Electrical Calculators
Free electrical calculators for KVA, watt hours, battery capacity, and horsepower to amps conversion. Standard electrical formulas with results shown instantly.
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KVA Calculator
Calculate kilovolt-amperes from volts and amps for single-phase and three-phase systems. Convert between KVA, KW, and amps.
Watt Hour Calculator
Calculate watt hours from watts and hours. Convert to kilowatt hours (kWh) and estimate electricity cost for any appliance or device.
Battery Calculator
Calculate battery capacity, runtime, and charging time. Enter battery capacity (Ah), load (watts), and voltage for instant results.
HP to Amps Calculator
Convert horsepower to amps for single-phase and three-phase motors. Includes standard motor efficiency and power factor values.