Generate UUIDs with collision probability calculator
Time-based UUID using random node ID for privacy
Unix timestamp-based sortable UUID (draft RFC)
| Feature | v1 | v4 | v5 | v7 |
|---|---|---|---|---|
| Basis | Timestamp + MAC | Random | SHA-1 Hash | Timestamp + Random |
| Uniqueness | High | Very High | Deterministic | Very High |
| Sortable | Yes | No | No | Yes |
| Privacy | Low | High | High | High |
| Use Cases | Legacy systems | General purpose | Deterministic IDs | Databases, APIs |
Recommended by our team
BeLikeNative.comThe #1 AI writing tool for freelancers — perfect grammar in any language, instantly.