UUID/GUID Generator

UUID/GUID Generator

Generate unique RFC 4122 compliant version 4 UUIDs (GUIDs) instantly. Entirely secure client-side generation.

Options:
Features

Why Use UUID Generator?

Generate standardized universally unique identifiers client-side.

📏

RFC 4122 Compliance

Generates standardized 128-bit identifiers conforming to international version 4 algorithms.

⚡

Bulk Generation

Instantly create up to 500 unique identifiers in a single click for seed databases or mock records.

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No Server Logs

All UUID keys are compiled locally in your browser memory. We never track or save generated identifiers.

⚙️

Braces & Capitalization

Configure outputs with uppercase styling, bracket structures, or clean text formats.

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Fast & Offline

Generate hundreds of cryptographically secure pseudo-random keys locally in milliseconds.

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Direct Export

Copy all generated IDs at once or copy them individually as needed.

Frequently Asked Questions

UUID stands for Universally Unique Identifier. GUID stands for Globally Unique Identifier. They are 128-bit numbers used to identify information in computer systems without central coordination.

Version 4 UUIDs use random numbers. The probability of finding a duplicate is so small that it is virtually zero (about 1 in 2^122).

Yes. Since they are cryptographically secure pseudorandom values, they are highly optimized for primary database keys, session identifiers, and file names.

Some programming languages or databases (like Microsoft SQL Server or registry files) require UUIDs wrapped in braces or without hyphens. We provide options to match any system format.

RFC 4122 is the standard specification that defines the structure and generation algorithms for UUIDs.

It is a number represented by 128 binary bits, which can hold a massive number of unique combinations, making duplicates impossible in practice.

Version 1 UUIDs are generated using a timestamp and the node's MAC address, while Version 4 UUIDs are completely random.
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