UUID v5 Generator — Namespace + Name UUID Online
UUID v5 is deterministic: given the same namespace UUID and name string, it always produces the same UUID. This makes it ideal for content-addressable IDs, URL-based identifiers, and deduplication.
Example UUID v5
886313e1-3b8a-5372-9b90-0c9aee199e5dGenerate UUID v5
3ed13a73-f025-45ee-85d8-21ee9d45948bBit breakdown
FAQ
What namespaces does UUID v5 support?
Four standard namespaces are defined: DNS (6ba7b810-...), URL (6ba7b811-...), OID (6ba7b812-...), and X500 (6ba7b814-...). You can also use any valid UUID as a custom namespace.
Is UUID v5 reversible?
No. UUID v5 is a one-way hash (SHA-1) of the namespace + name. You cannot derive the original name from the UUID. It is safe to share publicly.
What's the difference between UUID v3 and v5?
UUID v3 uses MD5 hashing; UUID v5 uses SHA-1. v5 is preferred because SHA-1 has better collision resistance than MD5, though neither should be used for security-critical hashing.
Need a different UUID version? The full generator supports v1, v4, v5, v7, and ULID.
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