Grade Calculator
Enter your grades and weights to find your current average and what you need on the final.
Grade = \u03a3(grade\u1d62 \u00d7 weight\u1d62) / \u03a3weight\u1d62Tips & Notes
- ✓Verify weights sum to the expected total before the final.
- ✓If needed score exceeds 100, the target grade may not be achievable.
- ✓Enter all completed assignments for the most accurate projection.
- ✓Compare your grade against the syllabus grading scale, not just the standard A-F scale.
Common Mistakes
- ✗Using weights that do not sum to 100% (minus the final exam weight).
- ✗Forgetting to include all assignments in the calculation.
- ✗Confusing category weights with individual assignment weights.
- ✗Assuming all assignments are equally weighted when they are not.
Grade Calculator Overview
What This Calculator Does
The Grade Calculator computes your weighted course grade from assignment scores and their respective weights. It also calculates what score you need on your final exam to achieve a target overall grade.
Weighted vs. Unweighted Averages
In weighted grading, different assignments contribute different percentages to the final grade. A midterm worth 30% matters three times as much as a quiz worth 10%. The weighted average formula multiplies each grade by its weight, sums the products, and divides by the total weight. When weights are not provided, the calculator assumes equal weight for all entries.
Final Exam Score Needed
The calculator solves for the minimum final exam score needed to achieve your target grade. The formula rearranges the weighted average equation: needed = (target - current × (1 - finalWeight)) / finalWeight. If the needed score exceeds 100, the target may not be achievable.
Letter Grade Scale
The calculator uses the standard letter grade scale: A (93+), 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 (60-66), F (below 60). Individual institutions may use different scales.