Power Converter

Convert between watts and other practical power units.

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Related Conversions
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Reverse Conversions
1 kW to W 2 kW to W 5 kW to W 10 kW to W 25 kW to W 50 kW to W 75 kW to W 750 kW to W 1,000 kW to W 3,600,000 kW to W 8,000,000 kW to W 40,000,000 kW to W
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1 BTU/h to W 10 MW to kW 50 kW to hp 100 W to BTU/h 200 hp to kW 250 hp to kW 500 kW to hp 1,200 W to BTU/h 3,000 hp to kW 4,000 hp to kW 5,000 BTU/h to W 10,000 BTU/h to kW

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Common Benchmarks

E-bike motor 500 W
Microwave 1000 W
Phone fast charge 30 W
Electric kettle 1500 W
Car engine 100 hp
Hair dryer 1800 W

Formula

kW = W × 0.001

Example

Example: convert 4000000 watts to kilowatts.

4000000 W = 4000 kW

Conversion table

watts (W) kilowatts (kW)
1 W 0.001 kW
2 W 0.002 kW
5 W 0.005 kW
10 W 0.01 kW
20 W 0.02 kW
50 W 0.05 kW
100 W 0.1 kW

Explanation

These are both units.

How to convert watts to kilowatts

  1. Start with the value in watts (W).
  2. Multiply it by 0.001.
  3. The result is the measurement in kilowatts (kW).

Example: 4000000 W → 4000 kW

Frequently Asked Questions

How much is 4000000 watts in kilowatts?

4000000 watts equals 4000 kilowatts.

How many kilowatts is 1 watt?

1 watt equals 0.001 kilowatts.

How many watts is 1 kilowatt?

1 kilowatt equals 1000 watts.

What is the difference between watts and kilowatts?

Both measure power, but they are commonly used in different contexts. The watt (W) is the SI unit and is widely used in electrical/device specs, while horsepower (hp) is a traditional unit often used to describe engines and machinery.

Where are watts and kilowatts used?

Watts are common in electrical power/consumption (devices, appliances, lighting). Horsepower is commonly used for mechanical power (engines, pumps, compressors, machinery).

Why does 1 watt equal 0.001 kilowatts?

Because power units are defined with a fixed relationship, which determines the conversion factor.