UUID Validator
Validate UUID format, detect version (v1-v5), verify RFC 4122 variant, and identify special UUIDs.
Enter a UUID above to validate
We'll check format, version, variant, and special UUID detection
What we check
Format Check
Validating UUID format (8-4-4-4-12 hex pattern)
Version Detection
Detecting UUID version (v1-v5)
Variant Verification
Checking variant bits (RFC 4122, NCS, Microsoft)
Special UUID Detection
Checking for nil (all zeros) or max (all ones) UUID
Learn More
Learn what UUIDs are, the differences between v1 through v7, and how to validate UUID format and structure.
What Is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit value used to uniquely identify information in computer systems. Written as 32 hexadecimal digits displayed in five groups separated by hyphens, a UUID looks like 550e8400-e29b-41d4-a716-446655440000.