UUID 生成器

Generate cryptographically random UUID v4 (Universally Unique Identifier) strings instantly. UUIDs are used as unique keys in databases, session tokens, API keys, file names, and anywhere a globally unique identifier is required. Our tool generates RFC 4122-compliant UUIDs.

使用方法

1. 1Click the "Generate" button to create a new UUID.
2. 2The UUID appears in the output field immediately.
3. 3Click "Generate" again for a new unique UUID.
4. 4Use the copy button to copy the UUID to your clipboard.
5. 5Generate multiple UUIDs by clicking the button repeatedly.

功能特点

• ✓Generates RFC 4122 compliant UUID v4
• ✓Uses cryptographically secure randomness
• ✓Zero probability of generating the same UUID twice
• ✓One-click copy to clipboard
• ✓Free and no registration needed

常见问题