Your numbers stay with you.

Calculator inputs

Values are processed in your browser. We do not send calculator inputs to a server, save them to an account, or store them in cookies or local storage. Reloading a page resets the calculator.

Copy, download and print

When you choose Copy, the result is written to your device clipboard. Download creates a CSV on your device. Print opens your browser print dialog. The site does not send your plan to other people.

Website access

This version includes no advertising scripts, analytics trackers, accounts or payment collection. Cloudflare hosts the site and may process connection data such as IP addresses for delivery and security. See Cloudflare’s privacy policy.

If advertising or analytics is added later, this notice will be updated to reflect the actual services before they are enabled.