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OpalCalc 1.90

Powerful, effective and reliable calculator for PC

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OpalCalc screenshotOpalCalc is a fresh and powerful calculator designed for Windows computers. The application is extremely easy to use and enables you to introduce natural language as element of the sum and lets you easily go back and adapt your calculations. Multi-line support is provided, too.

OpalCalc ensures a small footprint on your computer screen for only one sum and allows you to resize the program's window to suit your needs. You can also use the application in the full-screen mode if you need to perform complex calculations.

Due to its small footprint, capability to support percentages and variables, extensive notation support, ability to perform on-the-fly calculations as you type, and many other features, the application is an ideal solution for your mathematical calculations. The program also comes with an intuitive user interface and detailed documentation.


  • It's flexible, reliable and provides a natural look.
  • Allows you to perform long and complex calculations.


  • The application can be difficult to use for beginners.
  • The natural language can offer surprising results in some situations.
Name OpalCalc
Version 1.90
Developer | see all products from this developer
Product Homepage OpalCalc
License Free (Freeware)
Last Week Downloads 13
All Time Downloads 2,382
Filename OpalCalcSetup.exe
Filesize 0.6MB
MD5 Checksum 8C382E091A09B81F162AD1975D909428
OS Support Windows All
Category Home & Education

100% CLEAN Certification

BadgeOpalCalc has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
OpalCalc 1.90 November 18, 2018 - Latest Version
OpalCalc 1.85 June 16, 2016
OpalCalc 1.84 June 07, 2016
OpalCalc 1.81 February 26, 2016
OpalCalc 1.80 February 18, 2016

Download the free OpalCalc