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GPA Calculator
Calculate your semester GPA from course grades and credit hours on the 4.0 scale.
Students10.0 total credits · 37.9 grade points
A college GPA is a credit-weighted average: an A in a 4-credit course counts more than an A in a 1-credit lab. This calculator does that weighting for you. Add a row for each course, choose the letter grade and enter the credit hours, and your GPA updates live on the standard US 4.0 scale, alongside your total credits and total grade points so you can check the arithmetic yourself.
How to use the GPA Calculator
- Add one row per course.
- Select the letter grade you earned in each course.
- Enter the credit hours for each course.
- Read your GPA, total credits and total grade points.
Formula
Grade points follow the 4.0 scale: A = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, B- = 2.7, C+ = 2.3, C = 2.0, C- = 1.7, D+ = 1.3, D = 1.0, D- = 0.7, F = 0.0.
Worked example
You earn an A in a 4-credit course and a B in a 3-credit course. Grade points = (4.0 x 4) + (3.0 x 3) = 16 + 9 = 25. Total credits = 7. GPA = 25 / 7 = 3.57. Notice the A pulls the average up more than the B pulls it down, because it carries more credit hours.
Good to know
Most colleges recalculate GPA exactly this way each semester, but policies differ on three points worth checking on your own transcript: whether plus/minus grades are used at all, whether repeated courses replace or average the first attempt, and whether pass/fail courses are excluded (they normally are). A semester GPA below 2.0 triggers academic warning or probation at many US colleges, and many scholarships and honours programmes set their line at 3.0 or 3.5, which is why a quick check before grades are final is worthwhile.
US grading scale reference
The table below is the US plus/minus scale used across this site. Where this tool offers other scales, the Canadian scale sets an A from 85% with a pass at 50%, and the Australian scale uses the bands HD (85%+), D (75-84%), C (65-74%), P (50-64%) and F (below 50%) on a 7.0 GPA.
| Letter grade | Percentage | GPA points |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A- | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B- | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| C | 73–76% | 2.0 |
| C- | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| D- | 60–62% | 0.7 |
| F | 0–59% | 0.0 |
Frequently asked questions
How is GPA calculated?
Each letter grade is converted to grade points (A = 4.0, B = 3.0, and so on), multiplied by the course credit hours, and the totals are divided by the total credit hours.
What is a good college GPA?
A 3.0 (B average) is the common line for good standing and many internships. A 3.5 and above is competitive for honours and graduate applications. Our guide on what counts as a good GPA breaks the ranges down by goal.
Do credit hours really change the result?
Yes. An A in a 4-credit course adds 16 grade points; an A in a 1-credit course adds 4. Two students with the same letters can have different GPAs if their credit loads differ.
Should I include pass/fail courses?
No. Pass/fail courses are excluded from GPA at almost every college. Leave them out of the calculator so they do not dilute the average.
How do I calculate GPA across several semesters?
Use the Cumulative GPA Calculator, which weights each semester by its credits, or add every course from every semester into this calculator at once.
Go deeper
Prefer the full walkthrough? Read our guide: How to Calculate Your GPA, Step by Step — it explains the method step by step with more worked examples.
Sources & further reading
- College Board BigFuture — How to Calculate Your GPA on a 4.0 Scale — The most widely cited US reference for letter-grade to 4.0-scale conversion.
- National Center for Education Statistics (US Department of Education) — Official US education data on grading, attainment and outcomes.
Related tools
Last reviewed: November 2026. Results from this calculator are estimates based on the published scales above; your school's recorded grade is the official one.