Voltage Drop
DC, single- or three-phase; size, drop, or max length — work shown.
OpenCalculators
Field calculations, done properly. No account. Nothing uploaded — everything runs in your browser.
Ohm's Law
Any two of volts, amps, ohms, watts → all four.
OpenPower
Watts, volts, amps, and power factor — single- or three-phase.
OpenPower Triangle
kW, kVA, kVAR, and power factor from any two.
OpenPower Factor Correction
Capacitor kVAR to reach a target power factor.
OpenConductor Size Conversions
AWG / kcmil ↔ circular mils ↔ mm² ↔ diameter.
OpenConduit Bend Total
Sum the bends between pull points against 360° or a 270° spec.
Open