GPA Calculator
Calculate your Grade Point Average — semester, cumulative, and weighted
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What Is GPA?
GPA (Grade Point Average) is a standardized number that represents your overall academic achievement, typically measured on a 0.0–4.0 scale in the United States. Each letter grade maps to a specific grade point value — A=4.0, B=3.0, C=2.0, D=1.0, F=0.0 — and the credit hours for each course are factored in, giving more weight to classes you spent more time in.
There are two main GPA types you'll encounter: semester GPA (just the current term) and cumulative GPA (all terms averaged together). Many high schools also calculate a weighted GPA, where honors, AP, or IB courses count higher than standard classes — for example, an A in an AP course might count as 5.0 instead of 4.0. This calculator handles both standard and weighted systems.
How to Use the GPA Calculator
- Enter each course name (optional — just for your reference)
- Select the letter grade you received or expect to receive for each course
- Enter the number of credit hours the course is worth
- Click Calculate to instantly see your semester GPA and updated cumulative GPA
GPA Formula & Letter Grade Scale
GPA = Σ(grade points × credit hours) / Σ(credit hours)
Letter grade scale (US standard):
A+ = 4.0, A = 4.0, A- = 3.7
B+ = 3.3, B = 3.0, B- = 2.7
C+ = 2.3, C = 2.0, C- = 1.7
D+ = 1.3, D = 1.0, D- = 0.7
F = 0.0
Example (3 courses):
Math A (4 credits) = 4.0 × 4 = 16.0
English B+ (3 credits) = 3.3 × 3 = 9.9
Art C (2 credits) = 2.0 × 2 = 4.0
GPA = (16.0 + 9.9 + 4.0) / (4 + 3 + 2) = 29.9 / 9 = 3.32Scales vary by institution — some schools use a 4.3 or 4.5 scale for A+, and others use a 5.0 scale for weighted AP/honors courses. Always confirm the exact scale with your school's official grading policy before making enrollment or academic decisions.
Real-World GPA Examples
Strong Semester: Four A's and One B
If you take 5 courses worth 3 credits each and earn four A's (4.0) and one B (3.0), your grade points total 57 divided by 15 credit hours, giving you a semester GPA of 3.80. That's a strong result that will noticeably lift a cumulative GPA under 3.5.
Raising a 2.5 GPA to 3.0 Over Two Semesters
Say you finished your first year with a 2.5 cumulative GPA across 30 credit hours. To reach a 3.0 after two more semesters (30 more credits), you'd need to average a 3.5 GPA each semester going forward. This calculator makes it easy to run those what-if scenarios before you register.
Weighted GPA for an Honors Student
In a weighted system, an A in an AP class counts as 5.0, an A in an honors class as 4.5, and a standard A as 4.0. A student taking three AP courses and two standard courses, all with A grades, would earn a weighted GPA around 4.60 — well above the unweighted 4.0 cap.