Generate Hashes Online – MD5, SHA-256, SHA-512
Hashing converts any input into a fixed-length fingerprint. The same input always produces the same hash. Any change in input — even one character — produces a completely different hash.
Which algorithm to use
- SHA-256 — default choice for file verification and checksums
- SHA-512 — when maximum security margin is needed
- MD5 — legacy only; use for non-security checksums where software requires it
- SHA-1 — broken for security; avoid for new systems
File integrity verification
Download a file → hash it → compare against the published checksum. If the hashes match, the file is unmodified. This detects corruption and tampering.
Frequently Asked Questions
Can I hash a password with this tool?
Don't hash passwords client-side for authentication — it's insecure. Use bcrypt or argon2 server-side. This tool is for file checksums and data fingerprinting.
Is my data safe to paste here?
Yes — hashing runs locally in the browser via Web Crypto API. Nothing is sent to a server.