GPA Calculator
Calculate your GPA quickly and understand exactly how your grades and credit hours affect your result.
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How your GPA was calculated
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A GPA calculator computes your Grade Point Average by converting letter grades (or numerical grades) into grade points on the standard gpa scale, weighting them by course credit hours, and averaging the result. This tool works for both a single semester GPA and cumulative GPA across multiple semesters, on the 4.0 gpa grading system used by most U.S. high schools and colleges.
Enter your grades and the credit hours for each course to calculate your gpa.
Worked Calculation Examples
| Scenario | Result | Calculation Step |
|---|---|---|
| 3 courses (A=4, B=3, A=4 with 3 credits each) | 3.67 GPA | (12 + 9 + 12) / 9 = 33 / 9 = 3.67 GPA. |
How the 4.0 Scale Works
On the standard unweighted 4.0 scale, an A equals 4.0 grade points, a B equals 3.0, a C equals 2.0, a D equals 1.0, and an F equals 0, with plus/minus grades adding or subtracting roughly 0.3 points (an A- is commonly 3.7, a B+ is commonly 3.3). Multiplying each course's grade points by its credit hours, summing those products, and dividing by total credit hours produces the GPA - a 4-credit A counts more toward your GPA than a 1-credit A, since credit hours act as a weighting factor.
Weighted vs. Unweighted GPA
An unweighted GPA treats every course the same regardless of difficulty, capping at 4.0. A weighted GPA gives extra grade points for more rigorous courses - commonly +0.5 for Honors courses and +1.0 for AP or IB courses - which is why some high school students report weighted GPAs above 4.0. Colleges reviewing applications often recalculate GPA using their own weighting system rather than relying solely on the number reported by the high school, since weighting policies vary significantly between schools.
Semester GPA vs. Cumulative GPA
Semester GPA reflects only the courses taken in a single term, while cumulative GPA averages across every term completed so far, weighted by each term's credit hours. A single bad semester has a smaller effect on cumulative GPA the more total credit hours you've already completed, since it's averaged against a larger existing base.
How to Use the GPA Calculator
- Open the GPA Calculator and enter the values requested in the input fields.
- Check the units, percentages, dates, or time periods before reading the answer.
- Review the instant result and adjust any value to compare another scenario.
- Use the formula, example, and FAQs below to understand how the gpa calculator works.
Frequently Asked Questions
How do you calculate GPA?
Multiply each course's grade points by its credit hours, add those totals together, then divide by the total credit hours attempted - that's how to compute GPA on the standard 4.0 scale.
How is weighted GPA calculated?
Weighted GPA adds extra grade points for Honors (+0.5) or AP/IB (+1.0) courses.
What GPA is a 3.5?
A 3.5 GPA on the standard unweighted 4.0 scale falls between a B+ and A- average, generally considered a strong GPA at most high schools and colleges.
How do I calculate cumulative GPA across multiple semesters?
Multiply each course's grade points by its credit hours across all semesters, sum those totals, and divide by the total credit hours attempted across all semesters - this calculator can combine multiple semesters using the settings for grouping courses.
What is the difference between weighted and unweighted GPA?
Unweighted GPA treats all courses equally on a 4.0 scale. Weighted GPA adds bonus points for more rigorous courses (commonly +0.5 for Honors, +1.0 for AP/IB), which can push a weighted GPA above 4.0.
Do colleges look at weighted or unweighted GPA?
Many colleges recalculate GPA using their own standardized weighting system when reviewing applications, since high schools use inconsistent weighting policies - both numbers are often considered as part of a fuller academic picture.
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Last updated: September 29, 2026.