Privacy

FreightClassCheck sets no cookies and has no accounts.

Calculators: they run in your browser. The numbers you enter stay on your device; they appear only in the page address when you copy a link to share it.
Your unit choice (inches or centimeters) is remembered in your browser's local storage.
Usage counts: when you leave a page, the page sends a small anonymous report: how long it was in view, how far it was scrolled and whether a calculator was used, never the values. It carries no identifier and is not combined with other data.
Hosting: the site is served by Cloudflare, which processes technical request data such as IP addresses to deliver and protect the site.