UUID & Hash Generator
Generate UUID v4 identifiers and compute cryptographic hashes instantly.
UUID v4 Generator
Hash Generator
About this tool
Generate UUID v4 identifiers and compute MD5, SHA-1, SHA-256, SHA-512 hashes instantly. Bulk UUID generation, uppercase/lowercase options. Free, browser-based.
Frequently asked questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier formatted as 32 hex digits in 5 groups (e.g. 550e8400-e29b-41d4-a716-446655440000). UUID v4 is randomly generated.
What hash algorithms are supported?
MD5, SHA-1, SHA-256, and SHA-512. SHA-256 and SHA-512 use the browser native crypto.subtle.digest API for performance and security.
Are UUIDs guaranteed unique?
UUID v4 has 122 random bits giving 5.3 x 10^36 possible values. Collision probability is astronomically low but not mathematically zero.