GeneratorsRuns locally · No upload

UUID Generator Online Free

Create RFC 4122 UUID v4 values for databases, API keys, and test fixtures. Generate one or many at once, copy with one click, and keep everything local — no server round-trip.

Browser Tools vs Server Upload — Why Local Processing Matters
Private by design

Everything runs in your browser. Your input is never uploaded, stored, or logged on our servers.

Works offline after load

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Frequently asked questions

How do I generate a UUID online for free?+

Click Generate to create a cryptographically random UUID v4 instantly. Copy one UUID or generate multiple at once — all in your browser.

What UUID version does this generate?+

UUID v4 — random 128-bit values per RFC 4122, suitable for most database primary keys and API identifiers.

Is this tool free?+

Yes. Every Utiliio utility is free with no sign-up, usage limits, or paywalls.

Do you store my data?+

No. Processing happens entirely in your browser. Your input never leaves your device.

Can I use this tool offline?+

Yes. Once the page loads, most tools continue working without an internet connection.