Regex Tester
Match, inspect, and optionally replace text using JavaScript regular expressions. Format, encode, or transform data without leaving your browser — ideal for API payloads, config files, and quick debugging. Input stays on your device unless a tool clearly states that it sends data elsewhere.
Last reviewed: 2026-07-23
Processed locally in your browser. Nothing is sent to a server.
Character count: 0 · Word count: 0 · Line count: 0
How to use
- Paste or type your input into the text area.
- The tool will automatically process the text and generate the output.
- Review the result and click copy to use it in your project.
Examples
Find digits
Input
Order 42 shipped
Output
Match: 42
When to use this tool
Use this tool when you need to format, encode, or transform data for development work — test regular expressions against sample text.
Privacy
Input stays on your device unless a tool clearly states that it sends data elsewhere.
Frequently asked questions
Is my data uploaded?+
No. Code and data tools run locally in your browser whenever possible.