This free online grade calculator combines the scores and weights of multiple assessments, such as tests, homework, and exams, into one final weighted percentage and letter grade. Add each assessment's score and weight below to see where you stand.
How to Use the Grade Calculator
Enter the "Score (%)" you earned on each assessment.
Enter the "Weight (%)" that assessment counts toward your final grade.
Click "Add Assessment" to include more rows, or the × button to remove one.
Click "Calculate" to see your Final Grade and Letter Grade.
Frequently Asked Questions
Each score is multiplied by its weight, those weighted values are added together, and the sum is divided by the total weight: Final Grade = ∑(score × weight) ÷ ∑(weight).
It maps your final percentage to A for 90% and above, B for 80-89%, C for 70-79%, D for 60-69%, and F for below 60%.
Any assessment with a weight of 0 or a non-numeric score or weight is excluded from the calculation. If every row is invalid, the calculator asks you to add at least one assessment with a weight greater than 0.
Yes, it's completely free with no sign-up required.