Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text. All processing happens in your browser.
Frequently Asked Questions
What is a hash function?
A hash function takes an input (or "message") and returns a fixed-size string of bytes. The output (hash) is deterministic — the same input always produces the same hash. Hash functions are one-way: you cannot reverse a hash to get the original input.
Which hash algorithm should I use?
For security purposes, use SHA-256 or SHA-512. MD5 and SHA-1 are considered cryptographically broken and should not be used for security. MD5 is still commonly used for checksums and data integrity verification where security is not a concern.
Is MD5 still safe to use?
MD5 is NOT safe for cryptographic purposes (passwords, digital signatures). It is vulnerable to collision attacks. However, MD5 is still widely used for non-security purposes like file checksums, cache keys, and data deduplication.
Can I reverse a hash?
No. Hash functions are designed to be one-way. You cannot mathematically reverse a hash to get the original input. "Hash cracking" works by trying many inputs until one matches, not by reversing the hash function.