UUID GENERATOR

Generate RFC 4122 compliant UUIDs instantly

CLIENT
100% client-side

Everything runs locally in your browser. Your data never leaves your device - no uploads, no servers, no tracking.

All processing happens directly on your machine using JavaScript. Close the tab and everything is gone. We literally never see your data.

Zero data transmission
OUTPUT

UUID Version

0 GENERATED
0 VALID
0 DUPLICATES

Generation analytics

0
TOTAL GENERATED
0
COPIED
0
SESSIONS
v4
FAVORITE VERSION
1
AVG BATCH SIZE
0
COLLISIONS

How to use UUID generator

Generate secure, RFC 4122 compliant UUIDs in seconds

Full Documentation Docs
1

Select version

Choose UUID version (v1, v4, v5, v7, v8)

2

Set options

Choose count and format preferences

3

Generate & use

Copy or download your UUIDs

Cryptographically secure
Generate up to 100,000
Collision detection
5 UUID versions

Why choose our UUID generator?

The most secure and feature-rich UUID tool online

Cryptographically secure

Uses crypto.getRandomValues() for v4/v7/v8, not Math.random(). Bank-grade randomness.

Multiple versions

Support for UUID v1, v4, v5, v7 (time-ordered), and v8 (custom payload).

Bulk generation

Generate up to 100,000 UUIDs at once with built-in collision detection.

5 flexible formats

Output with hyphens, braces {}, quotes "", commas, and uppercase/lowercase options for any coding style.

Validation built-in

Automatic validation and collision detection for every generated batch.

One-click copy

Instantly copy generated UUIDs to clipboard. Export as TXT, JSON, or CSV for easy integration with your workflow.

Frequently Asked Questions

Everything you need to know about UUIDs

What is a UUID?

UUID (Universally Unique Identifier) is a 128-bit identifier standardized by RFC 4122. It's used to uniquely identify information without central coordination.

What's the difference between UUID versions?

v1 uses timestamp + MAC address, v4 is purely random, v5 is name-based with SHA-1, v7 uses Unix timestamp for better sorting, v8 allows custom data.

Are generated UUIDs cryptographically secure?

Yes. We use crypto.getRandomValues() for v4, v7, v8 generation, not Math.random(). This ensures cryptographic quality randomness.

Can I generate multiple UUIDs at once?

Yes. You can generate 1 to 100,000 UUIDs in one batch with built-in collision detection and various export formats.

What output formats are supported?

Standard hyphenated, uppercase/lowercase, with/without braces {}, URN format, Base64, RFC 7515, URL-encoded, CSV, JSON, and plain text.

Is UUID the same as GUID?

Yes. GUID (Globally Unique Identifier) is Microsoft's term for UUID. They are functionally identical 128-bit identifiers.

Is my data safe?

Absolutely. All UUID generation happens locally in your browser. Nothing is sent to servers, nothing is stored. 100% private.