Free Grade Calculator & GPA Tools
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How to work out your grade
Most classes do not count every assignment the same. Tests might be worth half your grade, while homework is worth a small part. That is why a simple average is often wrong. You need a weighted average.
The simple rule
Multiply each score by its weight. Add those results. Then divide by the total weight. If the weights add up to 100%, you can skip the last step.
Example
Tests: 82% × 50% = 41.0
Homework: 95% × 20% = 19.0
Quizzes: 88% × 30% = 26.4
Your grade: 41.0 + 19.0 + 26.4 = 86.4% (a B)
What about the final exam?
If you know your grade now and how much the final counts, you can find the score you need. Say you have an 84% and the final is worth 25%. To finish with a 90%, you need a 108% on the final. That is not possible. To finish with an 87%, you need a 96%, which is hard but doable. Our final exam tool does this math for you.
How GPA is different
GPA turns each letter grade into points. On the usual 4.0 scale, an A is 4, a B is 3, a C is 2 and a D is 1. Each class is then weighted by its credit hours. A 4-credit class moves your GPA more than a 1-credit class. Honors, AP and IB classes often add an extra point on a weighted scale.
Tips that help
- Check your syllabus for the exact weights. Small changes matter.
- Use the same format for every score, such as percent.
- Leave out work that has not been graded yet.
- Big categories, like tests, are the fastest way to raise a grade.
Want more detail? Read our guide on how to calculate your grade average or how to calculate GPA.
Written by the Smart Grade Calculator Editorial Team. Formulas follow standard US grading practice and are checked against school handbooks. Our editorial standards. Last updated .
Frequently Asked Questions
How do I calculate my grade?
To calculate your grade, multiply each assignment score by its weight (as a decimal), then add the results together. For example, if your midterm is 85% worth 30%, your final is 92% worth 40%, and homework is 88% worth 30%, your grade is (85×0.30) + (92×0.40) + (88×0.30) = 88.7%. Our free grade calculator does this math instantly — just enter your scores and weights.
How do I calculate my GPA?
Convert each letter grade to grade points (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0), multiply each by the course's credit hours, add up the total, and divide by total credit hours. For example, an A in a 3-credit class and a B in a 4-credit class gives (4.0×3 + 3.0×4) ÷ 7 = 3.43 GPA. Use our GPA calculator to do this automatically for any number of courses.
What grade do I need on my final exam?
Use the formula: Required Final Score = (Target Grade − Current Grade × (1 − Final Weight)) ÷ Final Weight. If you have an 82% and want a 90% overall with a final worth 40%, you need (90 − 82×0.60) ÷ 0.40 = 102% — which means a 90% overall isn't reachable, so adjust your target. Our final grade calculator solves this instantly for any target.
What is the difference between weighted and unweighted GPA?
An unweighted GPA uses the standard 4.0 scale for every class regardless of difficulty. A weighted GPA adds bonus points for advanced courses — typically +0.5 for Honors and +1.0 for AP or IB classes — so it can go up to 5.0. Colleges look at both: unweighted shows raw performance, weighted shows course rigor.
Are these calculators really free?
Yes. All 23+ calculators on Smart Grade Calculator are completely free with no sign-up, no downloads, and no limits. Every calculation runs locally in your browser, so your grades and personal data never leave your device.
What is a good GPA?
A GPA of 3.0 or higher is generally considered good. Competitive colleges typically look for 3.5+, and highly selective schools expect 3.8+ unweighted. For scholarships, many programs require a minimum of 3.0–3.5. Context matters too — course rigor, class rank, and grade trends all influence how your GPA is evaluated.