How to use File Checksum Calculator
- Paste the text you need to check into the input box.
- Adjust the Algorithm, Expected checksum (optional) options to match what you need.
- File Checksum Calculator updates the output automatically as you type.
- Finish by choosing Copy to take the output with you.
About this tool
There is no server behind File Checksum Calculator. File Checksum Calculator handles your input locally and returns the result instantly, with no sign-up.
Because it runs on your device, it is fast and private and works offline once loaded. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.
Frequently asked questions
What is File Checksum Calculator for?
Use File Checksum Calculator to check your input without installing anything using the Algorithm, Expected checksum (optional) controls; everything happens client-side.
Is File Checksum Calculator free to use?
Yes — File Checksum Calculator is completely free, with no usage limits.
Is my input private in File Checksum Calculator?
Yes — your input never leaves your device; File Checksum Calculator does all the work in your browser.
Does File Checksum Calculator work on mobile?
Yes — File Checksum Calculator is just a web page and runs on any modern browser, including phones and tablets.