Regex Tester

Test and validate regular expressions using .NET's System.Text.RegularExpressions

Pattern & Input

Regular Expression Pattern

Test String

Options

Ignore Case

Multiline (^ $ per line)

Singleline (. matches \n)

Ignore Whitespace

Explicit Capture

Right to Left

Match Replace Split

Results 0 matches

Quick Reference

. Any character
\d Digit [0-9]
\w Word char [a-zA-Z0-9_]
\s Whitespace
^ Start of string
$ End of string

* 0 or more
+ 1 or more
? 0 or 1
{n,m} n to m times
() Capture group
[] Character class