Generate UUIDs (v1, v4, v5, and more) instantly in your browser. Generate in bulk, copy individual IDs or the full list, and format output for use in code or databases.
Open UUID Generator → free, no sign-inUUIDs are used constantly in software development — as database primary keys, session identifiers, feature flag IDs, content identifiers, and more. Generating one in the terminal works fine (uuidgen) but getting a batch, picking a specific version, or formatting them for a SQL INSERT or JSON array quickly becomes tedious. The UUID Generator handles all of this in one place with no setup.
Developers seeding databases, QA engineers generating test data, backend engineers needing UUID batches for fixture files, and anyone who needs a quick UUID or a set of them without opening a terminal.
No tutorials. No learning curve. Open it and get started.
No server uploads. Everything runs locally in your browser. Your files and data never leave your device.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. UUID Generator was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
What is the difference between UUID v1 and v4?
v1 is time-based (includes a timestamp and MAC address component). v4 is randomly generated and is the most commonly used version.
Are the v4 UUIDs cryptographically random?
Yes — they use the browser's crypto.getRandomValues() for secure random generation.
What is UUID v5?
v5 generates a deterministic UUID from a namespace and a name — the same inputs always produce the same UUID.
Can I generate UUIDs without hyphens?
Yes — formatting options include removing the standard hyphens.
Is this free?
Yes — free with no sign-in.
Free. Instant. No sign-in. Open it and get the job done.
Open UUID Generator on Doathingy.com →