This web site, ie calculatorspace.com or Calculator Space does not collect private information. Inputs for calculation in this web site stay in the user's browser and are not collected by Calculator Space.
This web site uses Google Analytics to track usage statistics of web pages like how many times a web page has been visited from what countries etc. They collect visited pages, preferred language of the browser, screen resolution etc. Please see privacy policies of Google Analytics.
You might have option to opt-out from Google Analytics and/or Google Adsense. For that please see their support articles.