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Watts to Kilowatts Converter

Convert watts (W) to kilowatts (kW), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter a power, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
0.001 kW
microwatts
1,000,000 µW
milliwatts
1,000 mW
megawatts
1 × 10⁻⁶ MW
gigawatts
1 × 10⁻⁹ GW
horsepower (mechanical, 550 ft·lbf/s)
0.0013410220896 hp
metric horsepower (PS)
0.0013596216173 PS
horsepower (electric)
0.00134048257373 hp(E)
BTU (IT) per hour
3.41214163313 BTU/h
kilocalories per hour
0.860420650096 kcal/h

1 W = 0.001 kW

Show the working
  1. 1 W = 0.001 kW
  2. 1 × 0.001 = 0.001 kW

How to convert watts to kilowatts

1 W = 0.001 kW, so multiply by 0.001 to go from watts to kilowatts. Going the other way, 1 kW = 1,000 W.

kW = W × 0.001
W = kW × 1,000

Worked example:

1 W = 0.001 kW
5 × 0.001 = 0.005 kW

Watts to kilowatts table

WattsKilowatts
1 W0.001 kW
2 W0.002 kW
3 W0.003 kW
4 W0.004 kW
5 W0.005 kW
6 W0.006 kW
7 W0.007 kW
8 W0.008 kW
9 W0.009 kW
10 W0.01 kW
15 W0.015 kW
20 W0.02 kW
25 W0.025 kW
30 W0.03 kW
40 W0.04 kW
50 W0.05 kW
75 W0.075 kW
100 W0.1 kW
250 W0.25 kW
500 W0.5 kW
1000 W1 kW

About the units

Watts (W)
Watts, a metric unit. Definition: BIPM SI Brochure.
Kilowatts (kW)
Kilowatts, a metric unit. Definition: BIPM SI Brochure (SI prefixes).

Formula version 0.1.0Reviewed