Apparent Power Converter
Convert apparent electrical power units.
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In alternating current (AC) circuits, there are three types of power that interact with each other and create the so-called power triangle:
- Very attentive (S) – expressed in volt-amperes (VA / kVA). It is the total power drawn from the power source, constituting the geometric sum of active and reactive power.
- Active power (P) – expressed in watts (W / kW). This is the actual useful power converted into mechanical, light or heat work in the receiver.
- Reactive power (Q) – expressed in terms (VAR / kVAR). It is responsible for the creation of an electromagnetic field in inductive devices (e.g. motors, transformers) and capacitive ones. It does not perform active work, but circulates in the network.
The relationship between active power and apparent power is expressed by the power factor cos f:
P (Moc czynna) = S (Moc pozorna) × cos φ
The value of cos f is in the range from 0 to 1. The closer the coefficient is to unity, the greater part of the supplied apparent power is converted into useful work (active power).
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VA, kVA, MVA apparent power converter - a practical online calculator for electricians and engineers
Apparent power is one of the key parameters in the energy industry and electrical installations. Our apparent power converter allows you to quickly convert values between VA, kVA, MVA and other units, without manual counting and the risk of mistakes. Perfect for designers, service technicians, students and anyone who works with power supplies, transformers and three-phase devices.
What is apparent power (VA) and why is it important?
Apparent powerSis a quantity used in alternating current (AC) that combines active and reactive power. The unit of apparent power isvolt-ampere (VA), and in larger systems its multiples are used: kVA and MVA.
- Apparent power (S)– expressed in VA, kVA, MVA;
- Active power (P)– actually converted into work, heat, motion, expressed in W, kW, MW;
- Reactive power (Q)– related to magnetic and electric fields, expressed in var, kvar, Mvar.
In AC systems, there is a phase shift between current and voltage, so W or kW alone is not enough. Devices such as transformers, UPSs and generators are always marked withapparent power (kVA), because it determines how much load can be safely connected to them.
How our VA, kVA, MVA apparent power converter works
The converter uses simple conversions between multiples of units - but performs them for you automatically. Just enter a number in a known unit and the tool will immediately show conversions in other formats.
Step by step: how to use the tool
- Enter the apparent power value
Enter a known value (e.g. 1200, 15, 0.8) in the number field - it can be VA, kVA or MVA. - Select Input Unit
From the drop-down list, select whether the specified value is in VA, kVA, MVA, or other supported unit. - Read the conversion results
The converter will automatically convert the value into other units and show the ready numbers, without additional clicks. - Customize Output Units
In each row, you can change the target unit (e.g. from kVA to MVA) to more quickly match the output to your project or documentation requirements.
Basic apparent power conversions
To better understand what is happening "under the hood" of the calculator, it is worth knowing a few basic relationships between the units:
- 1 kVA = 1000 VA
- 1 MVA = 1000 kVA = 1,000,000 VA
- 1 VA = 0.001 kVA
- 1 kVA = 0.001 MVA
Our apparent power converter uses exactly these relationships, but automates multiplication and division to avoid mistakes (especially with large numbers).
Apparent power vs active and reactive power - a short reminder
In alternating current systems we have three interconnected quantities:
- Active power P [kW]- this is the one you actually pay for on your energy bill; performs work (drives engines, heats, illuminates).
- Reactive power Q [kvar]