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File Checksum Calculator
Calculate a SHA file checksum and compare it with an expected hash.
Your results will appear here.
Three steps. That’s it.
A useful toolkit for text, data, images and calculations.
- 01
Add your input
Choose a tool, enter values or select a file.
- 02
Make it yours
Adjust the options and run the action.
- 03
Take the result
Copy the result or download its file.
File hash calculator online
Compare a local file checksum with a trusted reference. A matching hash is useful only when the expected checksum comes from a trustworthy source.
How to use it
Choose a local file using the file selector. Review Algorithm, Expected checksum (optional). Select Run tool and inspect the result before copying or downloading.
Options and example settings
Worked examples
Compare a local file checksum with a trusted reference.
Local file workflow — File Checksum Calculator
Settings: Algorithm: SHA-256; Expected checksum (optional): (empty)
Input:
Use the downloadable sample file below.
The checksum shown is for the bundled UTF-8 sample text file, including its final newline. A different file should produce a different checksum.
Output:
SHA-256: 645a2b496282c577dccc00efcb89b39781a89f284dd0070704840c6d985914db
Limitations and common mistakes
- A matching hash is useful only when the expected checksum comes from a trustworthy source.
- Keep the original file and verify the exported result before replacing it. Browser memory limits can affect large files.
Frequently asked questions
How can I compute a file checksum online?
Choose a local file using the file selector. Review Algorithm, Expected checksum (optional). Select Run tool and inspect the result before copying or downloading.
Where is my input processed?
The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.
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