UUID Generator

Choose version, count, and format, then press Generate.

Generated on this device — nothing is uploaded.

Version

v4 v7

Count (1–100)

Case

lower UPPER

Hyphens

with hyphens

Result

UUID Generator

Generate UUID version 4 and version 7 in your browser. Identifiers stay on your device — nothing is uploaded.

Generate

Pick version 4 or version 7 and a count from 1 to 100, then press Generate. Generation uses only the Web Crypto API (crypto.getRandomValues). There is no UUID version 1 and no server-side generation.

Format

Lower or UPPER case, and with or without hyphens, applies to the result, to copy, and to the text file. Each UUID is on its own line.

Copy and save

Copy one copies the line at the cursor, or the first line if the result is not focused. Copy all copies every line. Save .txt downloads the same text. Clear empties the result.

Privacy

Generation runs on your device. There is no upload, no account, and no server-side storage of the identifiers.

What is the difference between v4 and v7?

Version 4 is random. Version 7 starts with a Unix timestamp in milliseconds and fills the rest with random bits. Both use the RFC 9562 variant.

How many UUIDs at once?

Between 1 and 100. Each line is one UUID.

Do the UUIDs leave the browser?

No. Generate, copy, and save stay local. Save is a download of a text file to your device.

Can I validate a UUID here?

No. This tool only generates UUIDs. It does not parse or validate them.