Checksums calculator v. 1.1


If you want to know more about checksums have a look here.

Sigma Informatics offers to you “Checksums calculator” an open source application that has been developed with Free Pascal compiler and Lazarus IDE. Can run on Microsoft Windows, MacOS X and Linux operating systems on both 32bit and 64bit architectures while is translated into 19 languages. It gives you the ability to calculate and verify checksums of functions: md5, sha1, sha256, sha384 and sha512.

Windows 7

The program while is running under Windows 7 64bit.

Snow Leopard

The program while is running under Snow Leopard 10.6 32bit.


The program while is running under Ubuntu 10.04 64bit.

It is very simple to use, after downloaded the zip file with the version that fits on your computer, doesn't require any installation, just unzip it to any folder of your choice. It is also suitable for using on removable media as USB sticks, CD, DVD or within a live distro.

Once you run it, select the file you want to calculate the checksum, then select the function and click the "Calculate" button. If you want to compare the result, in the field "Original checksum" give the checksum that you downloaded and click the "Compare" button.

Here you can find out detailed guidance to use the program.

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Video tutorial

Checksums Calculator video tutorial at

Watch a Checksums Calculator video tutorial done by


Plugin for "Bart's PE Builder"

We have also made a plugin for those who want to use the program in BartPE environment. You can download it here.

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For any suggestion, request, or if you want to contribute by translating the program please email us

Manolaki 9-11 C 7th Floor
Larissa 41222 Greece
Tel. & fax: +30 2410 256026

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