Horsepower to Kilovolt-Amps (kVA) Electrical Conversion Calculator

Convert horsepower (HP) to kilovolt-amps (kVA) by entering the power, motor efficiency, and power factor below.

Do you want to convert kVA to horsepower?

How to Convert Horsepower to kVA

Electrical horsepower is a measure of power equivalent to 746 watts while kilovolt-amps measure apparent power. Because power factor and motor efficiency reduce the amount of actual work performed for the amount of apparent power in the circuit, the conversion from horsepower to kVA requires a formula.

Horsepower to kVA formula

kVA = (HP × 0.746) ÷ (Efficiency × Power Factor)

kVA are equal to the horsepower times 0.746 divided by the motor efficiency times the power factor.

To convert, substitute the power, efficiency, and power factor values in the formula above and solve. A simpler alternative is to use the calculator above, which does the same thing. If the efficiency is unknown, leave it at 100% for the equation.

Follow these simple steps to use the formula.

Step One: Convert Horsepower to kW

To convert horsepower to kVA, start by multiplying it by .746. This is the power value in kilowatts.

Step Two: Find the Total Efficiency

Next, multiply the power factor by the motor efficiency to get the total efficiency. If the power factor or efficiency are in percentages, then divide by 100 to get the decimal value.

Step Three: Final Conversion

Finally, divide the kilowatts by the total efficiency to find the result in kVA.

For example, let’s convert 25 horsepower to kVA given a power factor of 80% and a motor efficiency of 84%

kVA = (25 HP × 0.746) ÷ (0.84 × 0.8)
kVA = 18.65 ÷ 0.672
kVA = 27.753 kVA

Equivalent Horsepower and kVA Ratings

Equivalent horsepower (HP) and kilovolt-amps (kVA) ratings with a power factor of 80%.
HP kVA
1 HP 0.933 kVA
2 HP 1.87 kVA
3 HP 2.8 kVA
4 HP 3.73 kVA
5 HP 4.66 kVA
6 HP 5.6 kVA
7 HP 6.53 kVA
8 HP 7.46 kVA
9 HP 8.39 kVA
10 HP 9.33 kVA
15 HP 13.99 kVA
20 HP 18.65 kVA
25 HP 23.31 kVA
30 HP 27.98 kVA
35 HP 32.64 kVA
40 HP 37.3 kVA
45 HP 41.96 kVA
50 HP 46.63 kVA
55 HP 51.29 kVA
60 HP 55.95 kVA
65 HP 60.61 kVA
70 HP 65.28 kVA
75 HP 69.94 kVA
80 HP 74.6 kVA
85 HP 79.26 kVA
90 HP 83.93 kVA
95 HP 88.59 kVA
100 HP 93.25 kVA