College & High School GPA Calculator
Calculate credit-weighted semester GPA, determine updated cumulative GPA, explore honors and AP weighted scales, and project target GPA requirements.
GPA calculator highlights
Why Credit Hours Matter in GPA Calculations
A common misconception is that Grade Point Average is simply the mean of your course letter grades. In collegiate and high school academic catalogs worldwide, GPA is fundamentally credit-weighted: courses with higher credit allocations (like 4-credit lecture-and-lab sequences) have significantly more mathematical weight on your transcript than 1- or 2-credit electives.
Formulexa calculates true quality points for every course, adds them cumulatively, and divides solely by the GPA-bearing credits attempted. Non-credit or pass/fail grades are cleanly excluded from the denominator.
How to Use the GPA Calculator
- 1Select your grading scale reference (Common 4.0, 4.33 A+, or Custom Scale).
- 2Enter your coursework: choose a letter grade or non-GPA status and enter the credit hours.
- 3Enable weighted GPA if taking Honors (+0.5) or AP/IB (+1.0) courses.
- 4Optionally enable cumulative GPA or the Target GPA planning tool to forecast upcoming semesters.
- 5Select Calculate GPA. After calculation, updating any row or setting recalculates results in real time.
The Credit-Weighted GPA Formula
Each course generates Quality Points equal to its grade points multiplied by its credit hours:
Quality Points = Grade Points × Credit Hours
Semester GPA is the sum of quality points divided by total GPA-bearing credits:
GPA = Σ(Grade Points × Credits) ÷ Σ(GPA Credits)
Academic Policy Note
Grading policies, repeat exclusions, pass/fail thresholds, and GPA truncation versus rounding differ between schools. Formulexa provides an educational planning model; check your official registrar catalog for transcript audits.
Worked Example
Four 3-credit courses earning A (12 pts), B (9 pts), B+ (9.99 pts), and A− (11.01 pts) yield 42.00 quality points across 12 credits, resulting in an unweighted semester GPA of exactly 3.50.
Excluded Grade Handling
Reference notations (P, S, W, I, NP, N, U) are excluded from quality points and credit hour totals in this tool. Check your institution's catalog, as some universities treat NP or U as punitive failing grades.
Why This GPA Calculator Is Reliable
Transparent registrar-aligned formulas, verifiable quality point breakdowns, and complete privacy protection.
Documented Formulas
Credit-weighted arithmetic verified against registrar standards.
Transparent Exclusions
Pass, Fail, Withdrawn, and Incomplete grades handled explicitly.
No Hidden Normalization
Custom scale options give you complete institutional control.
Device-Only Math
Academic inputs never leave your web browser.
Quick answers
Frequently Asked Questions
Practical answers for collegiate and secondary grade point planning.
Primary Sources & Registrar Policies
Formulexa grading models are referenced against published registrar regulations and institutional catalog policies.
- Rice University Office of the Registrar
Grade definitions & policy capping A+ at 4.00 quality points.
- Columbia University College Bulletin
Academic regulations establishing A+ at 4.33 grade points.
- University of Iowa Office of the Registrar
Grading system documentation specifying 4.33 quality points for A+.
- Cornell University Courses of Study
Official grading scale documenting A+ at 4.30 grade points.
- Portland State University Office of the Registrar
Official GPA calculation regulations documenting truncation to two decimal places without rounding.
- The Ohio State University Graduate Admissions
Official GPA calculation resources & international credential guidelines advising against self-conversion.