File Hash Checker

Calculate SHA-256, SHA-512 or SHA-1 file checksums locally to compare downloads and detect byte-level changes.

Hover over or focus a field for help. Press Escape to close.

AlgorithmFile (maximum 20 MB)

The file is read as bytes: it is not opened, executed or sent to the server. SHA-1 is provided for legacy comparisons, not for checking authenticity.

Hash

How it works

Choose a file and algorithm, then run the tool. Copy or download the checksum; Clear removes the selected file and result.

hello

Is my input sent to a server?

No. Your content is processed in this browser. It is never sent to the server or saved.

What should I know about File Hash Checker?

Maximum file size 20 MB. Compare hashes produced by the same algorithm. A checksum alone does not establish a trusted origin.