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UUID Generator

Network

Generate v1, v4, v5, and v7 UUIDs

Generates batches of UUIDs across the versions that actually get used day to day: v4 for the default random case (database keys, request IDs, test fixtures), v7 when you specifically want IDs that sort chronologically for time-ordered indexes, and v5 when you need a deterministic ID that's always the same for the same namespace-plus-name input. v4 generation uses the Web Crypto API, appropriate for non-secret identifiers, though UUIDs of any kind should never double as access tokens or secrets. With 122 random bits in a v4 UUID, collision risk isn't a practical concern at any realistic scale. The same generator is available through the REST API and both SDKs, so scripted or bulk generation doesn't require the browser UI at all.

uuidguidgenerate

How to use UUID Generator

  • 1.Generate a batch of v4 (random) UUIDs for use as database primary keys, request IDs, or test fixtures.
  • 2.Generate a v7 UUID when you need IDs that sort chronologically (useful for time-ordered database indexes).
  • 3.Generate a v5 UUID from a namespace + name when you need the same input to always produce the same deterministic ID.

Frequently asked questions

Which UUID version should I use?
v4 (random) is the standard default for most applications. Use v7 if you need IDs that sort by creation time, and v5 if you need deterministic IDs derived from existing data.
Are these UUIDs cryptographically secure?
v4 UUIDs are generated using the browser's Web Crypto API, which is suitable for non-secret identifiers, but UUIDs should never be used as secrets or access tokens.
Can two generated UUIDs collide?
The probability is astronomically small (v4 has 122 random bits) — collisions are not a practical concern at any realistic scale.
Can I generate UUIDs programmatically?
Yes — the same generator is available via the REST API (/v1/tools/uuid) and the Node.js/Python SDKs for use in scripts and backends.

Use via API, SDK, or MCP

cURL# Free: 1,000 req/day · Pro: 10,000 req/day
curl -X POST https://api.utilix.tech/v1/tools/uuid \
  -H "Authorization: Bearer utx_live_..." \
  -H "Content-Type: application/json" \
  -d '{"count":1}'

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