UUID Generator

v1.0.0

UUID Generator

Generate UUID v4, UUID v7, ULID, and NanoID identifiers. Validate and inspect existing IDs. Everything runs locally in your browser.

ID Type

Count:max 100

UppercaseHyphens

Validate & Inspect

UUID v4

Randomly generated 128-bit identifier (RFC 4122). Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx. With 2^122 possible values, collision probability is negligible.

UUID v7

Timestamp-sortable UUID (RFC 9562). First 48 bits encode Unix timestamp in milliseconds, making them naturally sortable by creation time while retaining randomness.

ULID

Universally Unique Lexicographically Sortable Identifier. 26-character Crockford Base32 string with 48-bit timestamp + 80-bit randomness. Case-insensitive, no special characters.

NanoID

Compact, URL-safe unique identifier. Default 21 characters using A-Za-z0-9_-. Configurable alphabet and length. No embedded metadata.

Privacy Notice

All IDs are generated locally using crypto.getRandomValues(). Nothing is sent to any server.