The free desktop version of our calculator is just like the online version. It features large buttons for easy mouse navigation, and a large character display that is easy to read. The calculator also includes standard keyboard entry for those who prefer non-mouse entry.

Download Free Calculator (Windows Installer)

Update: We've compiled eCalc basic calculator into a standalone .exe which allows you to run the calculator from a flash thumb drive, or right from your desktop without requiring any installation. Download Portable Calculator (Standalone exe version)

We’ve released eCalc out into the wild and appreciate all the users who have taken the time to contact us - your feedback is important. We also want to thank the many bloggers that are giving us coverage.

We’re currently working to publish some detailed documentation and videos that cover all the features of eCalc. If you’re looking for some eCalc tips and tricks, then come back and visit our blog as we’ll post some “real-world” examples of how to use eCalc in your specific discipline (engineering, physic, etc).

Thanks for your support and we hope that you find eCalc to be a great online resource.