Watts to Kilowatts

Convert W to kW instantly — with a table, common power values, and a live calculator.

1 W equals 0.001 kW.

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Convert any power

Result (kW)0.001 kW

W to kW table

WkW
1 W0.001 kW
2 W0.002 kW
3 W0.003 kW
5 W0.005 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
60 W0.06 kW
75 W0.075 kW
90 W0.09 kW
100 W0.1 kW
120 W0.12 kW
150 W0.15 kW
200 W0.2 kW
250 W0.25 kW
300 W0.3 kW
400 W0.4 kW
500 W0.5 kW

kW to W (reverse)

kWW
1 kW1000 W
2 kW2000 W
3 kW3000 W
5 kW5000 W
10 kW10000 W
15 kW15000 W
20 kW20000 W
25 kW25000 W
30 kW30000 W
40 kW40000 W
50 kW50000 W
60 kW60000 W
75 kW75000 W
90 kW90000 W
100 kW100000 W
120 kW120000 W
150 kW150000 W
200 kW200000 W
250 kW250000 W
300 kW300000 W
400 kW400000 W
500 kW500000 W

Common power values

WkW
5 W0.005 kW
10 W0.01 kW
25 W0.025 kW
50 W0.05 kW
75 W0.075 kW
100 W0.1 kW
120 W0.12 kW
150 W0.15 kW
200 W0.2 kW
300 W0.3 kW
400 W0.4 kW
500 W0.5 kW

How it scales

0.030.050.080.10255075100W

100 kW in other units

134hp136PS100000W341214BTU/h

The ratio at a glance

1 W0 kW

Kilowatts, PS, and hp — the key power units

Watts (W), kilowatts (kW), and megawatts (MW) are the SI units of power. There are also two different horsepower units that must not be confused: PS (metric horsepower, German Pferdestärke) equals exactly 735.49875 W, while hp (mechanical / imperial horsepower) equals exactly 745.6998715823 W (about 745.7 W). They differ by about 1.4 % — 1 hp ≈ 1.01387 PS. German and European vehicle specs are quoted in PS, whereas hp is used mainly in the US and UK.

Power conversions are exact and rest on fixed factors — for more unit pairs, use our power conversion hub.

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Frequently asked questions

How many kW are in 1 W?

1 W equals 0.001 kW.

How many kW are in 2 W?

2 W equal 0.002 kW.

How do I convert W to kW?

Divide the power in W by 1000 to get kW.

Is the W-to-kW conversion exact?

Yes. Power conversions are exact; the values here are only rounded to two decimal places.

What are these power units used for?

Watts (W), kilowatts (kW), and megawatts (MW) are the SI units of power, used for electricity and engines. PS (metric horsepower) is used for German and European vehicles, mechanical hp in English-speaking countries, and BTU per hour (BTU/h) for heating and air-conditioning.

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