What we collect
This site is static. Every calculation runs inside your browser. We do not transmit, store or log the numbers you enter. We do not require accounts and we do not set tracking cookies for calculation features.
Analytics
We may use privacy-respecting analytics (page views, country, referrer) to understand which pages are useful. Analytics never receives the values typed into any calculator. We do not use Google Analytics or any tool that builds personal advertising profiles.
Cookies
Only strictly necessary cookies (if any) are set, for example to remember your selected language. No advertising cookies, no cross-site tracking.
No sale of personal data
We do not sell, rent or share personal data with third parties. There is no personal data to sell. The calculators do not collect any.
Third-party fonts
The site loads Inter and Space Grotesk from Google Fonts. Google may receive your IP address when fonts are fetched. Self-hosting fonts is on the roadmap.
Contact
The contact form sends messages through Formspree; their privacy policy applies to messages you submit. Do not include sensitive personal information in messages.
Changes
This page may be updated. Material changes will be noted at the top of the page.