TrueOhm vs Codewire

TrueOhm is a fast, free electrical calculator built for electricians, apprentices, and engineers. Five powerful calculators in one app: • Ohm's Law Wheel — Enter any two of voltage, current, resistance, or power and instantly solve the other two. • AC Power — Calculate real power, apparent power, current, and voltage for single-phase and three-phase systems. • Power Triangle — Solve the relationship between kW, kVAR, kVA, power factor, and phase angle. • Energy Cost — Estimate energy consumption and cost for any load over any run time. • Efficiency — Calculate motor or system efficiency from input and output power. Every calculation shows its work — tap "How this was calculated" to see the exact formulas and substitutions used. Built-in sanity checks warn you about impossible values without blocking your workflow. Designed for the field. No ads. No subscriptions. Just fast, accurate calculations from 509 Electric.

Codewire is the fast, offline calculator set built for electricians and apprentices. No ads, no signup, no subscription. Every calculator runs on your phone, even with no signal. WHAT'S INSIDE - Voltage Drop. Single- or three-phase, copper or aluminum, with drop %, voltage at the load, and the smallest wire that holds your target. - Wire Ampacity. Adjusted for ambient heat and bundled conductors. - Conduit Fill. EMT, rigid, and PVC, with the 53 / 31 / 40% limits applied. - Conduit Bending. Offset, rolling offset, three- and four-bend saddle, 90 degree stub, and back-to-back, with per-size take-up. - Box Fill. Required volume from conductors, devices, clamps, and grounds. - Ohm's Law. Solve any two of V, I, R, and P. - Three-Phase Power and kVA to Amps. - Motor Full-Load Current by horsepower. - Unit Converter. AWG to mm2, kW to HP, F to C, ft to m, and more. THE BEND ANGLE LEVEL Turn your phone into a digital angle finder. Lay it on the conduit and read the bend angle live, hands-free, with a set-zero reference. Most apps charge for this. Codewire includes it free. SHOWS ITS WORK Every result has a tap-to-reveal with the formula and method behind it, so apprentices learn the why, not just the number. BUILT RIGHT - Works 100% offline. - No ads, ever. - No account, no tracking. Saved calculations stay on your device. - Clean, fast input designed for the field. FREE, NO ACCOUNT NEEDED - Voltage drop, wire ampacity, Ohm’s law, and conduit fill. CODEWIRE PRO (one-time in-app purchase) A single purchase unlocks the advanced tools: three-phase power, kVA to amps, motor FLC, conduit bending, box fill, the bend-angle level, saved calculations, and the full NEC reference tables. No subscription. Codewire is a reference tool. Always verify results against the code edition adopted by your jurisdiction and your AHJ. It is not a substitute for a licensed electrician.