What is a file hash used for?

A hash is a fingerprint of a file’s exact content — commonly used to verify a download matches the original (e.g. checking it against a hash the publisher posted).

Does this tool upload my file anywhere?

No — the file is read and hashed locally with the Web Crypto API, never sent to a server.

Calculate File Hash

Get the SHA-1, SHA-256 or SHA-512 hash of any file, right in your browser.

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SHA-1 SHA-256 SHA-512

Choose a file

Files never leave your device — hashing runs entirely in your browser.

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How it works

1
Choose a file

Up to 200 MB.
2
Pick an algorithm

SHA-1, SHA-256 or SHA-512.
3
Copy the hash

Computed instantly, entirely in your browser.

FAQ

What is a file hash used for?: A hash is a fingerprint of a file’s exact content — commonly used to verify a download matches the original (e.g. checking it against a hash the publisher posted).
Does this tool upload my file anywhere?: No — the file is read and hashed locally with the Web Crypto API, never sent to a server.