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Privacy

Short version: we measure how the site is used, and we never ask for or collect your name, phone or email unless you write to us.

The calculators

The calculators run in your browser. The numbers you enter are sent to Google Analytics as described below, without anything that identifies you.

Google Analytics

We use Google Analytics to understand how the site is used. It sets cookies and records, for example, the pages you open, the buttons and links you tap, the questions you open, and the numbers you enter in a calculator (units and meter readings) with the bill they produce. It also records your approximate location, device and how you reached us. We use this to improve the pages. It does not tell us your name, phone number or email, and we do not send those to Google. You can block it with your browser privacy settings or an ad blocker; the calculators keep working.

Cloudflare Web Analytics

Our host, Cloudflare, also counts visits with its Web Analytics, which sets no cookies and does not identify you.

Advertising

The site shows no ads and runs no advertising trackers.

Links you share

A link you share from a calculator carries only the number of units in the address, nothing about you.

Hosting

The site is served through Cloudflare, which handles your connection (including your IP address) to deliver and protect the site.

Email

If you write to [email protected], we use your address only to reply, and never add it to a list.

Changes

Last updated 22 Oct 2026.