DIY ToolsMeasure twice

Built for the workbench

Plan the work.Build it right.

Practical calculators and an interactive electrical workspace for clearer estimates, safer layouts, and fewer mid-project surprises.

No sign-up Works on site Built for real units
Featured tool / 01Interactive
120V / Branch circuit

PANEL

SWITCH

LOAD

14/2 NM-BBox fill / liveCircuit / on

Circuit Lab

Lay out devices, run cable, test switching, and watch box fill update live.

Eight field-ready helpers

The math, already measured.

Estimate materials, check dimensions, and solve the fiddly numbers before you head to the store.