• Innovative
  • Unique natural language support
  • Built-in unit and currency converter


  • Natural language can yield surprising results
  • Can be tricky to master

At A Glance

OpalCalc is a unique calculator that lets you use natural language for day-to-day calculations.

Manufacturer’s Description

OpalCalc is a brand new type of calculator for the PC. As easy to use as Notepad or a word processor, OpalCalc allows you to insert natural language as part of the sum, along with multi-line support so you can go back and adjust your previous calculations. Want a tiny footprint on the screen for a single sum? Resize accordingly. Want it to fill the screen for heavy-duty work? OpalCalc can adapt. Featuring a lightweight footprint, on-the-fly calculation as you type, percentages, variable support, hundreds of units and functions, extensive notation support, intuitive design/documentation and much more. Once you've tried it, you'll never want to go back to your ordinary desktop (or PC) calculator again!

Manufacturer’s Website


The Specs

Requirements Microsoft .NET 3.5 Framework
Operating System Compatibility
  • Microsoft Windows 7
  • Microsoft Windows Vista
  • Microsoft Windows XP
Download Details
License Type Free
File Size 0.6 MB
Total Downloads 1339