About Hash Generator
Generate cryptographic hashes from any text. Hashes are one-way functions that convert data into a fixed-size string of characters, commonly used for data integrity verification and password storage.
Supported Hash Algorithms
- MD5 - Fast but insecure. Use only for non-cryptographic purposes like file checksums.
- SHA-1 - Deprecated for security. Maintained for legacy compatibility.
- SHA-256 - Industry standard. Recommended for most applications including password hashing and digital signatures.
- SHA-512 - Highest security level. Ideal for highly sensitive data and long-term security needs.
Common Use Cases
- Password hashing and verification
- File integrity checking (checksums)
- Digital signatures
- Data deduplication
- Blockchain and cryptocurrency
- API authentication tokens
- Comparing files without transferring them
Hash Properties
- Deterministic - Same input always produces same hash
- One-way - Cannot reverse a hash to get original data
- Fixed size - Output is always the same length
- Avalanche effect - Small input change = completely different hash
- Collision resistant - Hard to find two inputs with same hash
Security Warning:- Never use MD5 or SHA-1 for password storage or security purposes
- Always use salt when hashing passwords (use bcrypt, Argon2, or PBKDF2)
- This tool runs entirely in your browser - your data never leaves your device
- Hashing is NOT encryption - you cannot decrypt a hash
Tip: Use SHA-256 for general purposes. Use SHA-512 when maximum security is required. Avoid MD5 and SHA-1 for new projects.