UUID Generator - Generate Unique Identifiers Online
Generate UUIDs (Universally Unique Identifiers) online for free. Create UUID v4 random identifiers in bulk with customizable options. No signup required.
Number of UUIDs: 1
Case Format
UUID v4 generates random 128-bit identifiers. The format is xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where x is any hex digit and 4 is the version.
No UUIDs generated yet
Configure your settings and click "Generate UUIDs" to get started
Common Use Cases
• Database primary keys
• API request identifiers
• Session tokens
• File naming
Best Practices
• Use UUID v4 for randomness
• Store as strings, not binary
• Consider indexing performance
• Use lowercase for consistency
Popular search phrases
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Guides & Resources
Learn how to use this tool effectively with our comprehensive guides and tutorials.
How to Generate Strong Passwords and UUIDs for Apps
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What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. It is typically represented as 32 hexadecimal digits displayed in five groups separated by hyphens.
What version of UUID does this generator create?
This tool generates UUID version 4 (UUID v4), which uses random numbers to create identifiers that are practically guaranteed to be unique.
How many UUIDs can I generate at once?
You can generate up to 100 UUIDs in a single operation, making it easy to get multiple identifiers for testing or bulk operations.
Is this UUID Generator free?
Yes. You can generate unlimited UUIDs online for free without any registration required.
Are the generated UUIDs stored or shared?
No. All UUID generation happens in your browser, and the identifiers are never sent to any server or stored permanently.
Can I use UUID Generator online for free?
Yes. You can use uuid generator online for free with no signup or paid plan required.