# Greatest Common Factor Calculator

> Calculate the Greatest Common Factor (GCF/GCD) of two or more numbers.

Page: https://askcalculators.com/calculator/greatest-common-factor-calculator/
Definition: https://askcalculators.com/calculator/greatest-common-factor-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/greatest-common-factor-calculator/schema.json
Version: 7.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/greatest-common-factor-calculator/?numbers=24%2C+36%2C+48

## Inputs
- numbers: Enter numbers (comma separated); type=text; optional; default=24, 36, 48

## Outputs
- result: Result; format=text; primary

## Formula
GCF is found with the Euclidean algorithm, extended across the full list.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.