Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hash values from any text input, useful for checksums, data integrity checks, and development testing.
How It Works
How Hash Generator (MD5 / SHA) Works
A hash function takes any input text and produces a fixed-length string of characters (the "hash" or "digest") that is unique to that exact input — even a single changed character produces a completely different hash, which makes hashes useful for verifying that data hasn't been altered.
MD5 produces a 32-character hash, SHA-1 produces 40 characters, SHA-256 produces 64 characters, and SHA-512 produces 128 characters — all computed entirely in your browser using the same standardized algorithms used across software and cryptography, with SHA-256 and SHA-512 computed by the browser's built-in Web Crypto API for accuracy.
This process is one-way: you cannot reverse a hash back into the original text. Hashes are used to confirm two pieces of data match (like verifying a downloaded file wasn't corrupted) without needing to compare the full original content.
Worked Example
See It In Action
Hashing the text "hello" produces: MD5 = 5d41402abc4b2a76b9719d911017c592, SHA-1 = aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d, and SHA-256 = 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824.
FAQ
Frequently Asked Questions
Is MD5 or SHA-1 safe to use for passwords?
No — both MD5 and SHA-1 are considered cryptographically broken for security-sensitive purposes like password storage, since they're vulnerable to collision attacks and can be cracked quickly with modern hardware. Use them here only for checksums or non-security identifiers, not for protecting secrets.
What is a hash commonly used for?
Common uses include verifying a downloaded file matches the original (comparing published checksums), detecting accidental data corruption, and generating consistent unique identifiers from text content.
Why do different algorithms produce different-length hashes?
Each algorithm is mathematically designed to output a specific fixed number of bits — MD5 always outputs 128 bits (32 hex characters), SHA-256 always outputs 256 bits (64 hex characters), and so on, regardless of how long or short the input text is.
