Is the uuid generator free?

Yes — 100% free, no signup, no usage limits.

Does it save my data?

No. Inputs are processed in your browser and never uploaded to a server.

Can I use it on mobile?

Yes. The interface is fully responsive and works on iOS and Android.

What's the difference between UUID v4 and v7?

v4 is fully random — great for unpredictability. v7 starts with a millisecond timestamp, so IDs generated later sort after earlier ones, which improves database B-tree index locality.

Are these UUIDs cryptographically random?

Yes. They use the browser's crypto.getRandomValues / crypto.randomUUID, the same source backing security primitives.

UUID Generator — v4 & v7 Online

Generate cryptographically random UUIDs in bulk. Pick UUID v4 (random) or v7 (time-ordered).

Count

f85b98ea-0ed5-4799-9c62-efd6049a02d4
e7d2b412-6a46-4c45-bb08-927bd99611a3
9be01b0e-945a-4dda-8ba4-5182a829cd42
06e188d4-cc60-4fe5-a7f1-9b38f61365f4
f905b0b5-7de9-47e6-ac48-9e60f5918579

How to use

Step 1: Pick v4 or v7
Step 2: Set how many to generate
Step 3: Click Generate
Step 4: Copy one or copy all

Frequently asked questions

A UUID (Universally Unique Identifier) is a 128-bit value used to label rows in databases, log entries, and distributed-system messages without coordination.