Watt to kilowatt – convert W to kW
Convert watts to kilowatts (W to kW) for appliances, heaters, EV chargers, motors and generators. This page links straight into the main power converter with W → kW pre-selected.
Open the interactive W → kW converter:
Use main converter (W → kW) or switch to kW → WIn the power category you can also convert between W, kW, MW, horsepower (hp) and metric horsepower (hpm).
Quick reference: W to kW
One kilowatt is exactly 1 kW = 1,000 W. So: kW = W ÷ 1,000. Common examples:
| Power (W) | Power (kW) |
|---|---|
| 100 W | 0.1 kW |
| 500 W | 0.5 kW |
| 1,000 W | 1 kW |
| 2,000 W | 2 kW |
| 7,000 W | 7 kW |
Why convert watts to kilowatts?
Typical reasons include:
- Comparing appliance ratings (W) to home supply limits in kW.
- Estimating how much power your EV charger or heat pump draws.
- Converting small lab equipment ratings into kW for reports.
- Relating device power (W or kW) to energy use in kilowatt-hours (kWh).
How to use this W → kW page
For rough mental maths you can remember that 1,000 W = 1 kW, but the converter saves time:
- Click the blue button above to open the main power converter.
- Enter any power in watts and read off the exact kW value.
- Use the swap button on the homepage if you need kW → W instead.
- Switch units to hp or MW if you are comparing with engines or big generators.
Watt to kilowatt FAQ
What is the difference between W, kW and kWh?
W and kW are units of power – how fast energy is being used. kWh is a unit of energy – how much energy has been used over time. Electricity bills are in kWh, but device labels usually quote power in W or kW.
Is 750 W exactly 0.75 kW?
Yes. There is no approximation in the relationship: kW = W ÷ 1,000. So 750 W is exactly 0.75 kW.
Can I convert watts to horsepower here?
Yes. On the main power converter, set the “to” unit to hp or hpm (metric horsepower). The engine converts via watts as the base unit, so W, kW, MW, hp and hpm all stay consistent.
Related power converters on this site
All power conversions on the homepage use watts (W) as the internal base, so you can move cleanly between W, kW, MW, hp and hpm with a single engine.
Last updated: 2 December 2025