Regex Editor & Tester

Matches standard 36-character UUID/GUID strings in the canonical 8-4-4-4-12 hyphen-separated hexadecimal format (e.g., 550e8400-e29b-41d4-a716-446655440000). Accepts both uppercase and lowercase hex digits and works for any UUID version. Commonly used to validate identifiers in API inputs, database fields, config files, and log parsing; note it lacks ^ and $ anchors, so it will also match UUIDs embedded within larger text.