Warning: This wind pressure calculator applies ONLY to projects using older building codes that still adopt this standard.

It’s a legacy tool in FLASH for the few who still need this calculation. It will not work on phones, tablets, or some browsers (try Explorer).
It is not scheduled for updating and exists for legacy information only


For projects using FBC 2010 or newer , or IBC 2012 or newer, please use our ASCE 7-10 calculator by clicking here.

Always double-check your permit application date to ensure you are using the right calculator.