Skip to main content
CheckTown

Regex Explainer

Paste a regex pattern and see a plain-English explanation

Enter a regex pattern to explain

Get a plain-English breakdown of each component in your regular expression

Learn More

Regex Explainer: Understanding Regular Expressions

Demystify regex patterns with plain-English explanations.

What Are Regular Expressions?

Regular expressions (regex) are sequences of characters that define search patterns. They are used across nearly every programming language and text editor to find, match, and manipulate strings based on rules rather than exact text. A single regex pattern can match thousands of different strings that share a common structure.

6 min readRead full guide