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What does this calculator estimate?
Calculate your GPA on a standard 4.0 scale from each course's letter grade and credit hours — a useful way to plan your fall semester as the school year starts. Add a course name, grade, and credits for each class, use + Add more courses for as many classes as you need, choose your term type (semester, quarter, or trimester), and optionally include a prior cumulative GPA.
- Standard scale: A=4.0, A-=3.7, B+=3.3, B=3.0, C=2.0, D=1.0, F=0.
- GPA = total grade points ÷ total credits attempted.
- P/NP/I/W are ignored; an F counts toward credits attempted.
- Add unlimited courses with + Add more courses.
- Optional prior GPA + credits compute an overall GPA.
Unweighted vs weighted
This calculator uses the standard unweighted 4.0 scale. Honors, AP, and IB courses are often weighted (adding up to 1.0 point) at many high schools, which raises the GPA they report but is not the unweighted figure shown here.
Why credits matter
A 4-credit science course moves your GPA more than a 1-credit elective. Because GPA divides grade points by total credits, higher-credit courses carry proportionally more weight in your average.
Planning to raise your GPA
To plan, enter your prior cumulative GPA and prior credits, then add the grades you hope to earn this term. The overall GPA shown tells you whether the target is reachable — and which courses to prioritize, since higher-credit courses move the average more.
How this calculator works
Formula
Each course's grade points are its letter grade on a standard 4.0 scale (A=4.0, A-=3.7, B+=3.3, B=3.0, ... F=0) times its credits. GPA = total grade points ÷ total credits attempted. If you enter a prior cumulative GPA and credits, they fold into an overall GPA over the combined credits.
Worked example
Courses of Math 101 (A, 3 cr), English 102 (B, 4 cr), History 101 (C+, 2 cr), and Biology 110 (A-, 3 cr) produce 39.7 grade points across 12 credits, for a 3.31 GPA. Adding a prior 3.0 over 30 credits gives an overall 3.21 over 42 credits.
Assumptions to verify
- Uses the standard unweighted 4.0 scale with +/- modifiers.
- Credits are treated as attempted (an F counts toward credits attempted).
- P (pass), NP (not pass), I (incomplete), and W (withdrawal) are ignored and do not affect GPA.
- Weighted, plus/minus-inclusive, repeated-course, and pass/fail policies vary by school and can change the result.
- Term type (semester / quarter / trimester) labels your grouping; it does not change the scale unless your school weights differently.
Frequently asked questions
How do I calculate my GPA?
Multiply each course's letter-grade points (A=4.0, B=3.0, C=2.0, D=1.0, F=0 on the standard scale) by its credits, add them up, and divide by total credits attempted. Add course names and credits for each class, then use + Add more courses for additional classes.
What GPA do I need to raise my average?
It depends on how many credits you've already attempted. A strong grade in a high-credit course moves a low GPA more than an A in a 1-credit elective. Enter your prior cumulative GPA and credits, then your current-term grades to see the combined overall GPA.
Is a 3.0 GPA good?
A 3.0 (a B average) is a solid, common baseline for many programs. Whether it's competitive depends on your school and target — some majors, scholarships, and graduate programs look for 3.5 or higher.
Do failed courses affect GPA?
Yes — an F is 0 grade points but counts as credits attempted, which lowers your GPA. Many schools allow repeating a course so the new grade replaces the F; check your institution's policy.
How do I include my past GPA?
Set the Prior cumulative GPA and Prior credits fields (optional). The calculator folds your prior grade points and credits in with the current courses to show an overall GPA across all credits.
How do I plan my GPA for the fall semester?
Use the term type selector set to Semester, add the courses you're taking, and enter your prior cumulative GPA and credits. The calculator shows both your current-term GPA and your overall GPA if the prior term is included, so you can see what fall grades will do to your cumulative average.
Cite this tool
BoringToolsKit. “GPA Calculator.” boringtoolskit.com/gpa-calculator/ (reviewed August 2026). Free to reference in articles, syllabi, and answer posts with a link.
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