Regex Tester

Test and debug regular expressions with real-time matching

Regular Expression Pattern

Flags

Common Patterns

Test String

Highlighted Matches

Enter test string to see matches

Replacement Text (Optional)

Use $1, $2, etc. for capture groups, $& for entire match

Replacement Result

Enter replacement text above

\d - digits (0-9)

\w - word chars (a-z, A-Z, 0-9, _)

\s - whitespace

. - any character

[abc] - a, b, or c

[^abc] - not a, b, or c

* - 0 or more

+ - 1 or more

? - 0 or 1

{n} - exactly n

{n,} - n or more

{n,m} - between n and m

^ - start of string

$ - end of string

\b - word boundary

() - capture group

(?:) - non-capture group

| - alternation (or)