File Checksum Verifier
Hash a locally chosen file with SHA-256 and compare it to an expected hash.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
File Checksum Verifier
How to use this tool
- Enter your values in the fields above.
- Press Generate to see the result.
- Use Load sample to try the worked example, Copy result to copy it, or Clear to start again.
Worked example
Comparing the known SHA-256 of an empty file with itself reports a match.
What this tool does not do / Limits
This tool hashes a locally chosen file in your browser with SHA-256 and compares it to the hash you type. Nothing is uploaded, and a match only proves the file matches that hash, not that its source is trustworthy.
Frequently asked questions
Does it upload my file?
No. Hashing happens in your browser and the file never leaves your device.
What does a mismatch mean?
The file differs from the one the expected hash was made from, or the expected hash was typed wrong.
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