Free File Hash Checker (MD5, SHA-1, SHA-256)
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About the File Hash Checker
Generate MD5, SHA-1 and SHA-256 checksums for any file and verify it against a known hash — computed instantly in your browser, nothing is uploaded.
How to use the File Hash Checker
- 1Drop in any file — it never leaves your device.
- 2Its MD5, SHA-1 and SHA-256 hashes appear instantly.
- 3Optionally paste a hash you were given to check it matches.
Frequently asked questions
Is this file hash checker free?
Yes — completely free with no sign-up and no file size limit beyond your browser's memory.
Is my file uploaded anywhere?
No. Every hash is computed locally in your browser using Web Crypto (for SHA-1/SHA-256) and a local MD5 implementation — the file itself is never sent anywhere.
Why would I check a file's hash?
To confirm a download wasn't corrupted or tampered with. Compare the hash shown here against the one published by the file's source (e.g. on a software download page) — if they match, the file is identical.
Which hash algorithm should I use?
Use whichever the source published. SHA-256 is the modern standard; MD5 and SHA-1 are older but still widely published for file integrity checks even though they're no longer considered cryptographically secure.
Does this work for any file type?
Yes — PDFs, images, ISOs, installers, archives, anything. The hash is computed from the file's raw bytes, regardless of type.