High School GPA Calculator
Built for the 4.0 high school scale, with an optional Honors/AP weighting toggle.
How to calculate your high school GPA
- Add each class with its letter grade and credits.
- Optionally mark Honors or AP/IB classes for weighting.
- Read your high school GPA on the 4.0 scale.
Sources and methodology
The 4.0 conversion and optional Honors/AP boosts are common conventions, not a national high-school policy. Your transcript GPA may differ because schools set their own grade bands, weighting, credits, repeats, and rounding rules.
COSMIQ limitations note