🆔 UUID/GUID Generator

Generate random UUIDs (Universally Unique Identifiers) instantly. Supports UUID v4 and bulk generation. 100% client-side — nothing leaves your browser.

UUID Version:

UUID v4 (Random) UUID v7 (Time-Ordered)

Format:

lowercase UPPERCASE No hyphens

Generated UUID:

-

Bulk UUID Generator

How many UUIDs?

About UUID Generator

A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUIDs are designed to be unique across both space and time, making them ideal for database primary keys, API identifiers, and distributed systems.

UUID Versions:

UUID v4: Randomly generated. Most commonly used. 122 random bits provide 2^122 possible UUIDs.
UUID v7: Time-ordered. Uses current timestamp for better database performance. Recommended for new projects.

Common Use Cases:

Database primary keys and unique identifiers
API request/response tracking
Distributed system identifiers
Session tokens and temporary identifiers
File naming to avoid conflicts

All UUIDs are generated locally in your browser using the Web Crypto API. No data is sent to any server.

Frequently Asked Questions

Are these UUIDs truly random?

Yes! We use the Web Crypto API which provides cryptographically secure random numbers. UUID v4 uses 122 random bits, making collisions virtually impossible.

What's the difference between UUID v4 and v7?

UUID v4 is completely random, while UUID v7 includes a timestamp prefix, making it time-ordered. UUID v7 is better for database performance because it can be indexed sequentially.

Can I use these UUIDs commercially?

Yes! UUIDs are just numbers — there's no copyright or licensing restriction on using generated UUIDs.

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