UUID Generator
Generate random UUIDs (Universally Unique Identifiers). Create v4 or v1 UUIDs in bulk with customizable formatting.
Features
- UUID v4 (random)
- UUID v1 (timestamp)
- Bulk generation
- Formatting options
- One-click copy
- Copy all at once
How to Use
- 1Select UUID version
- 2Set quantity needed
- 3Choose format options
- 4Click Generate
- 5Copy individual or all
About UUID Generator
In software development and database architecture, having truly unique global identifiers is absolutely essential. Our free online UUID generator allows developers to instantly create random, highly secure Universally Unique Identifiers (UUIDs) or Globally Unique Identifiers (GUIDs). Whether you need to generate primary keys for a new SQL database or assign tracking IDs to API requests, this tool provides instant, collision-free values.
Unlike basic random string generators, this tool follows strict RFC 4122 specifications, ensuring your identifiers are compatible across all major programming languages and frameworks. As a fast bulk GUID creator, you can quickly generate up to 100 UUIDs at a time, select between timestamp-based (v1) or fully random (v4) formats, and customize the output—such as removing dashes or forcing uppercase characters. Best of all, they are generated securely in your browser so no data ever passes through an external server.
Frequently Asked Questions
What's the difference between v1 and v4?
V4 is purely random, while v1 is based on timestamp and MAC address. V4 is more common and recommended for most uses.
Are these UUIDs truly unique?
V4 UUIDs have 122 random bits, making collisions virtually impossible (1 in 2^122).