Privacy policy
Zone 2 Heart Rate Calculator ("we", "us") is published by Autonex Pte Ltd, Singapore. We collect as little information as possible.
1. The calculator
All calculations run in your web browser. The age and heart rate values you enter are not sent to our servers or stored by us. They may appear in the page address so you can bookmark or share a result — share such links only with people you are happy to see those values.
2. No accounts
There is no sign-up or login, and we do not ask for your name or contact details.
3. Advertising and cookies
We may show advertising served by Google AdSense. Google and its partners use cookies to serve ads based on your previous visits to this and other websites. You can opt out of personalised advertising at Google Ads Settings and learn more at How Google uses information from sites that use its services. Where required by law, we will ask for consent before personalised ads are shown.
4. Hosting and fonts
The site is hosted by Hostinger, which processes basic request data such as IP addresses to deliver pages and keep the service secure. Fonts are served by Google Fonts.
5. Email
If you email us, we use your message and address only to reply.