Electrical Calculators
Ohm's law, power conversions, voltage drop, resistors, batteries and energy costs.
Ohm's Law CalculatorVoltage, current, resistance and power from any two values.Watts to Amps CalculatorCurrent draw from power and voltage (AC and DC).Amps to Watts CalculatorPower from current and voltage (AC and DC).Electricity Cost CalculatorRunning cost of any appliance per day, month and year.Voltage Drop CalculatorVoltage drop along a cable run.kVA to Amps CalculatorCurrent from kVA for single and three phase.Horsepower to Amps CalculatorMotor current from horsepower.Resistor Colour Code CalculatorResistance from 4-band colour codes.Series & Parallel Resistor CalculatorTotal resistance of resistors in series or parallel.Battery Life CalculatorRuntime from battery capacity and load.