eb7effed-e88f-4c0a-844f-e708d36d436e 4bc038a2-41d3-4344-bbdb-9c8435acbfcd f2f03a11-b9b0-4eda-b6e7-141d23dd5335 f50d5078-66c7-456b-8836-f90138f38a12 bbf42760-de5c-4825-9704-057872d639f8 8a2050f6-0148-4c97-ab80-5bc83e1119e2 1dff2d4e-3095-48a1-82d7-b4016ff7579f 66bf35e7-0b6a-4e12-a0a2-449b4d0fbe24 8e6c2bd2-6647-42a8-a282-5775e9ba1455 6f152704-32d9-4f59-a285-fb6175796895 25e59abf-1c7a-40f8-b8e1-8499f912a188 5da05b1d-fa8c-41b8-8caf-8ca7774b884b
The UUID Generator creates universally unique identifiers in your browser. Generate random version 4 UUIDs, time-based version 1 UUIDs or the nil UUID, one at a time or in bulk, and copy them as a list for database primary keys, API test fixtures, idempotency keys or seed data.
Version 1 UUIDs are built from a timestamp and node value, so they sort roughly by creation time. Version 4 UUIDs are random, which makes them the usual choice for IDs that must not reveal when they were created.
In practice, no. A v4 UUID has 122 random bits, so you would need to generate billions per second for many years before a collision became likely.
Yes. GUID is Microsoft's name for the same 128-bit identifier format defined in RFC 9562 (formerly RFC 4122).
Last updated: October 2026 · Built by Derar Sattouf