Grade Calculator

What this calculator does

The Grade Calculator estimates a course grade from scores and their weights. It can help track current performance or test what score may be needed on remaining assignments or exams.

How to use the calculator step by step

Enter each score and its corresponding weight or points according to the fields shown. Confirm that weights use a consistent scale and, when appropriate, add to 100%.

How the calculation works

A weighted grade is calculated by multiplying each score by its weight and adding the weighted contributions. For example, an 80% exam worth 40% contributes 32 percentage points to the final grade.

Worked example and scenario testing

Suppose homework is 90% with a 30% weight and an exam is 80% with a 70% weight. The weighted grade is 90×0.30 + 80×0.70 = 83%.

How to interpret your result

The result reflects only the scores and weights entered. Letter-grade boundaries depend on the course or institution, so an 89.5% does not automatically correspond to the same letter grade everywhere.

Accuracy, assumptions, and limitations

Dropped assignments, extra credit, curved grading, category caps, incomplete work, and institution-specific rounding rules may make an official grade different from the estimate.

Common mistakes to avoid

Do not average percentages directly when assignments have different weights. Also avoid entering 30 instead of 0.30 in a formula unless the calculator explicitly expects percentages.

Privacy and browser-based calculations

Only grades and weights are necessary. Avoid entering student names, IDs, or confidential academic records.

Frequently asked questions