UUID Generator

All Versions • 100% Private • Instant • Offline

Choose a version and click Generate
v1: Time + MAC • v4: Random • v5: SHA-1(name) • v7: Modern sortable • 100% client-side

Why Use Our UUID Generator?

Unique Database Keys

Generate collision-free IDs for distributed databases without coordination.

API & Session Tokens

Create secure, unpredictable identifiers for authentication and tracking.

Testing & Mock Data

Bulk generate realistic UUIDs for development, QA, and data seeding.

Logging & Tracing

Use v7 for time-sortable IDs to correlate events in microservices.

Name-Based Hashing

v5 turns strings (e.g., URLs, usernames) into consistent UUIDs.

Privacy-First

100% browser-based — no server calls, works offline forever.

Frequently Asked Questions

What is a UUID?

Universally Unique Identifier — a 128-bit number for unique identification in software systems.

v1 vs v4 vs v5 vs v7?

v1: Time + hardware. v4: Random. v5: Hash-based. v7: Modern time-ordered (sortable).

Is this tool secure?

Yes! Uses crypto API for randomness. All processing in-browser, no data sent.

How to use v5?

Enter a namespace UUID and name string — generates deterministic IDs.

Can I generate bulk UUIDs?

Yes, up to 10,000 at once. Download as .txt or .json for easy import.

Does it work offline?

Absolutely. Bookmark or add to homescreen — functions without internet.