Terms of use

Last updated 2026-10-04.

The calculators on this site are provided free, as is, for estimating and reference. They are based on published codes and standard engineering equations, but codes are amended locally and site conditions vary.

You are responsible for confirming every result against the code adopted where you work and with the authority having jurisdiction, and for having work designed and installed by qualified, licensed people where that is required. Gas and electrical work in particular can cause fire, injury or death if done wrongly.

To the extent the law allows, RoughIn is not liable for any loss arising from use of these calculators or reliance on their results.