Skip to content
Electrical Calculators

kVA to kW Calculator

Verified formula Updated Jun 2026 Private — runs on your device

Enter details
kVA
Verified formula Private

Real power

80.00

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the kVA to kW Calculator

The kVA to kW Calculator works out your real power in an instant. Enter apparent power and power factor and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the apparent power.
  2. Enter the power factor.
  3. Read off your real power — the calculator updates automatically, with no button to press.

Formula

The kVA to kW Calculator uses the formula:

Real power = Apparent power × Power factor

Worked example

For example, with apparent power of 100 kVA and power factor of 0.8, the real power is 80.00.

Inputs used
Apparent power 100 kVA
Power factor 0.8
Results
Real power 80.00

Results are estimates for educational use, not professional advice.

Frequently asked questions

Multiply the kVA by the power factor. A 100 kVA supply at a 0.8 power factor delivers 80 kW of real power.

It is the ratio of real power to apparent power, between 0 and 1. It reflects how effectively current is converted into useful work.

kVA is apparent power, the total the supply must provide; kW is real power, the part that does useful work. They are equal only at a power factor of 1.

Generators are rated in kVA because they must supply the full apparent power. Your usable kW depends on the load's power factor.

The kVA to kW Calculator uses the formula: Real power = Apparent power × Power factor. For example, with apparent power of 100 kVA and power factor of 0.8, the real power is 80.00.

Enter the apparent power. Enter the power factor. Read off your real power — the calculator updates automatically, with no button to press.

Related calculators