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Hash Generator

🔒 100% Local Processing
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About Hash Functions

A hash function maps data of arbitrary size to fixed-size values. Common uses include verifying data integrity, storing passwords securely, and creating unique identifiers. This tool uses the Web Crypto API, which runs entirely in your browser. Note: MD5 and SHA-1 are considered cryptographically broken and should not be used for security purposes. Use SHA-256 or SHA-512 for security-sensitive applications.

Hash Generator FAQ

What is the difference between MD5 and SHA-256?

SHA-256 (part of SHA-2 family) is cryptographically secure and produces a 256-bit hash. MD5 is 128-bit and cryptographically broken — do not use it for security. SHA-256 is the recommended standard.

Is SHA-1 still safe to use?

No. SHA-1 has been broken since 2017 and should not be used for security purposes. Always use SHA-256 or SHA-512 for password hashing, file integrity, and digital signatures.

Can a hash be reversed?

No. Cryptographic hashes are one-way functions. You cannot "decode" a hash back to its original input. For password verification, hash the input and compare hashes — never decrypt or reverse a hash.

What is salting and why is it important?

Salting adds random data to each input before hashing so identical inputs produce different hashes. This prevents rainbow table attacks. Our tool generates raw hashes — add your own salt for production use.