Your grade point average (GPA) is a single number that summarises your academic performance. It is a credit-weighted average of your grades, which means classes worth more credit hours count more toward the final figure. To calculate it by hand you convert every letter grade to points on a 4.0 scale, multiply each grade by the number of credits for that class, add all of those values together, and divide by your total number of credits.

For example, imagine three classes: an A (4.0) worth 3 credits, a B+ (3.3) worth 4 credits, and a B (3.0) worth 3 credits. The grade points are 12.0, 13.2 and 9.0, which add up to 34.2. Your total credits are 10, so your GPA is 34.2 ÷ 10 = 3.42. The quick calculator above does exactly this arithmetic for you, and updates the moment you change a grade.

Unweighted vs. weighted GPA

Most schools report an unweighted GPA on a plain 4.0 scale, where an A is 4.0 no matter how difficult the class is. A weighted GPA rewards harder coursework by adding bonus points — commonly +0.5 for Honors classes and +1.0 for Advanced Placement (AP) or International Baccalaureate (IB) classes. On a weighted scale an A in an AP class can be worth 5.0, which is why weighted GPAs can rise above 4.0. If you take challenging classes, our weighted GPA calculator shows both numbers side by side.

Which calculator should I use?

Use the high school GPA calculator for semester-by-semester high school grades, the weighted GPA calculator when your school gives extra credit for Honors and AP classes, and the cumulative GPA calculator to combine several terms into one overall GPA. If you need to translate your grade for an application or a scholarship, the GPA to percentage converter and the 4.0 GPA scale chart handle the conversions. Every tool is free, needs no account, and keeps your grades on your own device.

Frequently Asked Questions

How is GPA calculated?

Your GPA is the average of your grade points weighted by credit hours. Each letter grade maps to points on a 4.0 scale (A = 4.0, B = 3.0, and so on). Multiply each course's points by its credits, add those up, then divide by your total credits.

Is this GPA calculator free?

Yes. Every calculator on GradeCalcKit is completely free with no account, no email and no limits.

Do you store my grades?

No. All calculations run entirely in your browser. Your grades never leave your device and are never sent to a server.

What is the difference between weighted and unweighted GPA?

Unweighted GPA uses a plain 4.0 scale for every class. Weighted GPA adds bonus points for harder classes — typically +0.5 for Honors and +1.0 for AP or IB — so an A in an AP class can count as 5.0.