Amps to kVA Calculator

Updated July 5, 2024 kVA to Amps

To determine the apparent power in kilovolt-amps, input the phase number, current in amps, voltage in volts, and then click on the Calculate button. This will provide you with the desired result.

kVA to amps calculator ►

Formula for Converting Single-Phase Amps to kVA

The apparent power S in volt-amps is equal to current I in amps, times the voltage V in volts:

S_(kVA) = I_(A) × V_(V) / 1000

For example, let’s find the apparent power in kVA for 230-volt circuit with 50 amps of current.

S_(kVA) = 50_(A) × 230_(V) / 1000 = 11.5 kVA

Formula for Converting Three-Phase Amps to kVA

Calculation with Line to Line Voltage

The measure of apparent power, denoted by S and expressed in kilovolt-amps, is determined by multiplying the root-mean-square voltage of the line-to-line V_L-L in volts by the phase current I in amps, and then dividing the result by 1000. The square root of 3 is also involved in the calculation:

S_(kVA) = √3 × I_(A) × V_L-L(V) / 1000

For example, what is the apparent power in kVA when the phase current is 12A and the line to line RMS voltage supply is 190V?

Solution:

S_(kVA) = √3 × 20_(A) × 230_L-L(V) / 1000 = 7.967 kVA

Calculation with Line to Neutral Voltage

The value of apparent power, denoted by S, can be measured in kilovolt-amps. It is calculated by multiplying the phase current, represented as I in amperes, with the line to neutral root mean square voltage, denoted by V_L-N in volts. The resultant value is then divided by 1000, as shown below:

S_(kVA) = 3 × I_(A) × V_L-N(V) / 1000

For example, find the apparent power in kVA for 400-volt three-phase circuit with 100 amps of current.

S_(kVA) = 3 × 100_(A) × 400_L-N(V) / 1000 = 120 kVA

Amps to kVA Conversion Table

Here’s a table that shows the conversion of amps to kVA for different voltages:

Apparent Power in kVA
Apparent Power in kVA	208 V	240 V	480 V
1 kVA	2.62 A	1.31 A	1.2 A
2 kVA	5.25 A	2.62 A	2.41 A
3 kVA	7.87 A	3.94 A	3.61 A
4 kVA	10.5 A	5.25 A	4.81 A
5 kVA	13.12 A	6.56 A	6.01 A
6 kVA	15.75 A	7.87 A	7.22 A
7 kVA	18.37 A	9.19 A	8.42 A
8 kVA	20.99 A	10.5 A	9.62 A
9 kVA	23.62 A	11.81 A	10.83 A
10 kVA	26.24 A	13.12 A	12.03 A
25 kVA	65.61 A	32.8 A	30.07 A
50 kVA	131.2 A	65.61 A	60.14 A
75 kVA	196.8 A	98.41 A	90.21 A
100 kVA	262.4 A	131.2 A	120.3 A
200 kVA	524.9 A	262.4 A	240.6 A
300 kVA	787.3 A	393.6 A	360.8 A
400 kVA	1,050 A	524.9 A	481.1 A
500 kVA	1,312 A	656.1 A	601.4 A
600 kVA	1,575 A	787.3 A	721.7 A
700 kVA	1,837 A	918.5 A	842 A
800 kVA	2,099 A	1,050 A	962.3 A
900 kVA	2,362 A	1,181 A	1,083 A
1,000 kVA	2,624 A	1,312 A	1,203 A
2,000 kVA	5,249 A	2,624 A	2,406 A
3,000 kVA	7,873 A	3,936 A	3,608 A
4,000 kVA	10,497 A	5,249 A	4,811 A
5,000 kVA	13,122 A	6,561 A	6,014 A
6,000 kVA	15,746 A	7,873 A	7,217 A
7,000 kVA	18,370 A	9,185 A	8,420 A
8,000 kVA	20,995 A	10,497 A	9,623 A
9,000 kVA	23,619 A	11,809 A	10,825 A
10,000 kVA	26,243 A	13,122 A	12,028 A

Amps to kVA conversion table

Note: The values in the table are approximate and may vary slightly depending on factors such as the power factor and the efficiency of the equipment being used.