How to Calculate Your Grade (Free Weighted Tool)
Most courses do not weight everything equally; a final exam might count for 40 percent while homework counts for 10. To know your real standing you have to weight each piece correctly. This guide explains weighted grades and walks you through the Grade Calculator, which combines your assignments, tests and exams, each with its own weight, into your overall class grade. Leave the final blank to see where you stand on completed work. It is free, private and runs in your browser.
How a weighted grade works
A weighted grade multiplies each score by its weight, adds them up, and divides by the total weight:
Grade = sum(score x weight) / sum(weight)
If homework is worth 20 percent and you scored 90, that contributes 90 x 0.20 = 18 points. Do the same for every category and add them. When all weights add up to 100 percent, the result is your overall grade. If you have not completed everything yet, dividing by the weight you have finished tells you your current standing on graded work so far.
How to use the Grade Calculator
Work out your grade in a minute:
- Open the Grade Calculator.
- Add each component: homework, quizzes, tests, projects, exams.
- Enter the score and the weight (percent) for each.
- Read your overall weighted grade.
- To see where you stand now, leave the final exam blank; the tool grades the work you have completed.
Add or remove rows as needed so the calculator matches your exact syllabus.
A worked example
Suppose your syllabus is: homework 20 percent, midterm 30 percent, final 50 percent. You scored 95 on homework and 80 on the midterm.
- Homework: 95 x 0.20 = 19
- Midterm: 80 x 0.30 = 24
- Completed weight: 50 percent; current grade on done work: (19 + 24) / 0.50 = 86
If you then score 90 on the final:
- Final: 90 x 0.50 = 45
- Overall grade: 19 + 24 + 45 = 88
So a strong final lifts your 86 up to an 88.
Percentage to letter grade scale
Most schools convert a percentage to a letter grade on a scale like this:
| Percentage | Letter | GPA points |
|---|---|---|
| 93 to 100 | A | 4.0 |
| 90 to 92 | A- | 3.7 |
| 87 to 89 | B+ | 3.3 |
| 83 to 86 | B | 3.0 |
| 80 to 82 | B- | 2.7 |
| 70 to 79 | C | 2.0 |
| 60 to 69 | D | 1.0 |
| below 60 | F | 0.0 |
Scales vary by school, so check your syllabus. To turn letter grades into a GPA across courses, use the GPA Calculator.
Use cases and tips
A grade calculator is useful when you want to:
- See your current standing before a big exam
- Work out the score you need on the final to reach a target
- Decide where to focus your study time
- Double-check a grade your teacher posted
Tip: focus your effort on high-weight components, where each point moves your grade the most. For a quick percentage on a single test, the Percentage Calculator is faster. Explore more in calculators.
Private and free in your browser
The Grade Calculator runs entirely in your browser. Your scores and weights are never uploaded or stored, so your grades stay private. There is no sign-up and no limit on calculations. Use the Grade Calculator throughout the term to stay on top of your progress. Find more study tools in all tools.
Try the tool from this guide
Grade Calculator
Weighted class grade from your assignments.
Open Grade CalculatorFrequently asked questions
Is the grade calculator free?
Yes. It is completely free with no sign-up. Enter your scores and weights to see your overall weighted grade instantly.
Is it private?
Yes. The calculator runs in your browser, so your grades and scores are never uploaded or stored anywhere.
How is a weighted grade calculated?
Multiply each score by its weight, add the results, and divide by the total weight. When weights total 100 percent, the result is your overall grade.
Can I see my grade before the final?
Yes. Leave the final exam blank and the calculator shows your current grade based only on completed work, so you know where you stand.
What grade do I need on the final?
Enter your completed scores and weights, then adjust the final score until the overall grade hits your target. That tells you the score you need to earn.
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