Privacy policy

Short version: calculators run in your browser, we don't ask for your name or email, and we don't sell personal information.

What you enter

Numbers you type into calculators and ZIP codes or counties you look up stay in your browser. The lookup downloads static public data files; your search isn't sent to us. Some settings may be saved in your browser's local storage, which you can clear at any time.

Server logs

Our hosting provider (Cloudflare) processes standard technical data such as IP address, browser type and pages requested to deliver and secure the site.

Analytics

We use Cloudflare Web Analytics, a privacy-first service that doesn't use cookies or local storage and doesn't track you across sites. It counts page views and performance in aggregate. We don't use Google Analytics or any other analytics.

Advertising and cookies

Today the site shows no ads and no affiliate links and sets no advertising cookies. The rest of this section describes what will apply if we add them, and we'll update this page before we do.

We plan to show ads (for example through Google AdSense). Ad partners, including Google, may use cookies or similar technology to show ads based on your visits to this and other sites. You can opt out of personalized Google ads at Google Ads Settings or at aboutads.info. Where the law requires it (for example in the EU, UK or some U.S. states), we'll ask for consent before non-essential cookies are used. Learn how Google uses data from partner sites.

Affiliate links

There are no affiliate links yet. If we add them and you click one, the retailer may set its own cookie to credit the referral. Their privacy policy applies on their site.

Children

The site isn't directed at children under 13, and we don't knowingly collect their information.

Your choices and contact

You can block or delete cookies in your browser. For privacy questions, email [email protected] or see our contact page.

Last updated October 21, 2026.