# GCF Calculator

> GCF Calculator: a free greatest common factor (GCF/GCD/HCF) calculator with step-by-step prime factorization and the least common multiple (LCM), run entirely in the browser, no sign-up required.

Sitemap: https://gcf-calculator.xyz/sitemap.xml

## Tools

- [GCF Calculator](https://gcf-calculator.xyz/): Enter two or more whole numbers, get the GCF, LCM and prime factorization work instantly.
- [How to Find the GCF](https://gcf-calculator.xyz/how-to-find-gcf/): Three worked methods: listing factors, prime factorization, and the division (Euclidean) method.
- [GCF Reference Chart](https://gcf-calculator.xyz/gcf-chart/): A quick-lookup table of the GCF for common number pairs from 1 to 30.

## About this site

GCF Calculator finds the greatest common factor (also called GCD or HCF) of two or more whole numbers, shows the prime factorization work for each number, and also computes the least common multiple (LCM) of the same numbers. Everything runs locally in the browser, no input is sent to or stored on a server.

Site: https://gcf-calculator.xyz