UUID Generator: Create v1 / v4 / v5 Identifiers
Generate time-based v1, random v4 and namespace-based v5 UUIDs locally. Copy results in bulk for resource IDs, request tracing or configuration.
UUID v4 · Random
Uses cryptographically secure randomness and fits most scenarios.
Click generate to show the resultUUID v1 · Time-based
Built from timestamps and node identifiers to keep ordering.
Click generate to show the resultUUID v5 · Namespace hash
Combine a namespace and name to get a stable deterministic UUID.
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Result will appear hereChoose the Right UUID Version
Match the UUID variant to your ID strategy so values stay unique and useful.
- v4 random UUIDs suit unpredictable identifiers such as orders or session tokens.
- v1 encodes timestamps and sorts chronologically but exposes node info—keep it internal.
- v5 hashes a namespace and name into a stable value, ideal for mapping domains or paths.
All UUIDs are generated locally; nothing is sent over the network.