Privacy policy

Last updated: October 2026.

What we collect

Nothing you type into a calculator is sent to us. All calculations run in your browser.

What your browser stores

Your chosen currency, number style, gain colour and theme are saved in your browser’s local storage so the site remembers them on this device. You can clear them at any time by clearing site data.

Share links

When you copy or share a link, your inputs are part of that link so the other person sees the same result. Only share links you are happy for others to read.

Advertising and analytics

If we add advertising or visitor statistics in future, we will update this page first and ask for consent where the law requires it.