Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text input.
A hash function turns any text into a fixed-length fingerprint that's practically impossible to reverse. This tool generates MD5, SHA-1, SHA-256, and SHA-512 hashes from your input at once — useful for verifying file integrity, comparing values, or generating checksums. Hashing happens locally in your browser, so your input never leaves the page.
Frequently asked questions
What is a hash?
A one-way function that maps input of any size to a fixed-length string. The same input always yields the same hash; a tiny change produces a completely different one.
Is hashing the same as encryption?
No. Encryption is reversible with a key; hashing is one-way and can’t be decoded back to the original.
Which algorithm should I use?
Use SHA-256 or SHA-512 for security. MD5 and SHA-1 are broken for security purposes but still handy for quick, non-security checksums.
Why are MD5 and SHA-1 insecure?
Practical collision attacks exist, meaning two different inputs can be forced to share a hash, so they must not be used for signatures or passwords.
Can I recover the original text from a hash?
No. Hashes are irreversible; the only route back is to guess inputs and hash them until one matches.