Privacy

Privacy notice

This site collects as little as possible. The calculators run in your browser, and there are no cookies, tracking or adverts. Visits are counted without cookies.

Last updated November 2026.

Who runs this site

Working on UC is run by an individual in the UK. You can contact me at [email protected].

The calculators

Everything you type into a calculator stays in your browser. It isn't sent to this site or anyone else, and it isn't saved.

Cookies and tracking

This site doesn't set cookies, and it doesn't use tracking pixels or adverts.

Counting visits

To see how many people use the site, it uses Cloudflare Web Analytics. It counts things like which pages are viewed, roughly which country visits come from, and the type of device and browser. It doesn't use cookies, doesn't store anything on your device, doesn't identify you, and doesn't follow you around other websites.

Fonts and icons

The typefaces are loaded from Google Fonts. When a page loads, your browser connects to Google, which receives your IP address. Google's privacy policy explains how it handles that.

The WhatsApp and Facebook logos on the share buttons are Font Awesome icons (free licence, CC BY 4.0). They load from jsDelivr, a free public file service, which receives your IP address when they load. Nothing is loaded from WhatsApp or Facebook unless you tap one of those buttons.

Hosting

The company that hosts this site may keep short-lived technical logs, such as IP addresses and the pages requested, to keep the service running and secure.

If you email me

There's no mailing list and nothing to sign up for. If you email me, your message and email address are only used to reply to you. They're never added to a list, sold or shared, and they're deleted when they're no longer needed.

Your rights

Under UK data protection law you can ask to see the information held about you, have it corrected or deleted, or object to how it's used. Email [email protected] to do any of these.

If you're unhappy with how your information has been handled, you can complain to the Information Commissioner's Office.