GPA Calculator
Enter your courses, letter grades and credits to get your unweighted and weighted GPA on the 4.0 scale, and combine it with a previous GPA for a cumulative figure.
Cumulative GPA (optional)
Enter your GPA and credits from previous semesters to combine them with the courses above.
Total credits (or courses) that GPA is based on.
- Total credits this term
- 4
- Quality points (unweighted)
- 14
- Quality points (weighted)
- 15.5
- Courses counted
- 4
| Course | Grade | Credits | Points | Quality pts | Weighted pts | Weighted quality |
|---|---|---|---|---|---|---|
| English | A | 1 | 4 | 4 | 4 | 4 |
| Algebra II | B+ | 1 | 3.3 | 3.3 | 3.8 | 3.8 |
| Biology | A- | 1 | 3.7 | 3.7 | 4.7 | 4.7 |
| History | B | 1 | 3 | 3 | 3 | 3 |
| Letter | Points | Honors | AP / IB |
|---|---|---|---|
| A / A+ | 4 | 4.5 | 5 |
| A- | 3.7 | 4.2 | 4.7 |
| B+ | 3.3 | 3.8 | 4.3 |
| B | 3 | 3.5 | 4 |
| B- | 2.7 | 3.2 | 3.7 |
| C+ | 2.3 | 2.8 | 3.3 |
| C | 2 | 2.5 | 3 |
| C- | 1.7 | 2.2 | 2.7 |
| D+ | 1.3 | 1.8 | 2.3 |
| D | 1 | 1.5 | 2 |
| D- | 0.7 | 1.2 | 1.7 |
| F | 0 | 0 | 0 |
How this was calculated
- Convert each letter to grade points on the 4.0 scale: A = 4, B+ = 3.3, A- = 3.7, B = 3.
- Multiply by credits to get quality points: 4 × 1 = 4; 3.3 × 1 = 3.3; 3.7 × 1 = 3.7; 3 × 1 = 3.
- GPA = total quality points ÷ total credits = 14 ÷ 4 = 3.5.
- Weighted: add 0.5 for honors and 1 for AP/IB to each passing grade (Algebra II 3.3 → 3.8, Biology 3.7 → 4.7), then repeat: 15.5 ÷ 4 = 3.875.
How this GPA calculator works
A GPA calculator converts each letter grade to points on the 4.0 scale, multiplies by the course's credits to get quality points, adds the quality points up, and divides by the total credits. Credits matter: an A in a 4-credit course lifts your GPA more than an A in a 1-credit lab. In high school most year-long classes count as 1 credit (semester classes 0.5), so the GPA is close to a plain average of your grades. In college, courses are usually 3 or 4 credits and the weighting is more noticeable.
Worked example
Four high-school courses, 1 credit each: English A (4.0), Honors Algebra II B+ (3.3), AP Biology A- (3.7) and History B (3.0). Quality points are 4.0 + 3.3 + 3.7 + 3.0 = 14.0 over 4 credits, so the unweighted GPA is 3.50. For the weighted GPA, honors adds 0.5 and AP adds 1.0: Algebra II becomes 3.8 and Biology 4.7, the total becomes 15.5, and the weighted GPA is 3.88. A college example: Calculus A (4 credits, 16 quality points), Chemistry C (3 credits, 6 points), Writing A- (3 credits, 11.1 points) and History B+ (3 credits, 9.9 points) give 43 points over 13 credits, a 3.31 GPA.
Unweighted vs. weighted GPA
Unweighted GPA caps at 4.0 and treats every class the same. Weighted GPA rewards harder classes: a common scheme, used here, adds 0.5 for honors and 1.0 for AP, IB and dual-enrollment courses, so an A in AP is a 5.0. Schools vary a lot; some add the bonus only for grades of C or better, some use a 6.0 scale, and some report both numbers on the transcript. Colleges typically recalculate GPA using their own rules, often unweighted and core-subject only, so treat the weighted figure as the one your school reports and the unweighted one as the portable comparison.
Cumulative GPA across semesters
To fold this term into your overall record, enter your GPA so far and the credits it covers. The combined GPA is (prior GPA × prior credits + this term's quality points) ÷ all credits. A 3.2 over 60 credits plus a 3.8 over 15 credits gives (192 + 57) ÷ 75 = 3.32. The more credits you have already, the less any single term can move the number, which is why raising a GPA senior year is slow going.
Common mistakes
- Counting pass/fail or withdrawn courses. P, W and I grades usually carry no grade points and no credits toward GPA. Leave them out.
- Using the wrong scale for plus/minus. Many schools make an A- a 3.7 and a B+ a 3.3 (used here), but some use 3.67 and 3.33, and some ignore plus and minus entirely. Check your transcript.
- Mixing credits and hours. Credits, credit hours and units are the same thing for this purpose. Do not enter contact hours or weeks.
Frequently asked questions
›How is GPA calculated?
Convert each letter grade to points (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0, with +0.3 or −0.3 for plus and minus), multiply by the course credits, add the results and divide by the total credits.
›What is the difference between weighted and unweighted GPA?
Unweighted GPA tops out at 4.0 and treats every class the same. Weighted GPA adds a bonus for harder classes, commonly 0.5 for honors and 1.0 for AP or IB, so an A in an AP class counts as 5.0.
›How many credits is a high school class?
Usually 1 credit for a year-long course and 0.5 for a semester course. Some schools count every class as 1; if yours does, leave the default. College courses are typically 3 or 4 credits.
›How do I calculate my cumulative GPA?
Multiply your previous GPA by the credits it covers, add this term's quality points, and divide by all credits. A 3.2 over 60 credits plus a 3.8 over 15 credits is (192 + 57) ÷ 75 = 3.32.
›Is an A+ worth more than an A?
On the standard 4.0 scale used here both are 4.0. Some schools award 4.3 for an A+; check your transcript and adjust if yours does.
›Do pass/fail classes count toward GPA?
Usually not. Pass, withdrawn and incomplete grades carry no grade points and are excluded from the GPA calculation, though a Pass may still earn credits toward graduation.