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Last updated: January 14, 2026

kVA to kW Calculator: Convert Apparent to Real Power

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kVA to kW calculator

KVA
KW

kVA to kW Calculator

Use this free kVA to kW calculator to convert apparent power to real power by entering kVA and power factor. Ideal for electrical load calculations in single or...

Quick Intro: Convert kVA to kW

The kVA to kW calculator helps convert apparent power (kVA) into real power (kW) using the power factor (PF). Useful in electrical systems where PF affects usable energy.

Formula & Table Summary:

Known current: \( V = \frac{S}{I} \)

Known resistance: \( V = \sqrt{S \times R} \)

watts to volts tool

The VA to Voltage Calculator is a fast converter of apparent power- volt-amps (VA)- to voltage ( V ) when either current or load resistance is known. Apparent power combines both real power (watts) and reactive power (VAR) and it is essential in the AC systems. This calculator employs the simple electrical relations to calculate voltage based on VA. In the resistive loads, power, voltage and current are related bearing in mind the expression of Ohm. It can be used to vet electrical ratings, size transformers, or test the outputs of power supplies by engineers, electricians and students. Input the VA value and either current (A) or resistance ( ) and you can obtain correct voltage instantly.

electrical VA calculator

VA (S) Current (A) Resistance (Ω) Voltage (V)
100250
5005100
1002550
400100200

Frequently Asked Questions - kVA to kW Calculator:

How do I convert kVA to kW?

Multiply kVA by the power factor: kW = kVA × PF.

What is the power factor?

Power factor is the ratio of real power to apparent power, ranging from 0 to 1.

What is the kVA to kW formula?

kW = kVA × Power Factor.

What is kVA?

kVA stands for kilovolt-amps and represents apparent power.

Can this calculator be used for 3-phase systems?

Yes, if the load is balanced and PF is known.

How do I find the power factor?

It’s usually provided by equipment specs or measured using meters.

Why is kW less than kVA?

Because kW is real power, affected by the power factor.

Is this tool free to use?

Yes, it's a 100% free calculator.

What is the range of PF?

Power factor ranges from 0 (worst) to 1 (ideal).

Can I convert kW to kVA?

Yes, divide kW by PF: kVA = kW ÷ PF.

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Earth Bondhon

Earth Bondhon

Calculator Tools Project

Md. Jony Islam is a highly skilled professional with expertise in electronics, electrical, mechanical, and civil engineering, as well as finance. Specializing intransformer service and maintenance for 33/11kV substations, he ensures reliable and efficient electrical systems. His mechanical engineering skills drive innovative designs, while his financial acumen supports effective project budgeting. With a strong foundation in civil engineering, he contributes to robust infrastructure development. Md. Jony Islam's multidisciplinary approach ensures efficiency, quality, and reliability across all projects.