UUID Generator
Generate UUID v4 random identifiers.
Runs on your machine. Nothing you paste is uploaded.
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What it does
Generate UUIDs in version 1, 4, 5 or 7, from one up to 50 at a time. The list appears in an editor you can copy in one click, and an uppercase toggle switches the output to capital hex digits for systems that expect them.
Version 5 is deterministic: pick the DNS, URL, OID or X500 namespace, or paste your own namespace UUID, then enter a name and you get the same ID every time. Version 7 IDs start with a timestamp, so they sort by creation time and work well as database keys.
When you would reach for it
- Fill seed data or test fixtures with a batch of unique IDs.
- Derive a stable v5 ID from a domain or URL so every environment produces the same value.
- Pick time-ordered v7 IDs for primary keys that keep index inserts sequential.
- Grab a quick correlation ID for a log entry or a manual API request.
Also found by searching
- uuid
- guid
- random
- identifier
- unique