Privacy Policy

Last updated: 2026-10-16

Your calculator inputs

All calculations run locally in your browser. The numbers you enter are not sent to or stored on our servers. Your currency preference is saved in your browser's local storage.

Hosting and logs

Our site is hosted on Cloudflare, which may process technical data such as IP address and browser type for security and performance.

Advertising

We may use Google AdSense or similar services. These third parties may use cookies to show ads based on your visits to this and other sites. You can opt out of personalised advertising at Google Ad Settings. Where required (EEA/UK), we will ask for consent before such cookies are used.

Affiliate links

Some links may be affiliate links, clearly labelled as sponsored.

Embedded calculators

Sites embedding our calculators load our page in an iframe; calculator inputs stay in the visitor's browser unless the visitor submits a lead form.

Customer accounts

For paying customers we store the checkout email, subscription status (received from our payment provider Lemon Squeezy), registered domains and dashboard settings in Cloudflare Workers KV. Sign-in links and notifications are sent through our email provider (Resend).

Lead capture forms

On Business embeds, visitors may choose to submit their name, email, optional phone and message, plus their calculator inputs and result, to the website owner. We act as a processor for that website owner: the submission is emailed to them and stored for up to 12 months so they can export it, after which it is deleted automatically. Contact the website owner, or us, to request deletion.

Contact

Questions? See our contact page.