Fast calculation
Calculates your input instantly in the browser.
REGEX TESTER
Test regular expressions
with clear results.
Enter a pattern, flags, and test text to inspect every match and its position locally in your browser.
- Free to use
- No sign-up
- No server uploads
Test text
Your result will appear here.
WHY THIS TOOL
Key features
Private processing
Your input is not sent to a server.
Mobile ready
Works consistently on phones and desktop browsers.
HOW TO USE
How to use it
Go from input to a copied result in three simple steps.
- 1
Enter your values.
- 2
Select the calculate button.
- 3
Review or copy the result.
FAQ
Frequently asked questions
Is my input stored?
No. This tool processes values in your current browser.
Do I need an account?
No. There is no installation or sign-up.
Can I copy the result?
Select Copy result after the calculation.