UUID Generator
Generate v4 UUIDs in bulk
About UUID Generator
Unique identifiers power databases, distributed systems, file names, API keys and test fixtures. UUID Generator produces RFC-compliant v4 UUIDs in bulk using your browser's cryptographic random source — 122 bits of randomness means collision odds are astronomically small even at billions of IDs.
Generate one ID or thousands at once, copy them with a click, and keep working offline. Nothing is transmitted, nothing is logged — the IDs are yours alone.
Part of Toolverse's Developer Tools collection, this page also connects you to related tools so you can finish the whole job without hunting across the internet. Bookmark /tool/uuid-generator and your next uuid generator task takes ten seconds.
Part of Toolverse's Developer Tools collection, this page also connects you to related tools so you can finish the whole job without hunting across the internet. Bookmark /tool/uuid-generator and your next uuid generator task takes ten seconds.
Key Features
- check_circleGenerate v4 UUIDs in bulk — in seconds, right in your browser
- check_circleNo signup, no installation, no watermark
- check_circle100% private — files and data processed locally, never uploaded
- check_circleWorks on desktop and mobile browsers
- check_circleFree and unlimited — ad-supported, never paywalled
- check_circleWorks offline once the page has loaded
How to Use
- 1
Open the tool
Load this page — UUID Generator starts instantly, no signup or download needed.
- 2
Provide your input
Enter your input — text, numbers or options — depending on the task.
- 3
Get the result
The tool processes instantly and shows the output, with options to adjust as needed.
- 4
Download or copy
Save the result to your device or copy it to the clipboard. Done — in under a minute.
Frequently Asked Questions
What is a UUID v4?
A 128-bit identifier built from 122 random bits (6 bits fix the version/variant). Example format: 3f8a2c1e-9b4d-4c8e-a1f2-67ab89cd0123.
Can two UUIDs ever collide?
Practically no. Generating a billion UUIDs gives roughly a one-in-quadrillion chance of a single collision — negligible for any application.
Are the UUIDs generated securely?
Yes — they come from the browser's cryptographic random number generator, suitable even for unguessable identifiers.
Can I generate many UUIDs at once?
Yes — request them in bulk and copy the whole list in one click, perfect for test data and database seeding.