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Amps to kVA Calculator

Convert amperes (A) to kilovolt-amperes (kVA) instantly and accurately using voltage

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How to Convert Amps to kVA

Converting amperes (A) to kilovolt-amperes (kVA) is a fundamental calculation in electrical engineering and power systems. Amperes represent electrical current, while kVA represents apparent power. The conversion requires knowledge of voltage (V). Unlike real power (kW), apparent power (kVA) does not require a power factor, making this conversion straightforward. Our free Amps to kVA conversion calculator makes this process quick and easy, providing instant and accurate results for your electrical calculations.

The conversion formula is: kVA = (A × V) / 1000, where A is the current in amperes, V is the voltage in volts, and kVA is the apparent power in kilovolt-amperes. Apparent power represents the total power in an electrical circuit, combining both real power (watts) and reactive power (VARs). This is different from real power (kW), which only accounts for the actual work being done.

This conversion is commonly used in various applications: sizing transformers and generators, calculating apparent power requirements, designing electrical distribution systems, determining circuit breaker and fuse ratings, understanding electrical load characteristics, and working with residential, commercial, and industrial electrical systems. Knowing how to convert Amps to kVA helps you make informed decisions about electrical system design, equipment selection, and power management.

Our calculator takes the amperes and voltage as inputs, automatically applies the conversion formula, and provides the result in kilovolt-amperes. The calculator handles both single-phase and three-phase calculations (for three-phase, use line-to-line voltage). Whether you're working with transformers, generators, motors, or any electrical equipment, our Amps to kVA calculator provides accurate, instant conversions.

Example:

If you have a device drawing 20 amperes at 230 volts, the apparent power in kVA would be: kVA = (20 A × 230 V) / 1000 = 4600 / 1000 = 4.6 kVA. For a device drawing 15 amperes at 120 volts: kVA = (15 A × 120 V) / 1000 = 1800 / 1000 = 1.8 kVA. For a three-phase system with 30 amperes at 400 volts line-to-line: kVA = (30 A × 400 V) / 1000 = 12000 / 1000 = 12 kVA.

Frequently Asked Questions

The formula to convert amperes (A) to kilovolt-amperes (kVA) is: kVA = (A × V) / 1000, where A is the current in amperes, V is the voltage in volts, and kVA is the apparent power in kilovolt-amperes.
Yes, voltage is required for the conversion. The apparent power (kVA) depends on both current (amps) and voltage. Common voltages include 120V, 230V, 240V, 380V, and 400V depending on your location and application.
kVA (kilovolt-amperes) represents apparent power, which is the total power in an electrical circuit. kW (kilowatts) represents real power (active power), which is the actual work being done. The relationship between them is: kW = kVA × PF, where PF is the power factor. kVA is always equal to or greater than kW.
No, power factor is not required to convert amps to kVA. The formula kVA = (A × V) / 1000 only requires current (amps) and voltage. Power factor is only needed when converting between real power (kW) and apparent power (kVA).
Yes, you can use this calculator for three-phase systems. For three-phase calculations, use the line-to-line voltage (not phase voltage). For example, for a 400V three-phase system, use 400V in the calculator.
Yes, our Amps to kVA calculator is completely free to use. No registration or payment is required. Simply enter your values (amps and voltage) and get instant, accurate results.