Privacy & disclosure

Last updated 2026-11-12

Your data

Our calculators run entirely in your web browser. The numbers you type are not sent to us or stored on our servers. We don't require accounts and we don't collect your name, email or address.

Advertising and cookies

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Affiliate disclosure

Some links on this site go to retailers such as The Home Depot and Amazon. If you buy something after clicking one of these links, we may earn a small commission at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. These commissions help keep the calculators free.

Contact

Questions about this policy can be sent through the contact details listed on this site.