SHA-256 Hash Generator
Generate SHA-256, SHA-512, SHA-384 and SHA-1 hashes of text or files to verify downloads and compare data. Everything…
UUID Generator (v4)
Generate one or up to 1,000 random v4 UUIDs at once, with uppercase, no-hyphen and brace options.
How to use
- Choose how many UUIDs you need and the format.
- Click Generate.
- Copy or download the list.
What this tool does
It uses crypto.randomUUID() (or the Web Crypto random generator) to create RFC 4122 version 4 identifiers: 122 random bits each.
Frequently asked questions
Can two UUIDs be the same?
In theory yes, but with 122 random bits the chance is so small that it can be ignored for practical purposes.
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