GPA Calculator

Pick a letter grade and enter the credit hours for each course, and this calculator returns your GPA on the standard 4.0 scale, weighted by credits. Leave unused rows blank.

Pick a grade and enter credit hours for each course. Leave unused rows blank.

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How the GPA calculator works

GPA (grade point average) converts each letter grade into a number of grade points, then averages them — weighted by credit hours, so a 4-credit course counts more than a 1-credit lab. That credit weighting is the part people forget when they eyeball their GPA: an A in a 1-credit seminar barely nudges the number, while a C in a 4-credit core course leaves a mark.

Select a grade and enter the credits for each course you want included. Rows you leave blank are ignored, so you can compute a single semester or everything you've taken so far.

The formula

GPA = Σ ( grade points × credits ) ÷ Σ credits

Grade points come from the 4.0 scale below, credits are each course's credit hours, and Σ means "sum across all courses." The product of a course's grade points and credits is often called its quality points.

Worked example

A four-course semester: A in a 3-credit course, B+ in a 4-credit course, B in a 3-credit course, and A− in a 2-credit course:

Quality points = 4.0×3 + 3.3×4 + 3.0×3 + 3.7×2 = 12 + 13.2 + 9 + 7.4 = 41.6

GPA = 41.6 ÷ (3 + 4 + 3 + 2) = 41.6 ÷ 12 = 3.47

Notice the B+ in the 4-credit course did more damage than the B in the 3-credit one helped — credits are the lever.

The 4.0 scale (and the A+ question)

GradePointsGradePoints
A4.0C+2.3
A−3.7C2.0
B+3.3C−1.7
B3.0D+1.3
B−2.7D1.0
  F0.0

This is the most common U.S. college scale, but A+ handling genuinely varies: many schools treat an A+ as a plain 4.0 (the convention here — just select A), while others award 4.3, making GPAs above 4.0 possible. A few schools also skip plus/minus entirely, so an A− and an A both earn 4.0. When precision matters — scholarship cutoffs, graduate school applications — pull the official scale from your registrar rather than assuming.

Frequently asked questions

How do I calculate my GPA?

Convert each letter grade to grade points (A = 4.0, B = 3.0, and so on), multiply each by the course's credit hours, add those products up, then divide by your total credit hours. A 3-credit A and a 4-credit B gives (4.0×3 + 3.0×4) ÷ 7 = 3.43.

What GPA is an A- average?

An A- is worth 3.7 grade points, so a straight A- average is a 3.7 GPA. Mixing in some A's pushes you toward 4.0, while B+'s (3.3) pull you down toward the mid-3s.

How does an A+ count toward GPA?

It depends on the school. Many colleges cap everything at 4.0, so an A+ counts the same as an A — that's the convention this calculator uses. Some schools award 4.3 for an A+, which makes GPAs above 4.0 possible. Check your registrar's policy.

Do pass/fail classes affect my GPA?

Usually not. At most colleges, a Pass grants credit toward graduation but carries no grade points, so it's excluded from the GPA calculation entirely. A Fail, however, often does count as an F (0.0). Leave pass/fail courses out of this calculator.

Why is it so hard to raise my GPA after a few semesters?

Dilution. Your GPA is an average over all your credits, so each new course moves it less as your credit total grows. With 90 credits at a 3.0, even a perfect 4.0 semester of 15 credits only lifts you to about 3.14 — which is why protecting your GPA early is far easier than repairing it late.

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