Synthvora Growth

Free Developer Tool

File Hash Calculator

Drop a file to get its checksum, computed entirely on your device. Compare it against a published hash to verify integrity.

100% Free No signup Runs in your browser No uploads
Drop a file here, or click to choose
The file never leaves your device

SHA-256 is the standard choice for verifying downloads. SHA-1 is listed only for legacy checks and should not be used for security.

Frequently asked questions

Is my file uploaded to a server?

No. The file is read with the FileReader API and hashed with WebCrypto on your own device. It never leaves your browser.

Which algorithm should I use?

SHA-256 for general verification of downloads. SHA-512 is also fine. SHA-1 is only for matching legacy checksums and is not secure.

How do I verify a download?

Paste the checksum published by the software author into the verify box. If it matches the computed hash, the file arrived intact.

Preview

File Hash Calculator tool preview
Live preview of the File Hash Calculator tool running in your browser. Your data never leaves your device.

Related free tools