Privacy and cookies

The short version

The calculators run in your browser. What you type into them stays on your device and is not sent to us. We do not use advertising, analytics or tracking cookies, and we do not set cookies of our own.

What is loaded from other companies

• Google Fonts. The pages load fonts from Google. Your browser sends a request to Google, which includes your IP address and browser details. See Google's privacy policy.
• Cloudflare. The site is hosted and delivered by Cloudflare. As with any host, it processes requests to the site, including your IP address, to deliver pages and keep the site secure. See Cloudflare's privacy policy.

If you email us

If you write to [email protected], we use your email address and message only to reply and to fix what you reported. We do not share it. We keep emails for as long as needed to deal with them.

Search engines

We use Google Search Console and Bing Webmaster Tools to see how the site appears in search. They report on searches and clicks from their own data. They do not put tracking code on your visit to this site.

Your rights

Under UK data protection law you can ask what personal data we hold about you, and ask us to correct or delete it. Email us at the address above. You can also complain to the Information Commissioner's Office.

Changes

If we add advertising, affiliate links or analytics, we will update this page first and say so on the pages concerned.