GPA Calculator
Calculate your Grade Point Average based on course grades and credit hours
How It Works
Overview
Your Grade Point Average (GPA) is the standard way schools summarize academic performance into a single number. It's a credit-weighted average of your course grades on a 4.0 scale (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0). Because it's weighted by credits, a 4-credit class affects your GPA more than a 1-credit class.
GPA shows up everywhere: scholarship applications, honor roll, college admissions, grad-school admissions, and even some employers' first-job hiring screens. This calculator handles weighted-by-credit math, supports any number of courses, and tells you the equivalent letter grade.
The Formula
Each grade is converted to a numeric value on the 4.0 scale:
- A or 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
"Quality points" for each course = grade points × credit hours. Sum quality points and credit hours separately, then divide.
Worked Example
One semester with four classes:
- Calculus I — A (4.0) — 4 credits → 16 quality points
- English Lit — B+ (3.3) — 3 credits → 9.9 quality points
- Chemistry — A− (3.7) — 4 credits → 14.8 quality points
- History — B (3.0) — 3 credits → 9 quality points
- Total: 49.7 quality points / 14 credits
- GPA = 49.7 ÷ 14 = 3.55
When to Use This
- End-of-semester — checking your GPA before grades are officially posted.
- Mid-term planning — figuring out which classes need the most focus to hit your target.
- Course selection — projecting how a possible C in a hard elective would affect cumulative GPA.
- Transfer applications — calculating GPA on the receiving school's grading system.
- Scholarship eligibility — many require a minimum GPA each semester.
Common Mistakes to Avoid
- Averaging semester GPAs. Always re-aggregate from quality points and credits — averaging GPAs ignores credit weighting.
- Ignoring +/− grades. An A− is 3.7, not 4.0. Including these correctly can shift your GPA by ~0.1.
- Mixing weighted and unweighted. Don't compare a 4.5 weighted high-school GPA to a 4.0 college unweighted GPA.
- Forgetting failed courses. An F counts as 0 in the average — and the credits are still in the denominator (unless retaken under a replacement policy).
- Not asking about repeat policies. Many schools let you replace a failed course's GPA impact by retaking it. Check your registrar.
Frequently Asked Questions
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