Privacy

How the calculators work

The calculators run in your browser. This site does not create an account, does not send calculator inputs to our server, and does not run adverts, email capture or affiliate tracking.

The site uses Cloudflare Web Analytics to understand basic page traffic without advertising cookies or personal calculator profiles. Calculator inputs stay on your device unless you choose to share a generated URL.

Some values may be saved in this browser so the calculators can remember recent inputs. Use the footer button labelled “Clear saved data” to remove those saved values from this device.