Cookie Policy

Your browser's local storage remembers small preferences, such as whether you dismissed a banner. The site works without it.

Google Analytics measures traffic in aggregate so we know which calculators get used and which pages are broken. We do not use it to identify you.

We show ads served by Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the Internet.

You can opt out of personalised advertising at Google Ads Settings (adssettings.google.com) or at aboutads.info/choices. Visitors in the European Economic Area, the United Kingdom and Switzerland see Google's consent message first and can accept, decline or change their choice at any time.

When you click an Amazon product link, Amazon sets a cookie so any purchase in the following window is credited to us. This does not change your price. Amazon's cookies are governed by Amazon's privacy notice.

Every major browser lets you block or delete cookies in its privacy settings. Blocking them will not break any calculator on this site. The privacy policy has more detail on the data these services collect.