What is a UUID (GUID)?

A UUID (Universally Unique Identifier), also called GUID (Globally Unique Identifier), is a 128-bit value used to uniquely identify objects or data across systems.
They’re widely used in databases, APIs, cryptography, and software testing to ensure every ID is truly unique.

Why Use Our Free UUID Generator?

• ⚡ Instant UUID v4 Generation – Create random IDs in one click.
• 🔒 Secure & Reliable – UUIDs are generated using random values.
• 📋 One-Click Copy – Copy UUIDs directly to your clipboard.
• 💻 No Signup Needed – 100% free, no login, no limits.
• 🌍 Developer-Friendly – Useful for testing APIs, creating mock data, or database keys.

How to Use the UUID Generator

1. Click the Generate UUID button.
2. A fresh, unique identifier appears instantly.
3. Click Copy to save it.
4. Repeat as many times as you need.

Common Uses of UUIDs

• Assigning unique IDs in databases.
• Creating secure session tokens.
• Identifying objects in distributed systems.
• Generating mock/test data for development.

FAQ

Q: Which version of UUID does this generator use?
👉 By default, it generates UUID v4, which is based on random values and is the most widely used.

Q: Are UUIDs really unique?
👉 Yes. The chances of collision are astronomically low — UUID v4 can generate 2¹²² unique values.

Q: Do I need to install anything?
👉 Nope! This tool works instantly in your browser.