5
What This Tool Does
Generate unique UUIDs and GUIDs instantly for databases and APIs.
This UUID generator creates universally unique identifiers (UUIDs) and GUIDs instantly. You can generate multiple UUIDs at once, choose between Version 4 (random) and Version 1 (timestamp-based), and customize the output format.
When to Use This Tool
- Create database primary keys
- Generate session identifiers
- Create API request IDs
- Generate unique identifiers for distributed systems
How to Use
- Select quantity and version
- Click "Generate UUIDs"
- Copy the results
Frequently Asked Questions
Is my data sent to a server?
No. Most tools process data directly in your browser. Some
features may require server processing — see Privacy Policy.
What is the difference between UUID and GUID?
UUID and GUID are technically the same thing. GUID is
Microsoft's term for UUID. Both are 128-bit identifiers formatted as 32
hexadecimal digits.
Which UUID version should I use?
Version 4 (random) is most commonly used and recommended.
Version 1 (timestamp) is useful when you need sortable IDs based on creation
time.
Are generated UUIDs truly unique?
UUIDs are designed to be practically unique. With 2^122
possible values for Version 4, the probability of a duplicate is astronomically
low.