Watt to Kilowatt

Convert watt to kilowatt instantly. Type in either field — results update live.

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Power Watt Kilowatt

1 watt = 0.001 kilowatts

From

Format

Conversion table

Selected W values converted to kW using the exact factor from this tool.

W	kW
0.01	0.00001
0.1	0.0001
1	0.001
2	0.002
3	0.003
5	0.005
10	0.01
20	0.02
50	0.05
100	0.1
1,000	1

How to convert

Exact conversion factors in both directions, plus a worked example.

1 W = 0.001 kW

1 kW = 1000 W

To convert watt to kilowatt, multiply by 0.001.

To convert kilowatt to watt, multiply by 1000.

Example: convert 10 W to kW

10 × 0.001 = 0.01 kW

About these units

Short background on the units used in this conversion.

Watt (W)

The watt is the SI unit of power — one joule of energy transferred per second.

Watts rate light bulbs, appliance nameplates, solar panels, and electrical device consumption.

Kilowatt (kW)

A kilowatt is one thousand watts — a practical scale for motors, heaters, and grid-scale equipment.

Kilowatts describe EV charging rates, home HVAC capacity, and small generator output.

Frequently asked questions

How many kilowatts are in one watt?

One watt equals 0.001 kilowatts. Multiply your watts value by 0.001 to convert to kilowatts.

What is the conversion formula?

kW = W × 0.001

The reverse is W = kW × 1,000, using the same exact factors as this converter.

Is this Watt to Kilowatt converter private?

Yes. All calculations run locally in your browser. Nothing you type is sent to a server.

All watt conversions

Jump to any power conversion starting from watt — including the reverse direction and every other unit in our dataset.

kilowatt (kW) → watt (W)

watt (W) → megawatt (MW)watt (W) → gigawatt (GW)watt (W) → horsepower (mechanical / uk) (hp)watt (W) → horsepower (metric) (metric hp)watt (W) → horsepower (electric) (hp (electric))watt (W) → british thermal unit (it) per hour (Btu/h)watt (W) → ton (refrigeration) (TR)watt (W) → exawatt (EW)watt (W) → petawatt (PW)watt (W) → terawatt (TW)watt (W) → hectowatt (hW)watt (W) → dekawatt (daW)watt (W) → deciwatt (dW)watt (W) → centiwatt (cW)watt (W) → milliwatt (mW)watt (W) → microwatt (µW)watt (W) → nanowatt (nW)watt (W) → picowatt (pW)watt (W) → femtowatt (fW)watt (W) → attowatt (aW)watt (W) → horsepower (550 ft·lbf/s) (hp)watt (W) → horsepower (boiler) (hp (boiler))watt (W) → horsepower (water) (hp (water))watt (W) → pferdestärke (ps) (PS)watt (W) → british thermal unit (it) per minute (Btu/min)watt (W) → british thermal unit (it) per second (Btu/s)watt (W) → british thermal unit (thermochemical) per hour (Btu (th)/h)watt (W) → british thermal unit (thermochemical) per minute (Btu (th)/min)watt (W) → british thermal unit (thermochemical) per second (Btu (th)/s)watt (W) → mega british thermal unit (it) per hour (MBtu/h)watt (W) → mbh (thousand btu per hour)watt (W) → kilocalorie (it) per hour (kcal/h)watt (W) → kilocalorie (it) per minute (kcal/min)watt (W) → kilocalorie (it) per second (kcal/s)watt (W) → kilocalorie (thermochemical) per hour (kcal (th)/h)watt (W) → kilocalorie (thermochemical) per minute (kcal (th)/min)watt (W) → kilocalorie (thermochemical) per second (kcal (th)/s)watt (W) → calorie (it) per hour (cal/h)watt (W) → calorie (it) per minute (cal/min)watt (W) → calorie (it) per second (cal/s)watt (W) → calorie (thermochemical) per hour (cal (th)/h)watt (W) → calorie (thermochemical) per minute (cal (th)/min)watt (W) → calorie (thermochemical) per second (cal (th)/s)watt (W) → foot pound-force per hour (ft·lbf/h)watt (W) → foot pound-force per minute (ft·lbf/min)watt (W) → foot pound-force per second (ft·lbf/s)watt (W) → pound-foot per hour (lbf·ft/h)watt (W) → pound-foot per minute (lbf·ft/min)watt (W) → pound-foot per second (lbf·ft/s)watt (W) → erg per second (erg/s)watt (W) → kilovolt ampere (kV·A)watt (W) → volt ampere (V·A)watt (W) → newton meter per second (N·m/s)watt (W) → joule per second (J/s)watt (W) → exajoule per second (EJ/s)watt (W) → petajoule per second (PJ/s)watt (W) → terajoule per second (TJ/s)watt (W) → gigajoule per second (GJ/s)watt (W) → megajoule per second (MJ/s)watt (W) → kilojoule per second (kJ/s)watt (W) → hectojoule per second (hJ/s)watt (W) → dekajoule per second (daJ/s)watt (W) → decijoule per second (dJ/s)watt (W) → centijoule per second (cJ/s)watt (W) → millijoule per second (mJ/s)watt (W) → microjoule per second (µJ/s)watt (W) → nanojoule per second (nJ/s)watt (W) → picojoule per second (pJ/s)watt (W) → femtojoule per second (fJ/s)watt (W) → attojoule per second (aJ/s)watt (W) → joule per hour (J/h)watt (W) → joule per minute (J/min)watt (W) → kilojoule per hour (kJ/h)watt (W) → kilojoule per minute (kJ/min)