Hash Generator

What is a Hash Function?

A hash function takes input data of any size and produces a fixed-size output string. The same input always produces the same hash, but even a tiny change creates a completely different hash.

Common Use Cases

• Data integrity: Verify files haven't been tampered with
• Password storage: Store hashes instead of plain text
• Digital signatures: Sign document hashes for authenticity
• Checksums: Verify downloaded files are complete
• Blockchain: SHA-256 powers Bitcoin and other cryptocurrencies

Which Hash Should I Use?

SHA-256 is the current standard. SHA-512 for extra security. MD5 and SHA-1 are broken for security but still useful for checksums.