HomePassword Strength Checkers
Password Strength Checkers
Security policies, complexity checks, and entropy rules.
30 Tools Available
Complex (Standard)
Common 4-rule complexity.
/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$/
Min 8 Chars
Basic length check.
/^.{8,}$/
Min 10 Chars
Better length check.
/^.{10,}$/
Min 12 Chars
Strong length check.
/^.{12,}$/
Upper & Lower
Requires both cases.
/(?=.*[a-z])(?=.*[A-Z]).+/
No Special Chars
Alphanumeric only.
/^[a-zA-Z0-9]+$/
At Least One Digit
Requires a number.
/(?=.*\d).+/
At Least One Symbol
Requires special char.
/(?=.*[@$!%*?&]).+/
No Whitespace
No spaces allowed.
/^\S+$/
Pin Code 4
4-digit PIN.
/^\d{4}$/
Pin Code 6
6-digit PIN.
/^\d{6}$/
Hex Password
Hexadecimal characters only.
/^[0-9a-fA-F]+$/
Base64 String
Valid Base64 string.
/^[a-zA-Z0-9+/]+={0,2}$/
MD5 Hash
MD5 checksum format.
/^[a-f0-9]{32}$/
SHA-1 Hash
SHA-1 checksum format.
/^[a-f0-9]{40}$/
SHA-256 Hash
SHA-256 checksum format.
/^[a-f0-9]{64}$/
Bcrypt Hash
Bcrypt hash format.
/^\$2[ayb]\$.{56}$/
UUID / GUID
UUID format.
/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/
Mac Address
Hardware MAC address.
/^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$/
Strong Entropy
High entropy rule.
/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{12,}$/
Common Pwd Filter
Block common passwords.
/^(?!password|123456|qwerty).*$/
Max Repeating Chars
No char repeats 4x.
/^(?!.*(.)\1{3}).*$/
Sequence Check
No simple sequences.
/^(?!.*(123|abc)).*$/
Lowercase Only
Lowercase only.
/^[a-z]+$/
Uppercase Only
Uppercase only.
/^[A-Z]+$/
Digits Only
Numeric password.
/^\d+$/
Length 8-20
Restricted length.
/^.{8,20}$/
Custom Policy
Allowed chars only.
/^[A-Za-z0-9_@./#&+-]*$/
API Key Format
Standard API key format.
/^[A-Za-z0-9]{32,}$/
JWT Token
JSON Web Token.
/^[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+$/