Courses
Calculation details
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What does this calculator estimate?
An A (4.0) in a 3-credit course and a B (3.0) in another 3-credit course gives a 3.50 GPA: (4.0 x 3 + 3.0 x 3) / 6. GPA = sum(grade points x credits) / sum(credits).
- GPA = sum(grade points x credits) / sum(credits) (Wikipedia).
- Standard scale: A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0.
- Weighted GPAs add points for honors and AP courses.
How GPA is computed
Each grade maps to grade points, multiplied by the course's credit hours so heavier courses count more. The sum divided by total credits is your GPA — the standard 4.0-scale metric used for admissions and standing.
Limitations to watch for
Scales vary: some schools use plus/minus (A− = 3.7), others don't; some add weight for honors/AP courses. The tool uses the standard unweighted plus/minus scale. Transfer credits and repeated courses have school-specific rules.
How to use it in practice
Enter each course's letter grade and credit hours. Use the result to check standing, plan improvement (what would an A do?), or estimate admissions impact. Confirm your school's scale matches the default.
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How this calculator works
Formula
GPA = Σ (grade points × course credits) ÷ Σ credits. Standard scale: 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.
Worked example
An A (4.0) in a 3-credit course and a B (3.0) in another 3-credit course: (4.0×3 + 3.0×3) ÷ 6 = 3.50 GPA.
Assumptions to verify
- The standard 4.0 plus/minus scale is used.
- All courses are unweighted.
- Credits are entered as the school defines them.
Frequently asked questions
How is GPA calculated?
Sum of (grade points × credits) divided by total credits. An A (4.0) in 3 credits + a B (3.0) in 3 credits = (12 + 9) ÷ 6 = 3.50.
What are grade points?
The numeric value of each grade: 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.
Why do credits matter?
A 4-credit course counts more than a 2-credit one — GPA is credit-weighted, not a simple average of grades.
What is an unweighted GPA?
Standard 4.0 scale with no bonus for honors/AP classes. Weighted GPAs add points for advanced courses.
Is the plus/minus scale universal?
No — many schools use plain A/B/C without pluses and minuses. Adjust to your school's scale.
What GPA do I need?
It depends on your goals: 3.0 for many programs, 3.5+ for competitive ones, and academic standing requirements vary.
How can I improve my GPA?
Focus on high-credit courses (they move the average more), retake failed courses where allowed, and raise grades in your weakest classes.
Cite this tool
BoringToolsKit. “GPA Calculator.” boringtoolskit.com/gpa-calculator/ (reviewed 2026-08-25). Free to reference in articles, syllabi, and answer posts with a link.
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