UUID/GUID Generator
Free Online UUID Generator - Create Unique Identifiers Instantly
Generate UUIDs (Universally Unique Identifiers) for free. Supports v4 (random) and v1 (timestamp) versions. Use for development, databases, API keys, and more.
💡 What is UUID?
UUID (Universally Unique Identifier) is a 128-bit identifier that is globally unique. With extremely low collision probability, it's widely used for database primary keys, API keys, session IDs, and more.
📝 How to Use
- Select count to generate
- Choose version (v4 recommended)
- Set options (uppercase, no dashes)
- Click Generate button
- Copy and use
🔧 UUID Tips
- v4 (random): Most common, high security
- v1 (timestamp): Can be sorted by time
- Consider index performance for DB primary keys
- Suitable for API keys and tokens
- URL-safe base64 encoding reduces to 22 chars