GPA Calculator
Add your courses, credit hours and grades to get your semester and cumulative GPA instantly — on the standard 4.0 scale, weighted or unweighted.
| Course | Credit hours | Type | Grade | |
|---|---|---|---|---|
The GPA formula
The grade point average is a weighted mean. For each course you earn quality points equal to the grade points for your letter grade multiplied by the course’s credit hours:
GPA = Σ(grade points × credit hours) ÷ Σ(credit hours)
Standard 4.0 grade scale
| Letter | Grade points | Percentage |
|---|---|---|
| A / A+ | 4.0 | 93–100% |
| A− | 3.7 | 90–92% |
| B+ | 3.3 | 87–89% |
| B | 3.0 | 83–86% |
| B− | 2.7 | 80–82% |
| C+ | 2.3 | 77–79% |
| C | 2.0 | 73–76% |
| D | 1.0 | 63–66% |
| F | 0.0 | Below 60% |
Worked example
Suppose you take three courses: English (3 credits, A = 4.0), Calculus (4 credits, B+ = 3.3) and Biology (3 credits, A− = 3.7).
- Quality points: (4.0 × 3) + (3.3 × 4) + (3.7 × 3) = 12 + 13.2 + 11.1 = 36.3
- Total credits: 3 + 4 + 3 = 10
- GPA = 36.3 ÷ 10 = 3.63
Weighted vs unweighted GPA
An unweighted GPA caps every course at 4.0. A weighted GPA rewards harder courses: Honors classes add +0.5 and AP/IB classes add +1.0, so an A in an AP class can be worth 5.0. Toggle “Weighted” above to compare both. Learn more in our guide to weighted vs unweighted GPA.
Semester vs cumulative GPA
Your semester GPA covers one term. Your cumulative GPA averages every term you’ve completed. Enter your previous cumulative GPA and credits in the calculator to roll this term into your overall GPA — or use the dedicated cumulative GPA calculator.
Frequently asked questions
How do I calculate my GPA?
Multiply each course’s grade points (A = 4.0, B = 3.0, …) by its credit hours to get quality points. Add up all quality points, then divide by your total credit hours. The result is your GPA.
What is the GPA formula?
GPA = (sum of grade points × credit hours) ÷ (total credit hours). This is a weighted average, so higher-credit courses count more.
What is a 4.0 GPA?
A 4.0 is a perfect GPA on the standard US scale — it means straight A’s. With a plus/minus scale, an A− (3.7) lowers the average below 4.0.
Does this calculator save my courses?
Yes — your courses are saved automatically in your browser (localStorage) and reload next time. Nothing is sent anywhere. Use “Share results” to copy a link that restores your data on any device.
Can I calculate cumulative GPA?
Yes. Enter your previous cumulative GPA and the credits earned so far, and the calculator combines them with this term to give your new cumulative GPA.