UUID

UUID format (any version)

Pattern

^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$

Matching examples

550e8400-e29b-41d4-a716-446655440000

Non-matching examples

not-a-uuid550e8400-e29b-41d4

Breakdown

[0-9a-fA-F]{8}
8 hex chars
-
Hyphen
[0-9a-fA-F]{4}
4 hex (repeated 3x)
-[0-9a-fA-F]{12}$
12 hex chars

Related tools

Regex TesterRegex Explainer

Other patterns

Email AddressURLIPv4 AddressStrong PasswordUS Phone NumberISO DateHex Color CodeHTML TagCredit Card NumberURL SlugMAC AddressJWT TokenSemantic VersionIPv6 Address