What is a UUID / GUID Generator?
The UUID (Universally Unique Identifier) Generator creates highly secure, statistically unique 128-bit identifiers. It supports generating both Version 4 (Random) and Version 1 (Time-based) UUIDs in bulk, which are heavily used in databases and software engineering.
When building databases, APIs, or distributed systems, relying on simple incremental integers (1, 2, 3...) for IDs can lead to security flaws and data collision issues. UUIDs solve this by providing a globally unique string that ensures database records never clash, even across different servers.
How to Use UUID / GUID Generator
- 1
Select the UUID Version you need (v4 for random, v1 for timestamp-based).
- 2
Enter the number of UUIDs you want to generate in bulk (up to 500 at once).
- 3
Click the 'Generate' button to instantly create the list.
- 4
Click the 'Copy All' button to copy the entire list line-by-line.
- 5
Alternatively, copy individual UUIDs directly.
Features
- 100% Free: Unlimited use without any hidden fees or premium locks.
- No Signup: Instantly start using the utility without registering an account.
- Works in Browser: Fully client-side processing natively in your web browser.
- No Data Stored: Your inputs are not saved, logged, or recorded on any server.
- Mobile Friendly: Perfect responsive design for smartphones and tablets.
- Instant Results: Lightning fast execution with zero loading screens.
Examples
f47ac10b-58cc-4372-a567-0e02b2c3d479 (Best for primary keys)
b444b7d0-1c5c-11ed-861d-0242ac120002 (Contains MAC address and timestamp)
Quickly generate 100 IDs for populating a mock database table.
Frequently Asked Questions
Is this tool free?
Yes, generate as many UUIDs as you need for free.
Is my data safe?
Yes. All UUIDs are generated directly in your browser and are never stored.
Does it work on mobile?
Yes, it is fully responsive on mobile devices.
What is the difference between UUID and GUID?
Nothing practically. GUID (Globally Unique Identifier) is simply Microsoft's implementation of the UUID standard.
Can a Version 4 UUID ever be a duplicate?
Technically possible, but probabilistically impossible. You would need to generate 1 billion UUIDs every second for 85 years to have a 50% chance of a collision.