UUID Generator
Generate UUIDs (Universally Unique Identifiers) online. Create v4 random UUIDs for use as unique IDs in databases, APIs, software development, and testing. Generate one UUID at a time or batch-generate multiple UUIDs. Works entirely in your browser.
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How to Use UUID Generator
- Set the number of UUIDs to generate (1–100).
- Click Generate.
- Copy the generated UUIDs.
Why Use UUID Generator
UUIDs provide guaranteed unique identifiers without requiring a central authority — essential for database primary keys, API request IDs, session tokens, and distributed systems. This tool generates cryptographically random v4 UUIDs that are virtually impossible to collide.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUID v4 is randomly generated.
How many UUIDs can I generate?
You can generate a single UUID or batch generate multiple UUIDs at once by specifying the count.
Are the UUIDs truly random?
Yes. UUID v4 uses cryptographically strong random number generation to ensure uniqueness.
Can I use UUIDs in my database?
Yes. UUIDs are commonly used as primary keys in databases to ensure globally unique identifiers.
What format are the UUIDs?
UUIDs are generated in the standard format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where x is a random hex digit.