Is the file uploaded to a server?

No. The file is read locally using the FileReader API and hashed entirely in your browser.

Which checksum should I use?

For verifying downloads, use SHA-256 or SHA-512 as they are the most widely published. MD5 and SHA-1 are included for compatibility with older systems.

File Checksum Calculator

Upload a file and calculate its MD5, SHA-1, SHA-256, and SHA-512 checksums.

Drop a file here or click to uploadAny file type — file is never uploaded

Related Tools

#MD5 Generator

Generate an MD5 hash from any text. Pure JavaScript implementation, runs client-side.

#Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes from any text.

#HMAC Generator

Generate HMAC-SHA-256/384/512 message authentication codes using a secret key.

FAQ

Is the file uploaded to a server?: No. The file is read locally using the FileReader API and hashed entirely in your browser.
Which checksum should I use?: For verifying downloads, use SHA-256 or SHA-512 as they are the most widely published. MD5 and SHA-1 are included for compatibility with older systems.

Upload any file and compute its MD5, SHA-1, SHA-256, and SHA-512 hash digests. SHA variants use the Web Crypto API; MD5 uses a pure-JavaScript implementation. Useful for verifying file integrity after downloads or comparing files without inspecting their content.