What is a hash used for?

To check that a file or text hasn't changed. Even a tiny change gives a completely different hash.

No. Hashes are calculated in your browser. Your file never leaves your device.

Is MD5 safe for passwords?

No. MD5 and SHA-1 are fine for checksums but too weak for security. Use SHA-256 or better.

Developer

MD5, SHA-1, SHA-256 and SHA-512 hashes of text or files.

Compare with a checksum (optional)

How to use

FAQ

What is a hash used for?: To check that a file or text hasn't changed. Even a tiny change gives a completely different hash.
Is my file uploaded?: No. Hashes are calculated in your browser. Your file never leaves your device.
Is MD5 safe for passwords?: No. MD5 and SHA-1 are fine for checksums but too weak for security. Use SHA-256 or better.