Hash Generator

Hashing transforms any input into a fixed-length string of characters. Unlike encryption, hashing is a one-way function — you can't reverse a hash to recover the original input. The same input always produces the same hash, but even a tiny change in input produces a completely different output.

MD5 (128-bit) and SHA-1 (160-bit) are legacy algorithms — fast but vulnerable to collision attacks, where two different inputs produce the same hash. SHA-256 (256-bit) and SHA-512 (512-bit) are part of the SHA-2 family and are considered secure for current use.

Hashing is used for password storage (never store passwords in plain text), data integrity verification (checksums), digital signatures, and blockchain. When you "check" a password, the system hashes your input and compares it to the stored hash — the actual password is never compared or stored. This tool generates all four common hash types using the browser's Web Crypto API.