How to Use File Hash / Checksum Checker
Drop in any file to compute its SHA-256, SHA-1, SHA-384, SHA-512 or MD5 checksum using the browser's Web Crypto API, then paste a published checksum to verify the file is intact and untampered. The file is hashed locally and never uploaded.
Open the File Hash / Checksum Checker tool →What is File Hash / Checksum Checker?
Compute a file's SHA-256, SHA-1, SHA-512 or MD5 checksum and verify downloads. It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use File Hash / Checksum Checker
- Open the File Hash / Checksum Checker tool.
- Paste or type your input.
- Set any options provided.
- Copy the result. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
How do I verify a download?
Compute the file's checksum here, then compare it with the checksum published by the source. If they match, the file is intact and hasn't been altered.
Which algorithms are supported?
SHA-256, SHA-1, SHA-384 and SHA-512 via the browser's Web Crypto API, plus MD5. SHA-256 is the usual choice.
Is my file uploaded?
No — the file is read and hashed entirely in your browser and never leaves your device.
Ready to try it?
Open File Hash / Checksum Checker →