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Formula

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Power in Watts
1,000
watts (W)
Input 1 kW
Conversion 1 kW = 1,000 W

What Is the Kilowatts to Watts Calculator?

This calculator converts electrical power from kilowatts (kW) to watts (W). The watt is the SI base unit of power, while the kilowatt is simply a larger unit equal to 1,000 watts. The conversion is universal and applies anywhere in the world — it is a pure unit conversion with no country-specific rules.

How to Use It

Enter the power value in kilowatts into the input box and submit. The calculator multiplies your value by 1,000 and returns the equivalent power in watts. It accepts decimals, so 2.5 kW or 0.75 kW both work fine.

The Formula Explained

The conversion uses the simple relationship $$\text{Power (W)} = \text{Power (kW)} \times 1000$$ Because "kilo" means one thousand, one kilowatt is defined as exactly 1,000 watts. To reverse the conversion (watts to kilowatts) you divide by 1,000 instead.

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Diagram showing kW multiplied by 1000 equals W
Multiply kilowatts by 1000 to get watts.

Worked Example

Suppose you have an appliance rated at 3.5 kW. Multiply by 1,000: $$3.5 \times 1000 = 3{,}500 \text{ W}$$ So a 3.5 kW heater draws 3,500 watts of power.

FAQ

How many watts are in 1 kilowatt? Exactly 1,000 watts.

Is this the same as kWh? No. A kilowatt (kW) measures power (rate of energy use), while a kilowatt-hour (kWh) measures energy used over time. This tool only converts the power unit.

How do I convert watts back to kilowatts? Divide the number of watts by 1,000. For example, \(4{,}500 \text{ W} \div 1000 = 4.5 \text{ kW}\).

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