GPA Calculator
Calculate your grade point average on the 4.0 scale from your course grades and credit hours.
Last reviewed July 1, 2026
Your GPA (grade point average) sums up your academic performance in a single number. This calculator works it out on the standard US 4.0 scale — just add each course, pick the grade, and enter the credit hours.
Because it's weighted by credits, a heavier course affects your GPA more than a lighter one. Add or remove courses freely to model different scenarios, like what an A in your next class would do to your average.
The GPA formula
GPA = Σ(grade points × credit hours) ÷ Σ(credit hours)grade points = the value of each letter grade (A = 4.0 down to F = 0.0) · credit hours = the weight of each course. Multiply the two for each course, sum them, and divide by the total credits.
Worked example
Take an A (4.0) in a 3-credit course and a B (3.0) in a 4-credit course: quality points are 4.0×3 + 3.0×4 = 12 + 12 = 24, over 7 credits, giving a GPA of 24 ÷ 7 ≈ 3.43.
How GPA is calculated
Each letter grade maps to grade points (A = 4.0, A- = 3.7, B+ = 3.3, and so on down to F = 0.0). Multiply each course's grade points by its credit hours to get quality points, add those up across all courses, and divide by the total credits.
That credit-weighting is why GPA isn't just the average of your grades — a 4-credit course counts more toward the final number than a 1-credit one.
Grades and scales vary
This calculator uses the common unweighted 4.0 scale. Some schools use weighted scales (where honors or AP classes can exceed 4.0), or count A+ as 4.3. Check your institution's official scale if you need an exact match — the method here is the standard starting point.
Frequently asked questions
▶How do I calculate my GPA?
Multiply each course's grade points by its credit hours, add them all up, and divide by your total credit hours. This calculator does it automatically as you add courses.
▶What is a good GPA?
It varies by context, but on a 4.0 scale, 3.5+ is generally considered strong, 3.0 solid, and many programs look for 3.0 or above. What counts as 'good' depends on your goals and field.
▶What's the difference between weighted and unweighted GPA?
An unweighted GPA caps at 4.0 and treats all courses equally. A weighted GPA gives extra points for harder classes like honors or AP, so it can exceed 4.0. This calculator uses the unweighted scale.
▶How do letter grades convert to grade points?
On the standard scale, A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, and so on down to F = 0.0. Each course's grade points are multiplied by its credit hours.
▶Why is my GPA not just the average of my grades?
Because it's weighted by credit hours. A 4-credit course pulls on your GPA far more than a 1-credit one, so heavier courses count for more in the final average.
▶How do I calculate my cumulative GPA across semesters?
Add the quality points (grade points × credits) from every course across all semesters and divide by your total credits. Adding all your courses above gives the cumulative figure.
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Open calculator →Disclaimer: GPA Calculator results are estimates for general information and education only, and are not financial, tax, legal or medical advice. Verify important decisions with a qualified professional.