and 95% total 351. Divide 351 by 4 to get 87.75%.
Worked example
| Grade | Score |
|---|---|
| Grade 1 | 88% |
| Grade 2 | 92% |
| Grade 3 | 76% |
| Grade 4 | 95% |
(88 + 92 + 76 + 95) ÷ 4 = 87.75%
Simple average vs weighted average
A simple average gives every entered percentage the same importance. A weighted average gives more influence to assignments or categories worth a larger share of your course.
If your syllabus uses weights, use the Weighted Grade Calculator.
Common letter-grade scale
| Average percentage | Common letter grade |
|---|---|
| 90% and above | A |
| 80–89.99% | B |
| 70–79.99% | C |
| 60–69.99% | D |
| Below 60% | F |
Grade Average Calculator FAQs
How do I find my average grade?
Add all percentage grades together and divide by the number of grades.
Can I average grades above 100%?
Yes. Scores above 100% can be included for extra credit.
Should missing assignments be entered as zero?
Enter zero only when the assignment officially counts as a zero. Leave ungraded work blank.
Why is my average different from my weighted grade?
A simple average gives every score equal importance. A weighted grade uses assignment or category weights.
Is this the same as a GPA calculator?
No. This calculator averages percentages. GPA uses grade points and may use credit hours.
Can this tell me what I need on my final exam?
No. Use the Final Grade Calculator for that.
Need a weighted course average?
Use course weights from your syllabus when some assignments or categories count more than others.