A UUID (Universally Unique Identifier) is a 128-bit identifier that is guaranteed to be unique. Version 4 UUIDs are randomly generated.

Are the UUIDs cryptographically random?

Yes, they use your browser's crypto.randomUUID() API which provides cryptographically secure random values.

Can I generate multiple UUIDs at once?

Yes, you can generate up to 100 UUIDs at a time.

UUID Generator

Generate cryptographically random UUIDs (v4) using your browser's built-in crypto API. Generate one or up to 100 at a time, with options for uppercase and removing dashes.

Count

UppercaseNo dashes

Click Generate to create UUIDs.

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How to Use UUID Generator

Open the UUID Generator
Set the number of UUIDs to generate
Choose options (uppercase, no dashes)
Click Generate
Click Copy next to any UUID or Copy All

Frequently Asked Questions

What is a UUID?: A UUID (Universally Unique Identifier) is a 128-bit identifier that is guaranteed to be unique. Version 4 UUIDs are randomly generated.
Are the UUIDs cryptographically random?: Yes, they use your browser's crypto.randomUUID() API which provides cryptographically secure random values.
Can I generate multiple UUIDs at once?: Yes, you can generate up to 100 UUIDs at a time.

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About UUID Generator

Generate random UUIDs (v4) online. Free UUID/GUID generator with bulk generation, uppercase, and no-dash options. This tool runs entirely in your browser, so your content is not sent to a server. MarkdownMe provides free, fast, and reliable Markdown tools for developers, writers, and anyone who works with Markdown.