Gpa Calculator

The GPA Calculator computes a semester GPA from letter grades and course credits. You can also include a previous GPA and previous credit total to estimate a cumulative GPA on the calculator's 4.0 scale.

Grade points and formula

The built-in scale assigns points from A+ = 4.0 through F = 0.0, including plus and minus grades. Each course is weighted by its credits.

$\text{Quality points}=\sum(\text{Grade points}\times\text{Course credits})$ $\text{Semester GPA}=\frac{\text{Quality points}}{\sum\text{Course credits}}$ $\text{Cumulative GPA}=\frac{(\text{Previous GPA}\times\text{Previous credits})+\text{Current quality points}}{\text{Previous credits}+\text{Current credits}}$

Worked example

For three courses with grades A (3 credits), B+ (3 credits), and C (4 credits):

1. Quality points: (4.0 x 3) + (3.3 x 3) + (2.0 x 4) = 29.9.
2. Total credits: 3 + 3 + 4 = 10.
3. Semester GPA: 29.9 / 10 = 2.99.

The result is credit-weighted, so a four-credit course changes the GPA more than a one-credit course.

Questions

Does a plus or minus grade change the GPA?

Yes. The calculator uses distinct points for grades such as A-, B+, and C- rather than treating every letter band as identical.

Can I calculate cumulative GPA?

Yes. Supply a previous GPA and previous credit total along with the current courses. Without prior credits, the result is the current semester GPA.

Does every school use this exact scale?

No. Institutions may use different point values, weighting rules, repeated-course policies, or weighted GPAs for honors and advanced courses. Compare this result with your school's registrar rules.

Limitations

The calculator accepts positive course credits and the listed 4.0 grade scale. It does not apply institutional exclusions, pass/fail rules, grade replacement, weighted high-school scales, or rounding policies beyond the displayed result.