SHA-1 Hash Generator
Generate SHA-1 hash values from any text input. Client-side hashing produces a 40-character hexadecimal string. Useful for checksums and Git.
Examples
Simple text
In:Hello, World!
Out:4ca9653095931ef15cb6b02d72f621e1bcbb856b
Git-style content hashing
In:tree 0a1b2c3d4e5f
File integrity check
In:check this file content
Hash will appear here as you type...
How to Use SHA-1 Hash Generator
- Type or paste your text in the input area.
- The SHA-1 hash is computed instantly as you type.
- Click "Copy" to copy the hash.
SHA-1 (Secure Hash Algorithm 1) takes any input and produces a fixed 160-bit hash value, displayed as a 40-character hexadecimal string. It is a one-way function — you cannot reverse the hash to recover the original input.
While SHA-1 was once widely used for cryptographic purposes, collision vulnerabilities have been found, making it unsuitable for security-critical applications. It remains useful for checksums, data integrity verification, and systems like Git.