UUID Generator
Unique IDs.
As many as you need.
0 UUIDs
Choose v4 (random) or v7 (time-ordered), how many you need (up to 1,000) and a format, then copy or download them. IDs are generated in your browser with a cryptographically secure random generator.
UUID versions compared
| Version | Built from | Sortable | Use |
|---|---|---|---|
| v1 | Timestamp + MAC address | Partly | Legacy; reveals the machine |
| v4 | 122 random bits | No | General-purpose IDs |
| v7 | Unix ms timestamp + random | Yes | Database keys, logs |
Why it matters that this runs locally
Many online developer tools send what you paste to a server — risky when it contains API keys, session tokens, customer data or proprietary code. This tool runs entirely in your browser: open your browser's Network tab and you will see that nothing you type is sent anywhere.
Related tools
Frequently asked questions
- Should I use UUID v4 or v7?
- v4 is fully random and the most widely supported. v7 starts with a timestamp, so new IDs sort after older ones — better for database primary keys because inserts stay in index order.
- Can two UUIDs collide?
- In practice, no: a v4 UUID has 122 random bits, so you would need to generate billions per second for decades before a collision became likely.
- Is my data sent to a server?
- No. Everything runs in your browser, so tokens, keys, passwords and other sensitive data you paste never leave your device.