What is UUID Generator?
UUID (Universally Unique Identifier) generators create random 128-bit IDs, typically version 4 (random). Developers use them as primary keys in databases, session tokens, file names, and distributed systems where collision-free IDs are required.
Generate UUID v4 identifiers. Create one or many UUIDs and copy instantly.
Try it now
Open the free UUID Generator and follow the steps below — no download required.
Why use UUID Generator?
- Generate standards-compliant UUID v4 instantly
- Create multiple IDs for batch testing
- No server round-trip — runs in your browser
- Copy IDs with one click for APIs and configs
How to use UUID Generator — step by step
- Step 1: Choose how many UUIDs to generate.
- Step 2: Click Generate.
- Step 3: Copy one or all.
The UUID Generator lives under Developer Tools. Open the tool page, enter your input in the main field, and results update instantly. Use the copy button to paste output into documents, code editors, or spreadsheets.
Common use cases
Database primary keys
Use UUIDs instead of auto-increment integers in microservices.
API testing
Generate unique request IDs in Postman or curl scripts.
Examples
- Single UUID: e.g. 550e8400-e29b-41d4-a716-446655440000
Pro tips
- Use crypto.randomUUID() in production code when available.
- Never use Math.random()-based UUIDs for security-sensitive tokens.
Frequently asked questions
Are UUIDs unique?
v4 UUIDs are statistically unique; collisions are extremely unlikely.
Related tools you might need
Explore other developer tools on ToolsMinify. Related utilities are linked on the UUID Generator page to help you complete your workflow without leaving the site.
Ready to start?
Use the UUID Generator for free — accurate, fast, and optimized for mobile.