What is the difference between UUID and GUID?

They're effectively the same concept -- GUID (Globally Unique Identifier) is Microsoft's term for what's standardized elsewhere as a UUID (Universally Unique Identifier); this tool generates standard RFC 4122 version-4 UUIDs, which work as GUIDs too.

Can I generate multiple UUIDs at once?

Yes -- set the count you need and generate a batch in one go, with an option to control letter casing (uppercase/lowercase) in the output.

developer Client-Side Only

UUID / GUID v4 Generator

Generate cryptographically random RFC 4122 compliant version-4 UUID identifiers in batches.

Quantity (1-50)

UppercaseNo Hyphens

a1b2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d

f6e5d4c3-b2a1-4098-9fed-cba987654321

12345678-1234-4000-8000-123456789abc

87654321-4321-4000-8000-cba987654321

00000000-0000-4000-8000-000000000000

Zero-Leakage Local Processing

All text formatting, JSON/JWT parsing, cryptographic hashing, and image compression execute entirely inside your browser. No private data is ever sent to Burnjet servers.

Quick Reference & Instructions

Simple steps, pro tips, and execution details

Paste or Enter Input

Paste your raw JSON, code snippet, tokens, or values into the input panel.

Select Options & Modes

Choose formatting options, indentation spaces, or target conversion standards.

Copy or Download Output

One-click copy to clipboard or download the formatted file ready for production.

How It Works

Generates v4 UUIDs using standard pseudo-random entropy algorithms with customizable count and casing.

Frequently Asked Questions

Common questions about calculations, assumptions, and edge cases.

Practically negligible -- a v4 UUID has 122 random bits, meaning you would need to generate billions of UUIDs before the probability of a single collision becomes meaningful.