UUID Generator
Generate random v4 UUIDs (GUIDs) in bulk.
- Free, no sign-up
- Files stay on your device
- Works offline
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How to use the UUID Generator
- 1
Choose how many UUIDs you need, from 1 to 500.
- 2
Pick a format: uppercase, without hyphens, or wrapped in quotes.
- 3
Click “Generate” to create a fresh batch.
- 4
Copy them all at once or download them as a .txt file.
Frequently asked questions
Everything you need to know about the UUID Generator.
What is a UUID v4?
A version 4 UUID is a 128-bit identifier made from random numbers, written as 32 hex digits in the 8-4-4-4-12 pattern. It's widely used for database keys and IDs.
Can two UUIDs ever be the same?
In practice, no. There are 2¹²² possible v4 UUIDs, so you would need to generate billions per second for many years to have a realistic chance of a collision.
Is a GUID the same as a UUID?
Yes. GUID is Microsoft's name for the same standard. GUIDs are often written in uppercase, which you can choose here.
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