Regex String Generator 🔧

Check out some strings in the language of a formal regular expression.

Regex Checker 🦜

Check if a formal regular expression accepts a string.

Check

Notes: Use "e" for ε. The acceptable alphabet is any character except e, +, |, *, (, ).

Regex Equivalence Checker 🔁

Check if two formal regular expressions are equivalent.

Check Equivalence