UUID Generator
Generate cryptographically random UUID v4, time-ordered UUID v7, or the NIL UUID — one or thousands at a time. Choose your format and copy or download. Everything runs locally in your browser — no data leaves your device.
Generated UUIDs
About these UUID versions
v4 — random
122 bits of cryptographic randomness via the Web Crypto API. The safe default for IDs, keys and tokens.
v7 — time-ordered
A Unix-millisecond timestamp followed by randomness, so IDs sort by creation time — great as database keys.
NIL
The special all-zero UUID (00000000-0000-0000-0000-000000000000), used as a placeholder or sentinel.
Bulk
Generate up to 1,000 at once and copy or download them as a list.
Formats
Uppercase, hyphen-free, brace-wrapped {…}, urn:uuid: or quoted.
Private
Generated entirely in your browser — nothing is sent to a server.