KVA stands for kilovolt-ampere, which is a unit of measurement for apparent power in an electrical circuit. It is the product of the root mean square voltage (in volts) and the root mean square current (in amperes). KVA is dimensionally equivalent to the watt, and in SI units, 1 V⋅A = 1 W. KVA is used to analyze alternating current (AC) circuits, while in direct current (DC) circuits, the product of voltage and current is equal to the real power, measured in watts. KVA is also used to rate generators, and it is a measure of the total amount of power being used by a system, known as apparent power. The difference between KVA and KW is that KW is the actual power or working power, while KVA is the total amount of power in use in a system. The power factor is a measure of electrical efficiency, and it is expressed as a ratio or percentage between 0 and 1. The formula for converting KVA into KW is: Apparent power (KVA) x power factor (pf) = actual power (KW).