UUID Tools

Generate

Version

Count

Format

Uppercase

v4 is fully random. v7 starts with a millisecond timestamp, so values sort by creation time (good for database keys). v1 uses a random node ID, never your MAC address. v5 always gives the same UUID for the same namespace and name.

Validate

Paste one UUID per line. Each one is checked for format, version and variant. Time-based UUIDs (v1, v6, v7) show when they were created.

Strict: canonical 8-4-4-4-12 only (no braces, URN or unhyphenated)

Rows 0

Valid 0

Invalid 0

Duplicates 0

#	Input	Status	Version	Variant	Details