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.

Why your GPA matters

Your GPA follows you well beyond a single report card. College admissions offices use it as a quick, comparable snapshot of your academic record across every class you have taken, and many scholarships set a minimum GPA as a hard cutoff before they even look at an application. Once you are enrolled, GPA often decides eligibility for academic honors, Latin honors at graduation (cum laude and above), participation in varsity athletics, and continued eligibility for financial aid or merit scholarships that require you to stay above a set threshold each term.

Beyond the numbers that gatekeep opportunities, your GPA is also the fastest way to check in on your own progress. Recalculating it after every graded assignment — rather than waiting for an official transcript — lets you see exactly how a single low test score or a strong project will move your overall average, so you can adjust your effort before it is too late to matter.

What counts as a good GPA?

"Good" depends entirely on context, but a few benchmarks are widely used. On the standard unweighted 4.0 scale, a 3.5 or higher is generally viewed as strong, a 3.0 to 3.4 is solid and competitive at most schools, and anything below 2.0 typically triggers academic probation at the college level. Selective and highly selective colleges often report admitted-student averages at or above 3.7 unweighted, though weighted GPAs at those same schools can run well above 4.0 because of Honors and AP coursework.

Context matters as much as the raw number. A 3.4 in a schedule loaded with AP and IB classes usually reads stronger to an admissions committee than a 4.0 in entirely standard classes, which is exactly why colleges frequently recalculate applicants' GPAs on their own scale rather than taking the transcript figure at face value. Use the benchmarks above as a general guide, and check the specific requirements of any scholarship, program or school you are targeting.

Common GPA calculation mistakes to avoid

A handful of small errors account for most GPA miscalculations. Forgetting to weight by credit hours is the most frequent — a one-credit elective and a four-credit core class do not count equally, so averaging letter grades without their credits skews the result. Mixing weighted and unweighted scales in the same calculation is another common slip: if one class includes an Honors or AP bonus and another does not, the total stops being an apples-to-apples average.

Repeated classes cause confusion too. Some schools replace the original grade entirely when you retake a course, others average the two attempts, and a few keep both on the transcript — check your school's specific retake policy rather than assuming. Finally, students often confuse semester GPA (one term only) with cumulative GPA (every term combined), which are genuinely different numbers used for different purposes. Our cumulative GPA calculator is built specifically to combine terms correctly, so you never have to do that weighting by hand.

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 GPA Calculator Kit 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.