File Hash

Computes the SHA hash (checksum) of a file.

File Hash computes the cryptographic checksum of a file directly in your browser, supporting SHA-1, SHA-256, SHA-384, and SHA-512. It's useful for verifying file integrity, confirming a download matches a published hash, or generating a fingerprint to detect whether two files are identical.

Common uses

• Verify a downloaded file against a published SHA-256 checksum to confirm it wasn't corrupted or tampered with
• Generate a SHA-512 fingerprint of a build artifact or release to share alongside it
• Compare hashes of two files to check whether their contents are byte-for-byte identical
• Produce a SHA-1 checksum when working with legacy systems or tooling that still expects it
• Create a content fingerprint for caching, deduplication, or change detection

FAQ

Is my file sent to a server?

No. Hashing runs entirely in your browser using the built-in Web Crypto API, and the file never leaves your device or gets uploaded anywhere.

Which hash algorithms are supported?

SHA-1, SHA-256, SHA-384, and SHA-512. If an unrecognized algorithm is requested, it falls back to SHA-256.

What format is the output hash in?

The digest is returned as a lowercase hexadecimal string, with each byte rendered as two zero-padded hex characters.

Why isn't MD5 available?

The tool relies on the browser's native Web Crypto API, which only provides SHA-1, SHA-256, SHA-384, and SHA-512. MD5 is not part of that API and is not offered.

Does the same file always produce the same hash?

Yes. A given file and algorithm always produce the same hash, so you can reliably compare a computed value against a known checksum.

Related tools

• Adler-32 Checksum
• AES Encrypt / Decrypt
• Argon2 Hash
• Bcrypt Hash / Verify
• CRC32 Checksum
• Hash (SHA)
• Hash Identifier
• HMAC Generator