is specialist Quantity Surveying software which was first introduced in 1983 on Fortune Systems (For:Pro) operating system but has since been developed and ported onto a wide range of Unix and Windows platforms.

Follow the link above to download the software over the Internet and/or to view the comprehensive online manual.

E-Quantities Ltd. use the FreeBSD version of Calculix for very efficient real-time local and remote connectivity ...

If you are an existing Calculix user, please email We would like to share your thoughts on the future direction of Calculix development. In the meantime, try out the BQFilter package which will enable you to output your Calculix (edward) format bills in Excel, ConQuest or CITE format.



BQFilter is our file conversion utility. It will accept native Calculix, MS Excel or CITE (.ebq) Bills of Quantity files as input and output them in Excel, CITE (.ebq) or native ConQuest Estimating format.

It is offered for download under a freeware licence to promote the use of electronic Bills of Quantities.


QS Onscreen

QSOnscreen is our utility for measuring areas and lengths from screen images. Accuracy is comparable with many expensive digitisers and better than old style planimeters. Whether you're measuring paving or landscaping areas off drawing images or engaged in scientific planimetric analysis, you will find QSOnscreen to be a useful easy-to-use tool. If you use Calculix QS measurement, you also have the benefit of importing room data directly into it from QS Onscreen's Calculix Mode. In Cut and Fill Mode you can enter existing and finished levels onto your outlined areas then calculate earthworks and disposal volumes at the press of a button.

It is offered for download under a freeware licence.





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