How many watts are in a kilowatt?

There are exactly 1,000 watts in one kilowatt. The prefix "kilo" means 1,000, so 1 kW = 1,000 W.

How do I convert kilowatts to watts?

Multiply the kilowatt value by 1,000. For example, a 3.5 kW air conditioner equals 3,500 W.

How do I convert watts to kilowatts?

Divide the wattage by 1,000. For example, a 1,500 W space heater equals 1.5 kW.

Why do some devices list power in kW and others in W?

Manufacturers use whichever unit produces a more convenient number. High-power devices (HVAC, generators, EV chargers) are listed in kW to avoid unwieldy figures like 7,200 W, while smaller devices (bulbs, chargers) use W for the same reason.

What is the difference between kW and kWh?

Kilowatts (kW) measure power — the rate of energy use at a given moment. Kilowatt-hours (kWh) measure energy — the total amount of energy used over time. Running a 1 kW device for 1 hour consumes 1 kWh.

Is kilowatts to watts the same formula for AC and DC?

Yes. The conversion 1 kW = 1,000 W is a unit definition and applies equally to AC and DC power. The distinction between AC and DC matters for other calculations (such as kVA vs. kW), but not for this unit conversion.

Kilowatts to Watts Calculator

Name: Kilowatts to Watts Calculator
Availability: InStock
Author: Nham Vu

Convert kilowatts to watts or watts to kilowatts instantly — 1 kW equals exactly 1,000 W.

Power Converter

Kilowatts (kW)

Watts (W)

Power Reference Table

Click any row to load that value into the converter.

Device	kW	Watts (W)

* Values are typical estimates and vary by model and usage.

Summary

Convert kilowatts to watts or watts to kilowatts instantly — 1 kW equals exactly 1,000 W.

How it works

Enter a kilowatt value in the Kilowatts field — the Watts field updates automatically.
Or enter a wattage in the Watts field — the Kilowatts field updates automatically.
The formula applied is W = kW × 1,000 (or kW = W ÷ 1,000).
Click "Copy Result" to copy the converted value to your clipboard.
Click any row in the reference table to load that device's wattage into the converter.

Use cases

Convert solar panel array output from kW to W for individual panel sizing.
Determine how many watts a generator rated in kW can supply.
Convert motor nameplate ratings between kW and W for engineering calculations.
Calculate electricity costs by converting appliance wattage to kilowatts.
Understand EV charging station power levels listed in kW vs. watts.
Size circuit breakers and wiring by converting kW loads to watts.
Compare appliance power ratings across product specs that mix kW and W units.

Frequently Asked Questions

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Last updated: 2026-05-23 · Reviewed by Nham Vu