— Encoders & generators

UUID Generator

Generate cryptographically random version 4 UUIDs — one or a hundred at a time, with uppercase, no-dash, and braces options.

5
— What it does

The UUID Generator is a free tool that creates random version 4 universally unique identifiers (also called GUIDs) for use as database keys, request IDs, and test data. It uses your browser’s built-in cryptographic randomness, can produce up to 100 at once, and formats them as uppercase, dash-free, or brace-wrapped strings — all locally, with nothing sent to a server.

  • Generates standards-compliant version 4 UUIDs using the browser’s crypto random source.
  • Create up to 100 at once, one per line, ready to copy or download.
  • Format options: uppercase, remove dashes, and wrap in braces.
  • Runs entirely in your browser — nothing is uploaded and no UUID is logged.

How to use it

1

Choose how many

Set the count from 1 to 100 and toggle uppercase, remove-dashes, or wrap-in-braces formatting.

2

Generate

Press Generate (or Regenerate) to produce a fresh batch of random version 4 UUIDs.

3

Copy or download

Copy all UUIDs to the clipboard or download them as a plain text file, one per line.

Frequently asked

Are these UUIDs sent to or generated on a server?
No. Every UUID is generated locally in your browser using its built-in crypto random source. Nothing is uploaded, stored, or logged, so the values are safe to use as real keys.
What version of UUID does this create?
It creates version 4 (random) UUIDs, the most common type for keys and IDs. They follow the standard 8-4-4-4-12 hex layout with the version and variant bits set correctly.
How random and unique are they?
They use cryptographically strong randomness, so collisions are astronomically unlikely. A version 4 UUID has 122 random bits — generating billions of them carries a negligible chance of a duplicate.
What is the difference between a UUID and a GUID?
They are the same thing. GUID (globally unique identifier) is Microsoft’s name for a UUID, and the formats are interchangeable. The braces option produces the {GUID} style some Windows tools expect.

Related tools

Password Generator

Create strong, random passwords with full control over length and character sets — built from your browser’s cryptographic randomness.

Open tool →

Hash Generator (MD5, SHA-1, SHA-256)

Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text — instantly, as lowercase hex, in your browser.

Open tool →

Base64 Encode / Decode

Convert text to and from Base64 — UTF-8 safe, with an optional URL-safe variant and instant copy, all in your browser.

Open tool →

← All free tools

— Built by saavos

These tools are free. So is the first version of your agent.

saavos is the AI agent that lives on your website — themed to match your design, answering visitors from your own content, and telling you what they actually want to know. Paste your URL and see it answer, before you install anything.

Make my site feel alive