Cookie policy

Last updated 9 July 2026.

A cookie is a small file a website can store in your browser. This site aims to use as few as possible.

Essential

We use your browser's local storage only to remember your cookie choice, and nothing else that identifies you.

Analytics and advertising

If the operator enables analytics or advertising, those services may set cookies to measure traffic or show relevant ads. When they are active, a notice lets you accept or decline. If they are not active, this site sets no tracking cookies at all.

Managing cookies

You can clear or block cookies in your browser settings at any time. Doing so will not stop the calculator working.