UUID Generator
Generate UUID v1 and v4 instantly. Choose the version, how many you need (up to 1000), uppercase, and whether you prefer the version without hyphens.
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Result (0 UUIDs · V4)
UUID v4 uses crypto.randomUUID() with a local fallback. v4 is recommended unless you need time ordering (v1).
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Frequently asked questions
What's the difference between v1 and v4?+
v4 uses random values (recommended). v1 includes a timestamp and MAC address, so it's predictable and best avoided for security.