Privacy policy

Calculators and tools

Calculators and tools run entirely in your browser. Nothing you type in them is stored or sent to us or anyone else.

Forms

If you join the Small Letter or send a message, we get your email (and anything you write). We use it only to reply or send the newsletter. Unsubscribe any time by replying "stop." We don't sell or share it.

Ads and cookies

Guide pages use Google AdSense, which may set cookies to show and measure ads. See how Google uses data. The site remembers your light/dark choice in your own browser.

Hosting

The site is hosted on Netlify, which keeps standard server logs.

Questions

Use the contact form.