Checksum Calculator
Enter text and get MD5 and SHA-256 hashes. Uses Web Crypto API where available. No server.
Hash text
How it works
We use crypto.subtle.digest for SHA-256. For MD5 we use a small in-browser implementation (not crypto.subtle).
When to use it
Use for checksums, integrity, or comparing with known hashes.
Frequently asked questions
MD5 secure?
No. Use SHA-256 for security. MD5 is for checksums only.