College GPA Calculator
College GPA weights each course by credit hours, not by how hard it felt. Enter the credits and the grade for each course.
Credit hours are the whole calculation
In college, each course carries credit hours — usually 3 or 4 for a lecture course, 1 for a lab, 0.5 to 1 for a seminar. Your GPA is the credit-weighted average of your grade points, so the 4-credit organic chemistry course decides more of your semester than the 1-credit orientation seminar.
GPA = Σ(grade point × credit hours) ÷ Σ(credit hours)
If you are adding this term to an existing record rather than replacing it, use the cumulative GPA calculator — averaging two semester GPAs directly gives the wrong answer whenever the credit loads differ.
Grade points
| Letter | Points | Letter | Points |
|---|---|---|---|
| A | 4.0 | C+ | 2.3 |
| A− | 3.7 | C | 2.0 |
| B+ | 3.3 | C− | 1.7 |
| B | 3.0 | D | 1.0 |
| B− | 2.7 | F | 0.0 |
Many colleges do not award points for an A+ or cap it at 4.0. Some use a 4.3 scale. The calculator uses the 4.0 table above because it is the most common in the US and the one most graduate programs assume when they ask for your GPA.
Worked example
| Course | Grade | Points | Credits | Quality points |
|---|---|---|---|---|
| Organic Chemistry | B | 3.0 | 4 | 12.0 |
| Calculus II | C+ | 2.3 | 4 | 9.2 |
| Psychology | A | 4.0 | 3 | 12.0 |
| Academic Writing | B+ | 3.3 | 3 | 9.9 |
| Chemistry Lab | A− | 3.7 | 1 | 3.7 |
| Total | — | 15 | 46.8 |
46.8 ÷ 15 = 3.12. Note that the unweighted average of those five grades is 3.20 — the two missing points come from the lab, a single credit that barely moves the total.
What usually does not enter the calculation
- Withdrawn courses (W). They stay on the transcript but normally carry no grade points. They do count against attempted credits, which can matter for full-time status, financial aid and satisfactory academic progress rules.
- Pass/fail courses. A pass adds credits earned but no quality points, so it neither raises nor lowers the average. Some schools do assign a grade point — check the catalog.
- Transfer credits. Usually recorded as credit with no letter grade, so they count toward graduation but not toward your GPA at the new school.
- Repeated courses. Policies differ sharply: many schools replace the old grade, some average both attempts, and a few allow replacement only once. This single rule can move a GPA by several tenths, so it is worth reading.
Common questions
How many credits of A does it take to raise my GPA?
Solve it with quality points. At 60 credits and a 2.80 GPA you hold 168 quality points. Adding x credits of straight A gives (168 + 4x) ÷ (60 + x) = 3.00, so x = 12 — twelve credits of perfect grades to move from 2.80 to 3.00. A single A in a 3-credit course moves it to 2.86.
Is a 3.0 GPA enough for graduate school?
3.0 is the floor at most US graduate programs, not a competitive number. Competitive applicants in most fields sit above 3.4, and professional programs in business, law and medicine report their own middle 50% ranges. A 3.0 with strong research or work experience is often read differently from a 3.0 with none.
Does a failed course stay in the GPA forever?
The F stays in your quality point total unless your school has a grade replacement or academic forgiveness policy, and those policies usually have a deadline and a credit limit. Retaking the course rarely erases the original attempt on the transcript, even when the GPA calculation substitutes the new grade.