Last reviewed August 28, 2026

GPA Calculator: Practical Planning & Interpretation Guide

Calculate semester and cumulative GPA from course credits and grades, then model what-if grade scenarios.

Weight grades by credits

A three-credit course and a one-credit course should not influence GPA equally. This calculator multiplies grade points by credits before dividing by total credits.

Use what-if rows before grades are final

Change expected grades to see how different outcomes affect the semester result without altering your official transcript.

Check your institution scale

Schools differ on plus/minus grades, repeats and weighted policies. Use the grade-point mapping that matches your institution.

Export a planning record

Download course data as CSV so you can keep a semester-by-semester planning history.

Try the browser tool

Work with your file locally.

Open GPA Calculator