Ever wanted to do a sum without using a calculator? Wouldn't it be great to just type out say, 4*(3+2)/9, in any application and have it replaced by the result? InvisiCalc watches the clipboard for math expressions and calculates any that it finds for you to copy and paste the result!


  • Watches clipboard for mathematical expressions e.g: 123+456*(10-4)
  • Evaluates the string and shows result in system tray bubble.
  • User can then copy result into clipboard and paste it.
  • Simply install by copying into your startup folder.

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Additional Project Details

Intended Audience

Education, System Administrators, Developers, End Users/Desktop, Management

User Interface

Win32 (MS Windows)

Programming Language