Affiliate & ad disclosure

Project Cost Math currently shows no ads and contains no affiliate links. Nobody pays us to include, rank or recommend any product or store.

We may add display ads or affiliate links in the future to keep the calculators free. If we do, they will be clearly labeled, this page will be updated first, and they will never change a calculation or default figure.

Project Cost Math is independent and not affiliated with any retailer, manufacturer or government agency.

Last updated October 22, 2026.