UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across all systems without coordination.

What version of UUID is generated?

This tool generates UUID version 4, which uses random numbers for maximum uniqueness.

How unique are UUIDs?

The probability of generating duplicate UUIDs is astronomically low - about 1 in 2^122.

Can I generate multiple UUIDs at once?

Yes, you can generate up to 100 UUIDs at once by entering the desired count.

What's the difference between UUID and GUID?

They are essentially the same thing. GUID is Microsoft's term for UUID.

Where are UUIDs commonly used?

UUIDs are used for database primary keys, session tokens, file names, and any scenario requiring unique identifiers.

Uuid Generator

free

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About this tool

What is Uuid Generator?

A UUID Generator creates 128-bit identifiers that are virtually guaranteed to be unique across all systems worldwide. UUIDs are essential for creating primary keys, tracking entities, and ensuring uniqueness without central coordination.

Our generator creates version 4 UUIDs using random numbers with an extremely low probability of collision (about 1 in 5.3×10^36). The standard format is 8-4-4-4-12 hexadecimal characters.

UUIDs are used in databases, API identifiers, session tokens, and anywhere unique identification is required without central ID assignment.

How to Use Uuid Generator

1Click "Generate" to create a new UUID
2UUID appears in standard format
3Click "Copy" to copy to clipboard
4Generate multiple UUIDs for bulk needs
5Each generation creates new UUID
6Use in database or application

Use Cases for Uuid Generator

Database Keys

Use as primary keys in distributed databases.

API Resources

Create unique identifiers for REST API resources.

Session Management

Generate unique session tokens for auth.

File Naming

Create unique file names to prevent collisions.

Distributed Systems

Generate IDs across servers without coordination.

Features

UUID v4
Bulk generation
Standard format
Copy to clipboard
Cryptographically random
No storage
100% Free - No signup required
Instant results - No waiting
Updated for 2026 - Latest data
Privacy-first - Data never stored

Frequently Asked Questions about Uuid Generator

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UUID Generator

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