Regex Builder

Build a regular expression by stacking plain-English rule blocks — no regex knowledge required.

Runs entirely in your browser — nothing is uploaded.

Pattern

//g

In plain EnglishAdd a block below to start building your pattern.

Quick presets

Options

Find all matchesFind every match in the text, not just the first one.Ignore capitalizationTreat uppercase and lowercase letters as the same.Match line by lineMake "start of text" and "end of text" apply to each line, not just the whole passage.

Rule blocks (0)

Match specific letters, numbers, or symbols exactly as typed.

Test string

Highlighted matches0 matches

Add some blocks above to start matching.

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