Privacy at Our Calculator

Calculator inputs

The current calculators perform their calculations in your browser. The application does not need to send the numbers you type into a calculator to a server in order to produce the result.

Theme preference

If you choose light or dark mode, that preference is stored locally in your browser so the site can remember your choice.

Analytics and advertising

We use Google Analytics 4 to understand aggregate use of the site, such as pages viewed, scroll activity, outbound-link clicks, browser and device information, and approximate location derived from an IP address. Google Analytics may use cookies or similar technologies for this purpose. We do not use advertising cookies or lead-generation forms, and calculator entries are not included in page-sharing URLs.

Do not enter personally identifying or sensitive information into a calculator. The site does not send calculator values to Google Analytics as part of its normal measurement. Google's handling of Analytics data is governed by its own privacy policies.

Hosting and technical requests

Your browser contacts our hosting provider to load pages, scripts, and images. These requests necessarily include technical information such as an IP address and browser headers; hosting services may keep access and security logs. Calculator inputs are processed locally and are not submitted by the application as part of these requests.

Exports and local storage

A CSV export is created in your browser and saved where you choose. Clearing this site’s browser data removes your saved theme preference. External source links take you to independently operated websites with their own privacy practices.

Sensitive information

Do not enter account numbers, Social Security numbers, passwords, or other credentials into calculator fields. The calculators do not require them.