What is the difference between UUID versions?

UUID v1 is time-based, v4 is random, and v5 is name-based using SHA-1 hash. v4 is most commonly used for its simplicity and randomness.

Are UUIDs truly unique?

Yes, the probability of generating duplicate UUIDs is astronomically low. v4 UUIDs have 2^122 possible values.

Can I generate UUIDs in bulk?

Yes, you can generate up to 100 UUIDs at once. Copy them all with a single click.

What format are the UUIDs in?

UUIDs are generated in the standard format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx (32 hexadecimal characters with hyphens).

UUID Generator

Generate universally unique identifiers (UUIDs) for your applications and databases.

UUID Version

How many UUIDs to generate?

Uppercase Without hyphens With braces {}

Generated UUIDs

What is this tool?

A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across space and time. Also known as GUID (Globally Unique Identifier), UUIDs are used in software development for database records, session IDs, API keys, and anywhere a unique identifier is needed.

How to use this tool?

1. Select the UUID version (v1, v4, or v5) 2. For v5, enter a namespace and name 3. Choose how many UUIDs to generate 4. Click "Generate" to create UUIDs 5. Copy individual UUIDs or all at once 6. Use in your applications or databases

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UUID Generator

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