TetraKitsUUID Generator
Generate RFC 4122 version 4 UUIDs for database keys, API identifiers, and session tokens — create one or many at once and copy the list instantly.
Read: UUID Generator Guide: Create v4 Random UUIDs Online →
- Free to Use
- No Signup
- Privacy Friendly
How to generate UUIDs
- 1
Set the count
Enter how many UUIDs you need — from 1 for a single key up to 100 in bulk mode.
- 2
Generate
Click Regenerate for fresh random v4 UUIDs using crypto-grade randomness.
- 3
Copy the list
Copy all UUIDs at once to paste into SQL scripts, seed files, or API tests.
UUID v4 format
A UUID v4 is 128 random bits formatted as 36 characters with hyphens:
- Version 4 — random or pseudo-random generation
- 122 random bits — collision probability is negligible for practical use
- RFC 4122 — standard format recognized by databases and APIs worldwide
Why Use This Tool?
Bulk Generation
Create up to 100 UUIDs in one click for seed data.
Crypto Random
Uses crypto.getRandomValues for secure randomness.
Dev Ready
Quick IDs for local development and test fixtures.
Offline Capable
Generation runs entirely in the browser.
Frequently Asked Questions
What is a UUID v4?
Version 4 UUIDs are randomly generated 128-bit identifiers with extremely low collision probability.
How many UUIDs can I generate at once?
Up to 100 per batch in bulk mode. Regenerate for a fresh set anytime.
Are these UUIDs guaranteed unique?
Collision probability is astronomically low but not zero. For distributed systems, UUID v4 is standard practice.
Can I use these in production databases?
Yes. UUID v4 is supported by PostgreSQL, MySQL, MongoDB, and most modern databases.
Is this UUID generator free?
Yes. Unlimited generation with no signup.
Unique IDs Without a Backend
Database migrations, API mock servers, and frontend prototypes all need unique identifiers before infrastructure exists. Generate RFC 4122 v4 UUIDs in bulk and copy them into your schema — no npm package or terminal required.
