Amps To kVA Calculator

Select phase:
Enter amps:
Select voltage type:
Enter volts:
Result in kilovolt-amps:

Amps (A)

Amps is the flow of electricity as an electrical current.
Specifically, it measures the number of electrons that flow past a certain point per second, so basically one Ampere is defined as the current that flows with electric charge of one Coulomb per second.

Kilovolt-amp (kVA)

The unit KVA (kilovolt amperes) is the power associated with the electric current.
1 kilo-volt-ampere is equal to 1000 volt-ampere. kVA is equal to the square root of 3 (1.732) times amps times volts, divided by 1,000.

The volt amp rating is just the Kilowatt rating determined at the unity power factor. (V.A = watts / power factor).

Learn about the conversion process of kva to amps in detail with Convert kVA To Amps

Why kVA?

By the rating of any device, we come to know exactly how much energy will it be able to supply to the load connected to it.
For example, Transformers have copper losses and iron losses.
The copper loss depends on current and iron loss depends on voltage. Neither depends on the power factor. A kVA rating is helpful in determining this loss.

Single-phase: It comes to the home with two wires: active and neutral. The neutral wire is connected to the earth (water pipe, earth stake, etc.) at the switchboard.

Three-phase: It has four wires, three actives (called phases), and one neutral. The neutral wire is earthed at the switchboard.

About Amps to kVA calculator

It is an online calculator which converts Amp and voltage to kilovolts – amp. It is a simple operating tool and requires you to enter the appropriate units in the given text fields. The calculate tab carries out the calculation once the values are entered correctly.
The first step is to select the phases it can either be single-phase or three phases. Then you have to enter the current and the voltage in the respective fields. A single click will execute the calculation and the final answer would be in kVA. Clicking on the reset tab will erase all the previous entries in order to perform new calculations.

The mathematical formulas to convert Amps to kVA are as follows:

Single-phase amps to the kVA calculation formula

S(kVA) = I(A) × V(V) / 1000
The apparent S in kilovolt-amps is equal to I in amps, times the V in volts, divided by 1000.

3 phase amps to the kVA calculation formula

Calculation with line-to-line voltage

S(kVA) = √3 × I(A) × VL-L(V) / 1000
The apparent S (power) in kilovolt-amps is equal to phase I (current) in amps, times the line-to-line RMS voltage VL-L in volts, divided by 1000.

Calculation with a line to neutral voltage

Calculation with line to neutral voltage

S(kVA) = 3 × I(A) × VL-N(V) /1000
The apparent S in kilovolt-amps is equal to phase I in amps, times the line to neutral RMS voltage VL-N in volts, divided by 1000.

Amps to kva conversion video tutorial

Amps to KVA Calculations Samples

Phase Amps (A) Line to line Volts (V) Kilovolts-Amps (KVA)
Single 120 220 26.4
Single 121 220 26.62
Single 122 220 26.84
Single 123 220 27.06
Single 124 220 27.28
Single 125 220 27.5
Single 126 220 27.94


Convert Amps to KVA

Phase Voltage Type Amps (A) Line to line Volts (V) Kilovolts-Amps (KVA)
Three Line to line 131 255 57.859
Three Line to line 132 255 58.3
Three Line to line 133 255 58.742
Three Line to line 134 255 59.184
Three Line to Neutral 135 255 103.275
Three Line to Neutral 136 255 104.04
Three Line to Neutral 137 255 104.805
Three Line to Neutral 138 255 105.57