Privacy policy

Last updated 17 August 2026.

What we collect directly

Nothing that identifies you. This site has no accounts, no newsletter sign-up and no comment system. The calculators run entirely in your browser — the temperature and humidity values you enter are never sent to a server, and nothing is stored between visits.

If you email us, we hold that message in order to reply to it.

Server logs

Our hosting provider keeps standard access logs — IP address, timestamp, page requested, browser user agent — for security and troubleshooting. These are retained for a limited period and are not used to build a profile of you.

Advertising and cookies

This site is supported by advertising. Advertising partners, including Google, may set cookies or use similar technologies to serve ads and measure their performance. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this and other sites.

You can opt out of personalised advertising in Google Ads Settings, or opt out of third-party vendor cookies at aboutads.info. Where required by law, you will be asked for consent before non-essential cookies are set, and you can change that choice at any time.

Analytics

We may use privacy-respecting analytics to understand which pages are useful. Any such data is aggregated and does not identify individual visitors.

Your rights

If you are in the EU, UK or a US state with comparable legislation, you have rights of access, correction and deletion in respect of personal data we hold about you. Since we hold almost none, this is usually a short conversation — but you are welcome to ask via the contact page.

Children

This site is not directed at children under 13 and we do not knowingly collect data from them.

Changes

If this policy changes materially, the date at the top of this page changes with it.