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
| 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 |
