Last updated: 1 November 2026
Your answers
Everything you type into a calculator stays on your device. Nothing is sent to us. To save you typing it again, your last answers are kept in your browser on that device only. Press Start again to clear them.
If you enter your dog’s name, birthday, breed or weight, we keep those on your device too, so our other calculators can fill themselves in. Press Not [your dog]? on any calculator to clear them.
If you use Send this to your family, the link contains your answers, so only send it to people you’re happy to share them with.
Analytics
We count visits with GoatCounter. It doesn’t use cookies or identifies you. We also count simple actions, such as “a calculator was used”, so we know which pages help. We never send what you type or your results.
Advertising
We don’t show adverts at the moment. If we add them, we’ll update this page first and ask before any advertising cookies are set.
Links to other sites
Some links go to partners, and we may be paid if you use them. This never changes our calculations.