GPA Calculator
Your grade point average from letter grades and credit hours.
Input sheet
DIY at your own risk. Calcora's calculators and guides are general estimates and information only — not professional, engineering, legal, or safety advice. Always verify local building codes and permit requirements, and hire a licensed pro for electrical, gas, plumbing, structural, or any work you're not fully comfortable doing yourself.
Your GPA is a credit-weighted average, so a four-credit course pulls harder on it than a one-credit elective. This calculator converts your letter grades and credit hours into a precise grade point average on the standard 4.0 scale.
How it works
Each grade's point value times its credit hours, summed and divided by total credits (A=4.0 scale).
Each letter grade is mapped to its point value (A = 4.0, A− = 3.7, B+ = 3.3, and so on down to F = 0). Every grade's points are multiplied by that course's credit hours to get quality points.
The GPA is total quality points divided by total credit hours. Because heavier courses contribute more quality points, a strong grade in a four-credit class lifts your average more than the same grade in a one-credit class.
GPA = Σ (grade points × credit hours) ÷ Σ (credit hours), using the 4.0 scale (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0).
Worked examples
Grades A, B, A, C, B with credit hours 3, 4, 3, 3, 3. → GPA 3.31 across 16 credits (53.0 quality points).
(4×3)+(3×4)+(4×3)+(2×3)+(3×3) = 12+12+12+6+9 = 53; 53 ÷ 16 = 3.31.
Two courses: A in a 1-credit lab and C in a 4-credit core class. → GPA 2.40 across 5 credits.
(4×1)+(2×4) = 4+8 = 12; 12 ÷ 5 = 2.40 — the heavier course dominates.
Tips & gotchas
- Enter grades and credits in the same order so each course's grade lines up with its credit hours.
- Plus/minus grades matter: an A− (3.7) instead of an A (4.0) can move a borderline GPA by a tenth or more.
- To project a target GPA, add a hypothetical future course with its expected grade and credits and watch the result.
- Schools differ on whether they count plus/minus or weight honors classes — confirm your registrar's scale if the number must be official.
FAQ
What happens to pass/fail or withdrawn courses?
Most schools exclude pass/fail and withdrawals from the GPA entirely. Leave those courses out of your grade and credit lists so they do not skew the average.
How do I figure a weighted (5.0) high-school GPA?
Add the bonus points (typically +1 for AP, +0.5 for honors) to each qualifying grade's value before averaging. This tool uses the standard unweighted 4.0 scale.
Does a retaken course replace the old grade?
Policies vary — some schools replace the grade, others average both attempts. Enter only the grades your institution actually counts toward the GPA.
Related calculators
Unit Price Calculator · Dog Age Calculator · Age Calculator · Date Difference Calculator · Fuel Cost Calculator