Interactive GPA Calculator
Enter your courses, credit hours, and letter grades. You can also include your current cumulative GPA and completed credits to estimate your updated cumulative GPA.
| Course Name | Credits | Letter Grade | Action |
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What is GPA?
GPA stands for Grade Point Average. It is a standardized way to summarize your academic performance across all classes by converting letter grades into numerical values and weighting them by course credits. Schools use GPA for academic standing, scholarships, honors, graduation requirements, and admissions decisions.
The two most common GPA types are:
- Semester GPA: Based only on classes from one term.
- Cumulative GPA: Includes all classes completed so far.
The Basic GPA Formula
GPA is a weighted average. That means courses with more credits count more than courses with fewer credits. The formula is:
GPA = Total Quality Points ÷ Total Attempted Credits
How quality points work
- Each letter grade has a point value (for example, A = 4.0, B = 3.0, C = 2.0).
- Multiply grade points by course credits to get quality points for that class.
- Add quality points from all classes.
- Divide by total credits attempted.
Common 4.0 Grade Point Scale
While institutions can vary slightly, many schools use a scale close to this:
- A / 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
- F = 0.0
Always verify your school’s official grading policy. Some schools use different plus/minus values or omit them entirely.
Step-by-Step Example: Semester GPA
Suppose your term includes these classes:
- Biology (4 credits): B+ (3.3)
- English (3 credits): A- (3.7)
- Math (3 credits): B (3.0)
- History (2 credits): A (4.0)
Step 1: Multiply each grade by credits
- Biology: 4 × 3.3 = 13.2
- English: 3 × 3.7 = 11.1
- Math: 3 × 3.0 = 9.0
- History: 2 × 4.0 = 8.0
Step 2: Add quality points and credits
- Total quality points = 13.2 + 11.1 + 9.0 + 8.0 = 41.3
- Total credits = 4 + 3 + 3 + 2 = 12
Step 3: Divide
Semester GPA = 41.3 ÷ 12 = 3.44
How to Calculate Cumulative GPA
Cumulative GPA combines your previous record with your current term. Use a weighted average:
New Cumulative GPA = (Old GPA × Old Credits + New Quality Points) ÷ (Old Credits + New Credits)
Example: If you currently have a 3.20 over 60 credits and you earn 45 quality points over 15 new credits:
- Old quality points = 3.20 × 60 = 192
- Combined quality points = 192 + 45 = 237
- Combined credits = 60 + 15 = 75
- New cumulative GPA = 237 ÷ 75 = 3.16
Weighted vs. Unweighted GPA
Unweighted GPA
Uses one standard scale (usually 4.0) for all classes, regardless of difficulty.
Weighted GPA
Gives extra value to advanced courses (Honors, AP, IB, dual enrollment). For example:
- A in regular class = 4.0
- A in honors class = 4.5
- A in AP/IB class = 5.0
Because weighting systems differ, your school’s handbook is the final authority.
Classes That May Not Count the Same
Not every class affects GPA in the same way. Depending on your institution:
- Pass/Fail courses may be excluded from GPA.
- Withdrawals may appear on transcript but not affect GPA.
- Retaken classes may replace old grades, average both grades, or follow special rules.
- Transfer courses may count for credit but not local GPA.
Check your registrar or academic catalog for exact policies.
How to Raise Your GPA Strategically
- Prioritize high-credit classes: Improvement there has greater impact.
- Use office hours: Clarify concepts early, not after exams.
- Create a weekly study plan: Consistency beats last-minute cramming.
- Track every grade category: Quizzes, labs, participation, and finals can shift outcomes.
- Ask about grade improvement policies: Retakes or replacement options may help.
Quick GPA Calculation Checklist
- Use the correct grade-to-point scale for your school.
- Include correct credit hours for every class.
- Multiply grade points by credits for each course.
- Add all quality points.
- Divide by total GPA-applicable credits.
- Round only at the end (if your school rounds).
Final Thoughts
Knowing how to calculate GPA gives you control over your academic goals. Once you understand the math, you can forecast outcomes, set realistic targets, and make better decisions before registration and finals. Use the calculator above to estimate both semester and cumulative GPA in seconds.