Grade Calculator
Weighted class grade from 3 assignments. Score and weight (%) for each.
What is a grade calculator?
A grade calculator works out your weighted class grade from your assignment scores and their weights. Enter each score and its weight, and it shows your grade and letter.
How to use the grade calculator
Enter the score and weight (%) for each of the three assignments, then click Calculate Grade. The weights should add up to 100.
Weighted grade formula
Weighted grade = (score1 × weight1 + score2 × weight2 + score3 × weight3) ÷ total weight. A heavier assignment counts more towards your final grade.
Example
Scores 90, 80 and 70 with weights 30, 30 and 40: (90×30 + 80×30 + 70×40) ÷ 100 = 79%, which is a C.
Letter grade scale
A 90–100, B 80–89, C 70–79, D 60–69, F below 60. So 79% is a C, not a B.
Frequently Asked Questions
What is 79% as a letter grade?
79% is a C on the standard scale. Try it on the calculator above.
How is a weighted grade calculated?
Multiply each score by its weight, add the results, and divide by the total weight. For example, (90×30 + 80×30 + 70×40) ÷ 100 = 79%.
What is an A grade?
An A grade is 90–100 on the standard scale.
Browse more calculators: Math Calculators · All Tools