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Electrical basics calculators

The everyday formulas behind every other calculator on the site: Ohm's law and converting between watts, amps and volts for DC and AC.

Ohm's law calculatorEnter any two of volts, amps, ohms or watts to find the rest.Watts to amps calculatorConvert watts to amps for DC, single-phase or three-phase AC.Amps to watts calculatorConvert amps to watts for DC, single-phase or three-phase AC.LED resistor calculatorSeries resistor value and wattage for LEDs on 12 V or 24 V.kVA to kW and amps calculatorConvert kVA, kW and kVAR, and find the current for single or three phase.Energy unit converterConvert kWh, Wh, joules, BTU, kcal and therms.

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