Regex Tester

Test a JavaScript regular expression against a sample string.

Pattern

Flags

Calculated Result

3 matches

Hello · Calnora · 2026

Formula: RegExp matchAll

About this calculator

Type a pattern, flags such as i or m, and a test string. Matches are listed in order. A bad pattern shows the engine error.

FormulaRegExp(pattern, flags) then matchAll on the test string

new RegExp(pattern, flags) then matchAll. The global flag is added so every match is collected.

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