Electrical & Installation calculators

Cable sizing, voltage drop, three-phase power and motor calculations to NEC and IEC.

Voltage Drop

Voltage drop for DC, single-phase and three-phase runs in copper or aluminium, sized in mm² or AWG, checked against IEC and NEC limits.

AWG

AWG Wire Gauge

Diameter, cross-section, resistance and current rating for any AWG size — with separate free-air and in-conduit ampacity, because they differ by a factor of two.

2 calculators in this category. Every one is free to use on ElectroCalculators, with no account required.