Configuration

Generated Output

// UUIDs will appear here

Free UUID & GUID Generator — Create Unique Identifiers

When building databases, distributed systems, or software applications, you need identifiers that are guaranteed to be unique across all devices and servers. Our UUID/GUID Generator provides a fast, one-click solution to generate standard Version 4 Universally Unique Identifiers (UUIDs). Generate perfectly formatted cryptographic strings instantly.

Cryptographically Secure: Not all random number generators are created equal. Our tool utilizes the browser's native Web Crypto API (specifically crypto.randomUUID() or high-entropy fallback algorithms) to ensure that the generated identifiers meet strict cryptographic standards, virtually eliminating the possibility of a collision.

Bulk Generation and Local Execution: Need hundreds of UUIDs for database seeding or testing? Our tool allows you to generate massive batches of identifiers instantly. Because all generation happens locally on your machine, it's incredibly fast. Your newly minted IDs are never logged or stored on our servers, ensuring pristine data integrity for your projects.

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Frequently Asked Questions

What version of UUID does this tool generate? +
The generator creates Version 4 UUIDs. Version 4 UUIDs are completely random and rely on strong pseudorandom number generators, making them the industry standard for generating unique database keys.
What is the difference between a UUID and a GUID? +
Functionally, there is no difference. UUID (Universally Unique Identifier) is the standard term, while GUID (Globally Unique Identifier) is Microsoft's terminology for the exact same 128-bit identifier standard.
Is there a chance of generating a duplicate UUID? +
The mathematical probability of generating a duplicate UUIDv4 is practically zero. You would need to generate 1 billion UUIDs every second for 85 years to have just a 50% chance of a single collision.