Generate SHA-256 cryptographic hashes from text or files online for free. Industry-standard hashing for security and data integrity. No signup required.
First time here? Enter text or upload a file Your input is processed locally and disappears when you close the tab.
SHA-256 is the cryptographic hashing standard behind SSL certificates, software signing, and blockchain. Our free SHA-256 Hash Generator online produces a secure 64-character digest from any text or file, computing it instantly through your browser's native Web Crypto API.
Use it to verify file downloads against a published checksum, fingerprint data, or generate hashes for scripts and CI pipelines. Beyond SHA-256, this crypto hash generator also supports SHA-384 and SHA-512, and can output each digest as hexadecimal or Base64. Switch algorithms on the fly, hash a pasted string or an uploaded file, and use the verify field to paste an expected value — the SHA-256 checksum tool confirms a match in either hex or base64. An uppercase toggle formats hex output to match whatever system you're comparing against.
All hashing happens locally through the Web Crypto API, so files and text never touch a server. As a secure hash algorithm calculator, it's a drop-in upgrade over the older MD5 Hash Generator for anything security-sensitive. Combine it with the Password Generator to create strong secrets, or the Password Strength Checker to audit existing ones.
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The SHA-256 hash generates instantly
Copy the 64-character hex digest
Use it for verification or security purposes
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