Hash Generator
Generate cryptographic hashes for passwords, data verification, and security applications.
Hash Algorithm
Input Text
Length: 0 characters
Bytes: 0 bytes
SHA256 Hash
Enter text to generate hash
About Hash Functions
What is a Hash?
A hash function is a mathematical algorithm that converts input data into a fixed-size string of characters. It's a one-way function - you can't reverse the process to get the original data.
Common Uses
- • Password storage and verification
- • Data integrity verification
- • Digital signatures
- • Blockchain and cryptocurrencies
Security Notes
Important Security Information
- • MD5 and SHA-1 are considered cryptographically broken and should not be used for security purposes
- • SHA-256 is recommended for most applications requiring good security
- • SHA-512 provides the highest security but produces longer hashes
- • Never use hashes for password storage without proper salting
Not Recommended For:
- • Password storage (use bcrypt/argon2 instead)
- • Cryptographic signatures (use proper libraries)
- • High-security applications
Good For:
- • Data integrity verification
- • File checksums
- • Non-cryptographic identification