Privacy Policy

Effective date: October 28, 2026

Summary

The numbers you enter into our calculators are processed only in your browser. We do not ask for your name, email or account, and we do not sell personal information.

Information we collect

• Calculator inputs: processed locally in your browser and never sent to us or stored.
• Server logs: the site is hosted on Cloudflare Pages. Cloudflare may process technical data such as IP address, browser type, requested URL and time for security, abuse prevention and performance. See the Cloudflare Privacy Policy.
• Email: if you contact us, we receive your email address and message and use them only to reply.

Cookies

We do not currently set advertising or tracking cookies. Cloudflare may set strictly necessary security cookies.

Analytics

We may use privacy-focused or standard web analytics (for example, Cloudflare Web Analytics or Google Analytics) to understand which pages are useful. Analytics providers may collect device and usage data such as pages viewed, referrer and approximate location. If we add an analytics service that uses cookies, we will update this policy and, where required, ask for your consent first.

Advertising (future)

We may show ads in the future, for example through Google AdSense. If we do:

• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites.
• Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and/or other sites on the internet.
• You can opt out of personalized advertising at Google Ads Settings or www.aboutads.info.
• Visitors in the EEA, UK and Switzerland will be shown a consent banner before non-essential cookies are used.

Your rights (GDPR, UK GDPR)

If you are in the European Economic Area or the UK, you have the right to access, correct, delete, restrict or object to processing of your personal data, the right to data portability, and the right to lodge a complaint with your local data protection authority. Our legal bases are legitimate interests (security, site operation) and consent (non-essential cookies, when used).

Your rights (California: CCPA/CPRA)

California residents may request to know, delete or correct personal information we hold, and may opt out of the "sale" or "sharing" of personal information for cross-context behavioral advertising. We do not sell personal information. If we enable personalized ads, we will provide a "Do Not Sell or Share My Personal Information" option and honor Global Privacy Control signals. We will not discriminate against you for exercising these rights.

Children

This site is not directed to children under 13, and we do not knowingly collect their personal information.

Contact and changes

For privacy requests, use the address on our Contact page. We will post any changes here with a new effective date.