Hash Calculator (SHA-256 / MD5)
Free hash calculator (SHA-256, MD5). Computed locally with Web Crypto — nothing leaves your device.
100% runs in your browser — no upload, no trackingHow to use
Type or paste text, then click Hash for SHA-256 or MD5. All hashing happens locally.
Example
input: hello\nsha256: 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
FAQ
Is my data uploaded to a server?
No. Every tool runs entirely in your browser. Your input never leaves your device.
Is this tool free?
Yes, all DevToolbox tools are free to use with no account required.
Does it work on mobile?
Yes, the interface is mobile-friendly and responsive.
How accurate is the conversion?
We use standard, well-tested algorithms (Web Crypto, Intl, DOMParser). Results match common reference tools.