GPA Calculator
Calculate your Grade Point Average (GPA) on a 4.0 scale. Add your courses, select grades, and enter credit hours. Supports cumulative GPA with previous semesters. See also Percentage Calculator.
Previous Semester (optional — for cumulative GPA)
How to Calculate GPA
GPA (Grade Point Average) is calculated by dividing the total number of grade points earned by the total number of credit hours attempted. Each letter grade corresponds to a numeric value on a 4.0 scale. Multiply each course's grade value by its credit hours to get grade points, sum all grade points, then divide by total credit hours.
GPA Formula
GPA = Sum of (Grade Points × Credit Hours) / Total Credit Hours
Example
Course A: A (4.0) × 3 credits = 12.0 points
Course B: B+ (3.3) × 4 credits = 13.2 points
Course C: A- (3.7) × 3 credits = 11.1 points
Total: 36.3 points / 10 credits
GPA = 3.63
Grade to GPA Conversion Table
| Letter Grade | Grade Points | Percentage |
|---|---|---|
| A+ | 4.0 | 97-100% |
| A | 4.0 | 93-96% |
| A- | 3.7 | 90-92% |
| B+ | 3.3 | 87-89% |
| B | 3.0 | 83-86% |
| B- | 2.7 | 80-82% |
| C+ | 2.3 | 77-79% |
| C | 2.0 | 73-76% |
| C- | 1.7 | 70-72% |
| D+ | 1.3 | 67-69% |
| D | 1.0 | 63-66% |
| D- | 0.7 | 60-62% |
| F | 0.0 | Below 60% |
Technical Details
This calculator uses the standard US 4.0 GPA scale used by most American colleges and universities. Some institutions use variations like a 4.3 scale (where A+ = 4.3) or weighted GPA scales for honors/AP courses. The cumulative GPA feature allows you to combine your current semester with previous semesters for an overall GPA. Latin honors thresholds vary by institution — the labels shown (Summa Cum Laude, Magna Cum Laude, Cum Laude) use common cutoffs but your school may differ.
Frequently Asked Questions
What is a good GPA?
A GPA of 3.0 or above is generally considered good. A 3.5+ is very good, and 3.7+ is excellent. For graduate school admissions, most programs expect a minimum of 3.0, with competitive programs looking for 3.5+.
How do I calculate cumulative GPA?
Multiply your previous GPA by previous total credits to get previous grade points. Add current semester grade points. Divide the combined total by combined credits. This calculator handles this automatically when you enter previous GPA and credits.
Does GPA include all courses?
Typically yes — GPA includes all graded courses. Some schools exclude pass/fail courses, transferred credits, or repeated courses (using only the higher grade). Check your institution's specific policy.
What is the difference between weighted and unweighted GPA?
Unweighted GPA uses the standard 4.0 scale for all courses. Weighted GPA gives extra points for honors, AP, or IB courses (e.g., an A in AP class = 5.0 instead of 4.0). This calculator uses the unweighted 4.0 scale.
Solved Examples
Example 1: Calculate Semester GPA (5 Courses)
Solution:
English (A, 3 credits): 4.0 × 3 = 12.0 points
Math (B+, 4 credits): 3.3 × 4 = 13.2 points
History (A-, 3 credits): 3.7 × 3 = 11.1 points
Science (B, 3 credits): 3.0 × 3 = 9.0 points
Art (A, 2 credits): 4.0 × 2 = 8.0 points
Total: 53.3 points ÷ 15 credits = 3.55
Answer: Semester GPA = 3.55 (Cum Laude level)
Example 2: Calculate Cumulative GPA (Previous + Current Semester)
Solution:
Previous: GPA 3.2, 30 credits → 3.2 × 30 = 96.0 grade points
Current semester: GPA 3.55, 15 credits → 3.55 × 15 = 53.25 grade points
Combined: (96.0 + 53.25) ÷ (30 + 15) = 149.25 ÷ 45 = 3.317
Answer: Cumulative GPA = 3.32
Example 3: Impact of a Failed Course on GPA
Solution:
3 courses with A (4.0 × 3 credits each): 3 × 12.0 = 36.0 points
1 course with F (0.0 × 4 credits): 0.0 points
Total credits: (3 × 3) + 4 = 13 credits
GPA = 36.0 ÷ 13 = 2.77
Without the F: 36.0 ÷ 9 = 4.0 — one F dropped the GPA by 1.23 points!
Answer: GPA = 2.77 (a single F in a 4-credit course dramatically impacts GPA)
Example 4: What Grade Do I Need to Raise My GPA?
Solution:
Current: GPA 2.8, 45 credits (total points = 2.8 × 45 = 126)
Goal: GPA 3.0 after 15 more credits (total = 60 credits)
Required points: 3.0 × 60 = 180 total points needed
Points needed this semester: 180 − 126 = 54 points in 15 credits
Required semester GPA: 54 ÷ 15 = 3.6 (need mostly A- and above)
Answer: Need a 3.6 semester GPA to reach 3.0 cumulative
Practice Questions
Q1: Calculate GPA: Biology A (4 cr), Chemistry B+ (4 cr), English A- (3 cr), PE B (1 cr).
Answer: (4.0×4 + 3.3×4 + 3.7×3 + 3.0×1) ÷ 12 = (16+13.2+11.1+3) ÷ 12 = 43.3 ÷ 12 = 3.61
Q2: A student has a 3.5 GPA over 60 credits. They get a 2.0 in a 3-credit course. New cumulative GPA?
Answer: Previous points: 3.5 × 60 = 210. New: 210 + (2.0×3) = 216. New GPA: 216 ÷ 63 = 3.43
Q3: If all 5 courses (3 credits each) get a B+ (3.3), what is the GPA?
Answer: GPA = (3.3 × 15) ÷ 15 = 3.3. When all grades are the same, GPA equals that grade value regardless of credits.
Q4: Is a 3.7 GPA possible if you have one B (3.0) in a 4-credit course out of 16 total credits?
Answer: Max points from other 12 credits: 4.0 × 12 = 48. With B: 48 + 12 = 60. GPA = 60 ÷ 16 = 3.75. Yes, it's possible if all other courses are A.
Q5: A student retakes a D (1.0) course (3 credits) and gets an A (4.0). Their school replaces the grade. Impact on 30-credit GPA of 2.9?
Answer: Old points: 2.9 × 30 = 87. Remove D: 87 − 3 = 84. Add A: 84 + 12 = 96. New GPA: 96 ÷ 30 = 3.2 (gained 0.3 points).
Common Mistakes to Avoid
The most common GPA calculation mistake is confusing weighted and unweighted GPA — a weighted system gives AP/honors courses extra points (A = 5.0), while the standard 4.0 scale does not. Using the wrong scale leads to inflated expectations. Another frequent error is forgetting that credit hours matter: an F in a 4-credit course damages GPA far more than an F in a 1-credit course. Students also incorrectly exclude failed or withdrawn courses from their calculation — most schools count F grades in GPA (0.0 × credits still uses those credit hours as the denominator). When calculating cumulative GPA, a common mistake is averaging semester GPAs instead of recalculating from total grade points and total credits — this is only accurate if every semester has the same number of credits. Finally, some students assume a 4.0 GPA is still achievable after receiving a B — while technically possible with grade replacement policies, most schools do not allow this retroactively.
Key Takeaways
- GPA = Total Grade Points ÷ Total Credit Hours. Each course contributes (grade value × credits) to the numerator.
- Credit hours act as weights — a 4-credit course impacts GPA four times more than a 1-credit course.
- One F can drop GPA dramatically. A single F in a 4-credit course can lower a 4.0 GPA to 2.77 in a 13-credit semester.
- To calculate cumulative GPA, multiply previous GPA by previous credits, add current points, then divide by total credits.
- The higher your total credits, the harder it becomes to raise (or lower) your GPA — each new grade has diminishing impact.
- Latin honors thresholds vary by school, but typically: Cum Laude (3.5+), Magna Cum Laude (3.7+), Summa Cum Laude (3.9+).