Privacy Policy

Your numbers are calculated in your browser and are not stored by us.

Short version: the calculators run in your browser and we do not collect what you type.

Calculations stay in your browser

Every calculation is done by JavaScript on your device. Inputs are not posted to our server, stored in a database or linked to an account. There is no database and there are no accounts.

Links that contain your inputs

To let you share a result, the page writes your inputs into the address bar as a query string (for example ?ae=600&ap=4). Nothing is sent when you change a value. If you copy that link and someone opens it, their browser requests the page from our server like any other URL, so the query string is part of that request. We do not use it for anything, but web servers commonly keep standard access logs, so a shared link may appear in those logs.

Cookies and tracking

This site uses Google Analytics to count visits and measure which pages are useful. These Google services may set cookies or similar identifiers in your browser and receive technical data such as your IP address, browser, device and the pages you view. What you type into a calculator is never sent to them.

You can block these tags with your browser settings, a content blocker or the Do Not Track setting, which this site honours. See how Google uses data from sites that use its services.

Your theme choice

The day and night switch saves your choice (light or dark) in your browser's local storage so the next page loads in the same mode. It is stored only on your device, never sent to us, and you can clear it from your browser settings. Without a saved choice the site follows your device's light or dark setting.

Server logs

Our web host may record technical data such as IP address, requested URL, date and browser type in access logs for security and operations. We do not combine these logs with any other data.

Contact

Questions about this policy can be sent through the contact page.

Last updated: 19 October 2026.