How we compared them
We looked at the five calculators that come up most often when students ask for a GPA tool, and compared four things: whether the calculation method is explained on the page, whether weighted and unweighted results are both available, whether planning modes exist (target GPA, cumulative combination, retake scenarios), and whether the tool needs an account or sends your transcript data anywhere. All five compute the same number for the same input — a credit-weighted average — so none of them can be 'more accurate' on the core arithmetic. The honest differences are in workflow and privacy.
The five calculators side by side
| Calculator | Best for | Standout feature | Account needed |
|---|---|---|---|
| Pearson GPA Calculator | College students planning ahead | Semester, cumulative, target-GPA and grade-retake scenarios in one tool | No |
| Calculator.net | Quick general calculations | Fast semester and cumulative GPA with a simple interface | No |
| College Transitions | High school GPA for admissions | Weighted and unweighted high school GPA from a college-counselling firm | No |
| Calculator Campus | Non-standard school scales | Custom Honors and AP grade weights you can adjust | No |
| GPACalculator.best (this site) | A private, no-setup toolkit | Weighted and unweighted GPA plus percentage, letter and scale converters, all in-browser | No |
Feature availability can change as tools are updated; check each calculator's own page for the current state. The comparisons above reflect each tool's public pages at the time of writing.
What the best calculators have in common
All of them convert letter grades to points on a published scale, multiply by credit hours, sum the quality points and divide by total credits. All of them produce a different answer from your school's official GPA when the school uses a different letter-to-points table or a different weighting bonus. That last point matters more than the choice of calculator: before comparing tools, find your school's published scale and check that the tool matches it.
Which one for your situation
- College student planning future terms: Pearson, for the target-GPA and retake scenarios.
- High school student checking admissions GPA: College Transitions, or this site's high school GPA calculator for weighted and unweighted side by side.
- Quick one-off calculation: Calculator.net or Calculi.net.
- School with unusual Honors/AP weights: Calculator Campus, or this site's GPA calculator with the course level toggled per course.
- Privacy-sensitive use (shared computer, no account): this site's calculators run entirely in the browser and transmit nothing.
An honest note on this comparison
This page is published by one of the five tools listed. We have tried to describe the competitors accurately and to state where each one does more than this site — Pearson's planning modes are the clearest example. The claims you can verify immediately are the ones about this site: every calculator here runs in the browser with no sign-up, and the scale used (A+ = 4.0, Honors +0.5, AP/IB +1.0, capped at 5.0) is documented on every page.