How to calculate your grade average
Enter each assignment or exam grade in the Grade column (0–100). To use weighted averaging, enter a percentage weight in the Weight column — for example, 25 for a midterm worth 25% of your final grade. If you leave weights blank, a simple unweighted average is calculated. The letter grade is assigned using the standard US scale.
US letter grade scale
A+ = 97–100, A = 93–96, A− = 90–92, B+ = 87–89, B = 83–86, B− = 80–82, C+ = 77–79, C = 73–76, C− = 70–72, D+ = 67–69, D = 63–66, D− = 60–62, F = below 60.
Frequently Asked Questions
What if I leave the weight fields empty?
When no weights are entered, all grades are treated equally and a simple arithmetic mean is calculated.
Do the weights need to add up to 100?
No — the calculator divides the sum of (grade × weight) by the total weight, so any consistent weighting system works.