GPA Calculator — How to Calculate Weighted GPA

Calculate a credit-weighted GPA on a 4.0 scale from course grade points and credit hours. Example: A = 4.0 (3 credits) and B = 3.0 (3 credits) → GPA 3.5. Grading scales differ by school and region — educational illustration only; runs in your browser.

How it works

List each course as grade points and credit hours. The tool weights every grade by credits and divides by total credits. Calculations stay in your browser. Always check your school’s official scale.

Formula and scale notes

GPA = Σ (grade points × credits) / Σ credits. Keep these notes in mind:

This demo uses a simple 4.0 mapping; plus/minus or honors weights are not auto-applied.
Credits must be positive; grade points must be finite numbers.
College, high school, and regional systems can differ — results are educational only.

Example

Example: course A = 4.0 with 3 credits, course B = 3.0 with 3 credits → GPA = (4.0×3 + 3.0×3) / (3+3) = 21 / 6 = 3.50.

When to use it

Rough semester GPA from grade points and credits before the official portal updates.
Homework: practice credit-weighted averages on a 4.0 scale.
Compare what-if grades for college or high school planning — not an admissions decision.

Frequently asked questions

What GPA formula does this use?

Weighted GPA = Σ (grade points × credits) / Σ credits. Enter grade points already on your scale (e.g. 4.0 for A).

Is every school on a 4.0 scale?

No. Many U.S. schools use 4.0 with plus/minus; others use 5.0 weighted or percentage systems. Always follow your transcript rules.

Can I mix letter grades directly?

Convert letters to grade points first (A→4.0, B→3.0 on a basic 4.0 scale), then enter points and credits per line.

Does this guarantee college admission?

No. The number is an educational illustration only and is not an admissions or scholarship decision.

Questions or feedback

Something unclear, broken, or missing? Draft a message below — we read every note about these tools.