Hash Generator

A hash function is a one-way mathematical function that converts input data (text, files, etc.) into a fixed-size string of characters. Hash functions are deterministic (same input always produces same output) and are commonly used for data integrity verification, password storage, and digital signatures.

MD5 produces a 128-bit (32 character) hash and is considered cryptographically broken and unsuitable for security purposes. SHA-256 produces a 256-bit (64 character) hash and is widely used and considered secure. SHA-512 produces a 512-bit (128 character) hash and is more secure but larger. For security applications, use SHA-256 or SHA-512, not MD5.

No, hash functions are one-way functions. You cannot reverse a hash to get the original input. However, attackers can use rainbow tables or brute force to find inputs that produce the same hash (collisions), which is why MD5 is considered insecure.

While this tool generates hashes, it's not recommended for actual password storage. For passwords, use proper password hashing functions like bcrypt, scrypt, or Argon2, which include salting and are designed specifically for password security. This tool is better suited for data integrity checks and learning purposes.

No, all hash generation happens entirely in your browser. Your text is never sent to any server or stored anywhere. Hashes are generated locally using JavaScript.

Hash functions are commonly used for: data integrity verification (checksums), file deduplication, blockchain and cryptocurrency, digital signatures, and verifying downloaded files. They are NOT suitable for encryption (which requires reversibility) or password storage (use specialized password hashing functions).