Math

Grade Calculator

Calculate your weighted final grade and letter grade by entering assignment scores and category weights.

CategoryScore (%)Weight (%)Remove

Enter at least one score and weight to see your grade.

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Weighted Grade Formula

The weighted average grade accounts for the relative importance of each assignment or category.

Weighted Average = Σ(Score × Weight) ÷ Σ(Weight)

Example: (85 × 30 + 72 × 40 + 90 × 30) ÷ 100 = 81.3%

Understanding Weighted Grades

Most courses assign different levels of importance to different types of assessments. Homework might count for 20% of your grade while the final exam counts for 40%. Simply averaging all your scores without accounting for these weights would give you an inaccurate picture of your overall grade.

A weighted grade calculation solves this by multiplying each score by its weight before averaging. The result reflects how much each component actually matters to your final mark, giving you a precise view of where you stand and what you need on remaining assessments to reach your goal.

Use this calculator to track your grade throughout the semester, plan for upcoming tests, or verify a grade your institution has calculated.

Frequently asked questions

How does a weighted grade calculator work?
A weighted grade calculator multiplies each category score by its corresponding weight, sums all the weighted scores, and divides by the total weight. This ensures that a high-weight category like a final exam has more impact on your overall grade than a low-weight assignment.
Do my category weights have to add up to 100%?
No, this calculator normalises weights automatically so they do not need to sum to exactly 100. If your weights total 90, each weight is treated as a proportion of that 90. However, entering weights that sum to 100 makes the percentages easier to interpret at a glance.
What letter grade corresponds to each percentage range?
Common grade scales are A (93–100), 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). Different institutions may use slightly different cutoffs.
What score do I need on my final exam to get a certain grade?
You can work backwards by entering your current scores and adjusting the final exam score until the weighted average reaches your target. Some teachers call this a 'what do I need on my final' calculation, and it is one of the most common uses of a grade calculator.
Can I use this for university courses with unequal assignment weights?
Yes. Enter each graded component as its own row with the correct weight. For example, you could add quizzes at 20%, a midterm at 30%, projects at 20%, and a final exam at 30%, and the calculator will compute the accurate weighted average across all of them.
How do I calculate my grade if I have missing assignments?
Leave any missing or future assignments blank. The calculator only includes rows where both a score and a weight are provided. This lets you see your current standing based on completed work alone while planning what you need on remaining assessments.

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