Instant Generation
Generate UUIDs instantly in your browser with one click.
Free UUID/GUID Generator & Validator
Generate and validate Universally Unique Identifiers instantly with one click.
No data stored. 100% client-side.
UUID / GUID Generator
UUID / GUID Validator
Key Features
Multiple Versions Supported
Support for v1, v4, and v5 UUIDs.
Offline & Secure
All generation and validation is client-side — no data leaves your browser.
Developer-Friendly
Copy, export, validate, and integrate UUIDs quickly.
How It Works
- Choose UUID type (v1, v4, v5) or paste an existing UUID to validate
- Click Generate or Validate
- Copy, export, or use the UUIDs in your app
Quick example using modern browsers:
const id = crypto.randomUUID(); console.log(id);Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to
uniquely identify information in computer systems. Often
represented in hexadecimal groups like 550e8400-e29b-41d4-a716-446655440000.
How is a GUID different from a UUID?
GUID is Microsoft's implementation name for UUID. They are
functionally the same.
Is this generator secure?
Yes — generation is client-side. For v4 we use secure randomness
(crypto.randomUUID or Web Crypto fallback).
Does this tool validate UUIDs?
Yes — the validator runs in your browser and checks UUID format
and version (v1, v4, v5). Paste a UUID to confirm structure and
version bits instantly.
Can I use UUIDs in databases?
Absolutely. UUIDs are commonly used as primary keys in distributed
systems and databases.
What are UUID versions 1, 4, and 5?
v1: timestamp + node identifier; v4: random; v5: namespace + name
(SHA-1 based). Different tradeoffs apply.
About UUIDs
UUIDs (Universally Unique Identifiers) are 128-bit values used to uniquely identify information in distributed systems, databases and APIs. They avoid central coordination and are perfect for generating safe unique keys client-side. This site also provides validation to confirm UUIDs are well-formed and to identify their version.
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