Hash Calculator
Calculate the SHA-1, SHA-256, SHA-384, and SHA-512 hash of any file.
How to calculate file hash online and free
Upload your file
Drag and drop the file you want to calculate the hash for, or click to select it.
Calculate the hashes
Click "Calculate hash" and instantly get SHA-1, SHA-256, SHA-384 and SHA-512 values.
Copy the one you need
Use the "Copy" button next to the hash you need to paste it wherever you want.
Why calculate a file hash on PDFDocks?
A hash is like a unique fingerprint of a file: it serves to verify that a downloaded file has not been corrupted or modified by comparing it with the official hash published by its distributor. PDFDocks calculates it directly in your browser, without uploading your file to any server.
What is a hash and what is it used for?
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It's a unique sequence of characters generated from a file's content. If the file changes even by a single byte, the resulting hash is completely different — that's why it's used to verify the integrity of downloads.
Why don't you include MD5?
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MD5 has been considered cryptographically weak for years and is no longer part of standard browser encryption tools. We offer SHA-1, SHA-256, SHA-384, and SHA-512, which are much more robust and reliable.
Is it safe to calculate my file's hash here?
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Yes. Your file is never uploaded to a server: the calculation happens directly in your browser.
Is there a file size limit?
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We haven't set any artificial limits. The only real limit is your device's memory.
Security
Encrypt file
Protect any file with a password, using real AES-256 encryption.
Decrypt file
Recover an encrypted file from our tool, using your password.
Password Generator
Generate random and secure passwords with the length and characters you choose.
Check password strength
Find out how secure your password is, without it ever leaving your browser.
