GUID / UUID Generator
UUID v4, v7, and v1 — generate locally, no server required.
UUID version
v4 uses crypto.randomUUID(). v7 embeds a millisecond timestamp (RFC 9562). v1 uses a timestamp with a random node (multicast bit set) — not a real MAC address.
What is this tool?
A GUID/UUID is a 128-bit identifier used across databases and APIs. This tool can generate version-4 (random via crypto.randomUUID), version-7 (unix-time ordered per RFC 9562), or a lightweight version-1-style value (timestamp + random node). Choose casing and hyphens to match your stack.
How to use it
- Choose UUID version (v4, v7, or v1).
- Choose how many to generate (1, 10, or 100) and formatting options.
- Click Generate, then Copy to clipboard.
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