Free Regex Explainer
Understand any regular expression, token by token.
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About the Regex Explainer
Free regex explainer. Paste a regular expression and get a plain-English, token-by-token breakdown — anchors, groups, character classes, quantifiers and escapes. Runs in your browser.
How it works
- 1
Paste a regex
Bare pattern or /…/flags.
- 2
Read each token
Every part explained in plain English.
- 3
Learn as you go
See how groups and quantifiers work.
Frequently asked questions
Yes. Wrap the pattern like /pattern/gi and it will decode the flags too, or just paste the bare pattern.
No — it explains the pattern itself. It reads each token left to right and describes what it matches.