Math

GPA Calculator

Add your courses, grades, and credit hours for an instant, credit-weighted GPA on the standard 4.0 scale.

Course (optional) Grade Credits

GPA (4.0 scale)

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Key features

Standard US 4.0 scale with plus/minus grading (A, A-, B+, etc.)
Credit-hour weighted — a 4-credit course counts more than a 1-credit course
Add or remove as many courses as you need
Instant recalculation as you edit any grade or credit value

Why use this gpa calculator

Useful for tracking your GPA before an official transcript update
See the effect of a specific grade before committing to a course plan
No spreadsheet setup required for a quick semester or cumulative GPA

A worked example

Take four courses: an A (4.0) in a 3-credit class, a B+ (3.3) in a 4-credit class, a B (3.0) in a 3-credit class, and an A- (3.7) in a 2-credit class. Total grade points: (4.0×3) + (3.3×4) + (3.0×3) + (3.7×2) = 12 + 13.2 + 9 + 7.4 = 41.6. Total credits: 3+4+3+2 = 12. GPA = 41.6 ÷ 12 = 3.467 — not simply the average of 4.0, 3.3, 3.0, and 3.7 (which would be 3.5), because the credit weighting shifts the result slightly.

Why credit weighting changes the outcome

Averaging your letter grades directly, without accounting for credit hours, treats a 1-credit seminar the same as a 4-credit core course — which doesn't reflect how GPA actually works at any US institution. A strong grade in a heavier course moves your GPA more than the same grade in a lighter one, which is exactly why the credit-hour field matters as much as the grade itself when entering your courses.

Frequently asked questions

How is GPA calculated?

Each letter grade converts to a point value (A = 4.0, A- = 3.7, B+ = 3.3, and so on down to F = 0.0), multiplied by that course's credit hours. GPA is the sum of all grade points divided by the sum of all credit hours — a weighted average, not a simple average of letter grades.

Why does a 3-credit A count more than a 1-credit A?

Because GPA is credit-weighted, a course worth more credit hours has a bigger effect on your overall GPA than a lighter course with the same grade — reflecting that it represents more coursework.

Does this match my school's official GPA scale?

This uses the standard US 4.0 unweighted scale. Some schools use a weighted scale (extra points for AP/Honors courses) or a slightly different point mapping — check your institution's registrar for the exact scale if you need an official match.

Can I calculate a single semester vs. cumulative GPA?

Yes — enter just that semester's courses for a semester GPA, or every course you've taken for a cumulative GPA. The calculation method is identical either way.