File Hash Checker
Calculate the SHA-256, SHA-1 and SHA-512 checksum of any file to verify it hasn't been altered or corrupted. Everything runs on your device — the file is never uploaded.
Your files are never sent to our serversDrop a file here, or click to choose one
Any file type. Nothing leaves your device.
Frequently asked questions
What is SHA-256?
A cryptographic hash producing a unique 64-char fingerprint.
Why verify integrity?
To confirm a file was not corrupted or tampered with.
Which algorithms?
SHA-256, SHA-1, SHA-512.
File uploaded?
No. Processed locally via Web Crypto API.
Large files?
No practical limit, processed in chunks locally.