UUID Generator
Random UUID v4 values, one click. Tap any UUID to copy it.
🆔 Generated UUIDs
🔒 Private by design: this tool runs 100% in your browser — nothing is uploaded anywhere.
Free online UUID generator
This free UUID generator creates random version 4 UUIDs — the 36-character IDs used as database keys, file names and request IDs. Each one is generated with your browser crypto-grade randomness.
Generate one or fifty at once, switch to uppercase if your system needs it, and tap any UUID to copy it.
Frequently asked questions
What is a UUID v4? A 128-bit random identifier written as 8-4-4-4-12 hex digits, for example 123e4567-e89b-42d3-a456-426614174000.
Are these truly random? Yes — they use the browser crypto random generator, not Math.random.
Can two UUIDs collide? Practically never: there are about 5 × 10³⁶ possible v4 UUIDs.