UUID generator
Generate identifiers in bulk for every version from v1 to v8
v1, v2, v6, v7 and v8 carry a timestamp; v3 and v5 are derived from a namespace and a name; v4 is fully random. To inspect the version and fields of a UUID, head to UUID parser.
Generated IDs
Waiting UUID listOne per line
Generated—
Version—
Kind—
Total characters—
Version notesHow time, names, and random sources differ
v1 · Timestamp A 100 nanosecond timestamp plus a clock sequence, with a random node
v2 · DCE security Like v1, but the domain number replaces the low clock sequence bits
v3 · MD5 name MD5 digest of the namespace joined with the name
v4 · Random Fully random source, with the widest compatibility
v5 · SHA-1 name SHA-1 digest of the namespace joined with the name
v6 · Reordered time The v1 timestamp reordered with the high bits first, so it sorts naturally
v7 · Unix milliseconds The first 48 bits are Unix milliseconds, which suits database primary keys
v8 · Custom Experimental: a millisecond timestamp prefix followed by a custom payload