Hash Generator

A cryptographic hash is a fixed-length string generated from input data using a mathematical algorithm. Hashes are used to verify file integrity, store passwords securely, create digital signatures, and detect data tampering. The same input always produces the same hash, but it is computationally infeasible to reverse a hash back to the original data.

MD5 produces a 128-bit hash and is fast but considered cryptographically broken, so it should only be used for checksums. SHA-1 generates a 160-bit hash and is also deprecated for security purposes. SHA-256 is part of the SHA-2 family, produces a 256-bit hash, and is currently the recommended standard for security-sensitive applications.

No, hash functions are designed to be one-way operations. You cannot mathematically reverse a hash to recover the original input. However, weak or common passwords can be found through dictionary attacks and rainbow tables, which is why strong, unique inputs and salted hashing are important for password storage.

For password storage, you should not use general-purpose hashes like MD5 or SHA-256 directly. Instead, use specialized password hashing algorithms like bcrypt, scrypt, or Argon2, which are deliberately slow and include built-in salting to resist brute-force attacks.

No, all hash computations are performed entirely in your browser using the Web Crypto API. Your text never leaves your device, so it is completely safe to hash sensitive data like passwords or confidential content with this tool.