File Hash & Checksum
Local ProcessingCompute SHA-256 or SHA-512 of a file, hash several files at once, or compare against an expected value.
How It Works & Processing Standards
Compute SHA-256 or SHA-512 of a file, hash several files at once, or compare against an expected value.
Tool processing runs in your browser. If you create a calculator or conversion share link, its values are included in the URL. See the privacy policy for account, analytics and advertising data.
Use it to confirm a downloaded installer is not corrupted or tampered with. Files are read in chunks inside your browser, never sent to a server, and large files do not load into memory all at once.
Password-protected files are hashed as they are. File size limits depend on the device type.
What You Can Do
- SHA-256 and SHA-512
- Hash a single file.
- Multiple files
- A table of hashes for up to 200 files, processed one at a time.
- Compare with expected
- Paste the published hash to see whether it matches. Whole sha256sum output (hash + filename) works too.
How to Use File Hash & Checksum
- 1Choose a taskSHA-256, SHA-512, multiple files or compare with expected.
- 2Select filesDrop or pick the files.
- 3Read the resultCopy the hash or see whether it matches.
Examples
Common Use Cases
- Confirming an open-source installer or ISO matches the official release
- Checking files did not change before and after a backup
- Agreeing on a hash with the recipient before sending a file
Frequently Asked Questions (FAQ)
Are my files uploaded?
No. Files are read and hashed only inside your browser and are never transmitted.
Can I paste the expected hash in upper case?
Yes. Case, surrounding spaces and filenames are ignored; only the hash part is compared.