Calculator inputs
Calculations are performed locally in your browser. The site does not submit or retain the values you enter into a calculator.
Your calculator inputs stay on your device.
This calculator experience does not require an account.
Technical operations
The website host may process basic technical information needed to deliver and secure the site. Review the hosting provider's current privacy terms for details.
Page performance monitoring
We collect browser performance measurements (LCP, INP, and CLS), the public page path without query strings, viewport-size category, a per-measurement identifier, and a server timestamp. Our collector does not store calculator inputs, IP addresses, user identifiers, referrers, or cookies. It respects the browser's Do Not Track signal. Measurements are used for site reliability, shown as rolling 28-day summaries, and removed after 90 days when collection runs. Development and production measurements are separated.
Future services
Advertising and paid personalized reports are not active. This policy requires legal review and must be updated before new services or additional categories of data collection are introduced.