How to Calculate Grades

Grades can usually be calculated with points, percentages or weighted categories. The exact method depends on how your teacher, school or university measures performance.

Percentage grade formula

Use: earned points divided by total possible points multiplied by 100. Example: 36 out of 40 = 36 ÷ 40 × 100 = 90%.

Weighted grade formula

Weighted grades are used when parts of a course count differently. Multiply each score by its weight, add the results, then divide by total weight.

Final exam grade formula

To calculate the score needed on a final, use your current grade, desired grade and the final exam weight. The calculator on this site does the equation for you.

Tips for accurate results

Use the official syllabus, include all assessed work, check whether extra credit is allowed and confirm the official grading scale before making academic decisions.