Generate UUID

Generate one or more random version 4 UUIDs. Each UUID is statistically unique (128 bits, 2^122 possibilities). Useful for database identifiers, session tokens, or unique references.

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Generate UUID v4

Choose the quantity, copy one line or the whole set, then regenerate instantly.

Number of UUIDs: 1

0 UUID

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Generate one or more random version 4 UUIDs. Each UUID is statistically unique (128 bits, 2^122 possibilities). Useful for database identifiers, session tokens, or unique references.

UUID v4 are random, unlike v1 which embed the date and MAC address
The probability of collision between two UUID v4 is equivalent to that of two identical avalanches
Lowercase UUIDs are the JSON standard, but uppercase also works

Generated example: 550e8400-e29b-41d4-a716-446655440000. The 4 in the third block indicates version 4. The 8, 9, a or b in the fourth block indicate the RFC 4122 variant.

Generating 100 UUIDs at once is instantaneous. Use this function to prepare identifiers for a database or migration.

Generate UUID

Generate UUID v4

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Generate UUID

Generate UUID v4

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