SHA-256 Hash Generator

Generate a SHA-256 hash from any text directly in your browser.

Algorithm

Text Input

Hash Output (SHA-256)

Compare with expected hash (optional — useful for verifying a download)

Runs entirely in your browser using the native Web Crypto API (crypto.subtle) — your text/file is never uploaded to a server. Requires a secure context (HTTPS or localhost); it won't work over plain HTTP. MD5 isn't offered since modern browsers don't expose it through Web Crypto (and it's cryptographically broken for security purposes anyway) — SHA-256 or higher is recommended.

Frequently Asked Questions

This tool uses the browser's native Web Crypto API, which doesn't expose MD5 (it's considered cryptographically broken). SHA-1, SHA-256, SHA-384, and SHA-512 are available instead.

No — the Web Crypto API requires a secure context (HTTPS or localhost), so it won't function over plain HTTP.

Yes — use the Upload File button, and the hash will be computed from the file's contents.