GPA Calculator
Enter your letter grades and credit hours to get your GPA on the standard 4.0 scale - unweighted and, if you like, weighted for Honors and AP classes.
How your GPA is worked out
Grade point average turns a report card of letters into one number. Each letter grade maps to a point value on the 4.0 scale, and every class is weighted by how many credit hours it carries - a 4-credit class counts nearly twice as much as a 1-credit one. The formula is simply:
GPA = sum(grade points x credits) / sum(credits)
Worked example: an A in a 3-credit class and a B in a 4-credit class. The A is worth 4.0, the B worth 3.0, so the quality points are 4.0 x 3 = 12 and 3.0 x 4 = 12. Add them (24) and divide by the 7 total credits: 24 / 7 = 3.43. The calculator above shows this working live as you fill in each row.
Weighted vs unweighted
An unweighted GPA treats every class the same and tops out at 4.0. A weighted GPA rewards tougher courses: tick the box and this tool adds 0.5 to each Honors class and 1.0 to each AP or IB class before the maths. So an A in an AP class is worth 5.0, and a weighted GPA can climb above 4.0. Colleges see both, but many recalculate to their own scale, so treat weighted numbers as a guide rather than a promise.
The 4.0 grade scale
| Letter | Points | Letter | Points |
|---|---|---|---|
| A+ / A | 4.0 | C | 2.0 |
| A- | 3.7 | C- | 1.7 |
| B+ | 3.3 | D+ | 1.3 |
| B | 3.0 | D | 1.0 |
| B- | 2.7 | F | 0.0 |
| C+ | 2.3 |
Combining semesters into a cumulative GPA
To roll several terms into one cumulative GPA, do not average the GPAs directly unless each term carried the same credits. Instead keep a running total of quality points (points x credits) and a running total of credits, then divide one by the other. This is the same method the calculator uses across all your rows, so you can paste a whole year in at once. If you are checking the arithmetic another way, our percentage calculator and fraction calculator handle the ratios and simplification.