Grade Calculator

Each assignment category (homework, midterm, final exam, etc.) is assigned a weight that represents its percentage of the total grade. Your score in each category is multiplied by its weight, and the results are summed. For example, if homework is 30% of your grade and you scored 85%, that category contributes 85 × 0.30 = 25.5 percentage points to your final grade.

The 'What do I need on the final?' section takes your current grade in all other categories, the weight of the final exam, and your target final grade, then solves for the required final exam score. The formula is: required = (target - current grade × (1 - final weight)) / final weight.

This calculator normalizes your weights automatically. If your entered weights sum to less than 100%, the calculator still computes a weighted average based on the categories you have entered. A warning is shown when the total weight is not 100% so you know the result may not reflect your syllabus exactly.

Yes. Set all category weights to the same value (for example, all at 1 or all at the number of assignments) and the weighted average reduces to a simple arithmetic mean of your scores.

This calculator uses the standard US grading 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), and F (below 60). Your actual letter grade boundaries may differ depending on your school or professor.