🆔 UUID Generator
Generate UUID v4 online free — create one or hundreds of cryptographically secure unique identifiers, with uppercase and no-hyphen options. Copy or download the list instantly.
🔒 100% Private — no uploads ⚡ Instant — works offline 💸 Free forever — no sign-up
How to use the UUID Generator
- 1 Choose how many UUIDs you need (1–1000).
- 2 Toggle uppercase or no-hyphens if your system requires it.
- 3 Click Generate, then copy individual IDs or the whole list.
Frequently asked questions
What is a UUID v4?
A 128-bit identifier generated from cryptographically secure random numbers, e.g. 550e8400-e29b-41d4-a716-446655440000. The chance of two v4 UUIDs colliding is astronomically small.
Are these UUIDs secure and unique?
Yes — they are generated with crypto.randomUUID(), your browser’s cryptographically secure generator, entirely on your device.
Can I generate UUIDs in bulk?
Yes — up to 1000 at a time. Use "Copy all" to paste them into your database seed or spreadsheet.
UUID vs GUID — what is the difference?
They are the same thing. GUID is Microsoft’s name for UUID. Both follow RFC 4122.
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