Grade average calculator

Choose the grading method your course uses, enter your scores, and select Calculate average. Add up to 30 grades, or remove rows you do not need. The grade average calculator shows the resulting percentage and how much each row contributes.

When all grades count equally

Add the percentage grades together, then divide by the number of grades. For 90%, 80%, and 100%, the sum is 270 and the average is 90%. This method assumes each grade has the same influence, regardless of an assignment’s point total.

Simple grade average = sum of percentage grades ÷ number of grades

When assignments have different weights

Select Use custom weights. Enter a percentage score and its relative weight for each row. An 80% test worth 60% of the course and a 100% project worth 40% give an average of 88%: 80 × 0.60 + 100 × 0.40.

Weighted grade average = sum of (grade × weight) ÷ sum of weights

The weights do not need to add to 100. Entering weights of 3 and 2 has the same effect as 60 and 40. A zero weight excludes that row from the average; at least one row must have a positive weight.

Earned points versus percentage grades

If your course adds points together, select Use earned and possible points. A score of 5 out of 10 plus 90 out of 100 gives 95 out of 110, or about 86.3636%. Averaging the individual percentages instead would give 70%, because it would make the smaller assignment count equally.

Points average = total points earned ÷ total possible points × 100

Possible points must be positive, and earned points must be between zero and the possible points. To include extra credit, enter your resulting percentage in equal or weighted mode; those modes accept scores above 100%, up to 1,000%.

A current average is not always a final grade

If you enter only completed work, the tool calculates an average over those entries. A remaining exam, a dropped assignment, a category rule or a minimum exam score could change your final grade. Include a missing assignment as zero only when your course actually counts it that way.

Letter grades and rounding

There is no universal percentage-to-letter conversion. Check your syllabus or school’s grading scale before calling a result an A or B. This tool keeps the result as a percentage and rounds only the displayed output to four decimal places.

The Calculator.net grade calculator explanation describes the weighted-average approach. If your course weights categories, first calculate each category’s average, then enter those category averages and their course weights here.