UUID Generator
💡 What is UUID? UUID (Universally Unique Identifier) is a 128-bit unique identifier. With extremely low collision probability, it's used for database keys, API tokens, and more.
Standard RFC 4122 - UUID v4 (Random)
Format Examples
UUID Generator creates random UUIDs (v4) according to RFC 4122 standard. These 128-bit unique identifiers are used for database keys, API tokens, and more.
How to Use
- 1
Select number of UUIDs to generate (1-100)
- 2
Click "Generate" button to create UUIDs
- 3
Copy or download generated UUIDs
- 4
Customize options: with/without hyphens, uppercase/lowercase
Use Cases
Database Keys
Use as collision-free unique primary keys.
API Tokens
Generate API keys, session IDs, and auth tokens.
File Names
Create unique file or directory names without conflicts.
Distributed Systems
Generate IDs independently across different servers.
What is UUID v4?
UUID (Universally Unique Identifier) is a 128-bit unique identifier.
v4 uses random generation with extremely low collision probability (2^122 possibilities).
Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx (8-4-4-4-12 digits)
Follows RFC 4122 standard, supported by most programming languages and databases.
Frequently Asked Questions (FAQ)
Q.Are UUIDs truly unique?
A. Yes. The collision probability is astronomically low, making them practically unique.
Q.Difference between v1 and v4?
A. v1 is timestamp-based, v4 is fully random. v4 is more secure.
Q.Is data sent to servers?
A. No. All generation happens in your browser and nothing is transmitted.
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