GPA Calculator
Calculate your cumulative GPA on the standard 4.0 scale by adding each course with its letter grade and credit hours.
Cumulative GPA
3.42
Across 10 credits
Formula
GPA = Σ(grade points × credits) ÷ Σ(credits)
Worked example
A (3 credits), B+ (4 credits), B (3 credits).
- Quality points: 4.0×3 + 3.3×4 + 3.0×3 = 12.0 + 13.2 + 9.0 = 34.2
- Credits: 3 + 4 + 3 = 10
- GPA = 34.2 ÷ 10 = 3.42
Answer: 3.42 GPA
How it works
Each letter grade maps to a number of grade points (A = 4.0, B+ = 3.3, and so on). Multiplying grade points by the credit hours of each course gives quality points.
GPA is the credit-weighted average of those quality points, so a 4-credit class affects your GPA more than a 1-credit class with the same grade.
We use the standard plus/minus 4.0 scale common across most US colleges. If your school uses a different scale, pick the closest letter to convert your grade.
Common mistakes
- Counting a course you withdrew from or audited — usually those carry zero credits and don't affect GPA.
- Mixing semester and cumulative GPAs by re-entering the cumulative number as a course.
- Entering credit hours as letters or leaving the field blank — empty rows are skipped.
FAQ
- Does this support weighted (5.0) GPAs?
- Not yet — this uses the standard 4.0 scale common in most US colleges.
- What if my school uses a different grade scale?
- Pick the closest letter grade to your school's scale, or convert your percentage to the nearest letter.
- How do I add a class with no letter grade (Pass/Fail)?
- Pass/Fail courses usually don't affect GPA. Skip them, or list them with zero credits.
- Do failing grades count?
- Yes — an F counts as 0 grade points and still contributes its credit hours to the divisor, which lowers your GPA.
- Can I model retaking a class?
- Add the retake as a separate row. Many schools replace the original grade in the GPA calculation; check your registrar's policy.