What is a hash?
A hash function maps input text to a fixed-size digest. It is used for checksums, file integrity and many security protocols.
How to use it
1. Type or paste text into the input box.
2. MD5, SHA-1, SHA-256 and SHA-512 are computed instantly.
3. Copy the digest you need.
Tips
- MD5 and SHA-1 are fast but cryptographically broken; use them only for checksums.
- SHA-256 and SHA-512 are modern, secure choices.
- Never store passwords with plain MD5 or SHA-1; use bcrypt, scrypt or Argon2.
Privacy
Hashes are computed with the Web Crypto API entirely in your browser.