UUID Generator (v4)
Generate random v4 UUIDs/GUIDs in bulk.
Use via API
Random version 4 UUIDs. Send JSON, get JSON back.
POST https://pithlab.com/api/v1/tools/uuid-generator
curl https://pithlab.com/api/v1/tools/uuid-generator \
-H "Authorization: Bearer $PITHLAB_KEY" \
-H "Content-Type: application/json" \
-d '{"count":2}'About the UUID Generator
Generate random version 4 UUIDs (GUIDs) in bulk, up to 1,000 at a time, with options for uppercase, hyphens and braces. Generated securely in your browser.
How to use the UUID Generator
- Choose how many UUIDs you need, from 1 to 1,000.
- Pick a format: uppercase, without hyphens, or wrapped in braces for Microsoft-style GUIDs.
- Press Generate, then copy the list or download it as a text file.
Examples
Input
1 UUID, default format
Output
e.g. 3f2b8c1e-9d4a-4e6b-8a7c-1b2d3e4f5a6b
Input
Uppercase, braces
Output
e.g. {3F2B8C1E-9D4A-4E6B-8A7C-1B2D3E4F5A6B}Frequently asked questions
What is a version 4 UUID?
A v4 UUID is a 128-bit identifier where 122 bits are random. The third group always starts with 4 (the version) and the fourth group starts with 8, 9, a or b (the variant).
Can two UUIDs collide?
In practice, no. You would need to generate about 2.7 quintillion v4 UUIDs to have a 50% chance of a single duplicate.
Is a UUID the same as a GUID?
Yes. GUID is Microsoft's name for the same format. GUIDs are often written in uppercase and wrapped in braces.