Home Regex Regular expression to validate password strength Regular expression to validate password strength byAlex R. •April 20, 2023 The following regular expression checks: Length at least 6 charachters Contains at least one uppercase letter Contains at least one lowercase letter Contains at least one digit "(?=.{6,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9]).* Tags Regex Facebook X