Tools › Encoders & security › Hash Calculator
Calculate MD5, SHA-1, SHA-256 and SHA-512 hashes of a text at once. Input is treated as UTF-8.
Your input is never sent to a server — everything runs in your browser
How to use
- Type or paste the text you want to hash.
- All four hashes are calculated automatically.
- Use the Copy button next to any hash.
Which algorithm should I use?
For anything new, SHA-256 is the standard choice. MD5 and SHA-1 are broken for security purposes (collisions are practical) but are still widely used for file integrity checks and matching against legacy data. SHA hashes here are computed by the browser's built-in Web Crypto API; MD5 uses a well-established open-source implementation that self-verifies against a known test vector on page load.
FAQ
Should I hash passwords with this?
No — password storage needs a slow, salted algorithm like bcrypt or Argon2, not a fast hash. Use this tool for integrity checks and data matching.
Why does another tool give a different result for the same text?
Usually a character-encoding difference (this tool uses UTF-8) or an invisible trailing space or newline — any single-byte difference changes the hash completely.