A GPA calculator turns letter grades and credit hours into a single 4.0-scale average. US students search GPA calculator and college GPA calculator during registration and scholarship checks. This page shows the credit-weighted formula next to the live tool.
The Formula Behind the GPA Calculator
GPA = Σ (grade points × credits) ÷ Σ credits
Common map: A/A+ = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, … F = 0. Your school may publish a different table — always prefer the registrar’s chart.
When This Calculator Helps
Estimate semester GPA before finals, compare “what if I get a B vs A-”, or check credit weighting. Not an official transcript.
Using the Calculator
- Enter the values labeled in the tool above.
- Read the result cards — they update as you type.
- Cross-check one example by hand using the formula in this section.
- Open a related calculator below if your question needs a different formula.
Mistakes to Avoid
- Using unweighted averages when credits differ
- Ignoring plus/minus scales your school uses
- Treating this result as an official transcript GPA
Getting the Most Out of It
- Pair with the Grade Calculator for category-weighted course scores
- Confirm honors/AP weighting rules with your school
More Calculators to Try
Where the Estimate Falls Short
Results are estimates for learning and planning. They are not loan offers, tax filings, payroll determinations, or professional advice. Review our disclaimer.