Developer Tools
UUID Generator
FreeNo SignupPrivate — runs in your browser
Generate random UUID v4 identifiers online for free. Create single or bulk UUIDs for databases, APIs, and application development. No signup required.
What is UUID Generator?
UUIDs are the standard for generating unique identifiers in modern software development. Our free UUID Generator creates RFC 4122 compliant Version 4 UUIDs using cryptographically secure randomness. Generate single identifiers or thousands at once for databases, APIs, and distributed systems.
How to Use UUID Generator
- 1Click Generate to create a UUID
- 2Optionally set how many to generate
- 3Choose format (uppercase, lowercase, no dashes)
- 4Copy individual UUIDs or the entire list
Key Features & Benefits
Cryptographically secure random generation
Generate single or bulk UUIDs (up to 1000)
Multiple formats: standard, uppercase, no dashes
Instant generation with one click
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically unique across all systems. Version 4 UUIDs are randomly generated.
Can I generate multiple UUIDs at once?
Yes, you can generate up to 1000 UUIDs in one click and copy them as a list.
Are the UUIDs truly random?
Yes, they use the Web Crypto API for cryptographically secure random generation.