About This Launch
BuildWire Calc offers 36 field calculators for wire sizing, voltage drop, conduit fill, loads and motors. They run free in the browser with no account, and iOS, Android and Mac apps work offline.
Why I Built This
Electricians needed simple, free NEC calculators in the browser, so BuildWire Calc puts the common field math in one place.
Launch Details
CategoryProductivity
StageLive
ListedNovember 8, 2026