Utilities app
OhmQuill
Electrical Calc
Electrical calculators for wire size, ampacity, voltage drop, Ohm's law, conduit fill, and job takeoffs.
What OhmQuill does
An offline electrical and workshop bench for component codes, wire sizing, threads, solar sizing, and unit and material math.
Six modules: resistor and SMD code decoder with a parts bin and saved projects, wire gauge, ampacity and voltage drop, trade unit conversion with mixed-unit job rollups, tap drill and thread pitch with a fastener library, solar array, inverter and battery sizing with a payback estimate, and cost-per-unit comparison for shop supplies.