Kilowatts to Watts Converter
Convert kilowatts to watts — multiply by a thousand. Results update as you type; exact factors shown.
One kilowatt is 1,000 watts — see the exact factor, not a rounded rule of thumb.
How the kilowatts to watts converter works
Power converts through the watt. Mechanical horsepower is 550 ft·lbf/s = 745.6999 W; metric horsepower (PS, used in European car specs) is 735.4988 W. Air-conditioner capacities are quoted in kW, BTU/h (1 W = 3.412 BTU/h) or tons of refrigeration (3.517 kW).
The US uses customary units (US gallon, short ton, °F) in daily life; NIST SP 811 gives the exact SI factors.
Common power conversions
| From | To | Units |
|---|---|---|
| 0.1 kW | 100 W | kilowatts to watts |
| 0.5 kW | 500 W | kilowatts to watts |
| 1 kW | 1,000 W | kilowatt to watts |
| 1.5 kW | 1,500 W | kilowatts to watts |
| 2 kW | 2,000 W | kilowatts to watts |
| 2.4 kW | 2,400 W | kilowatts to watts |
| 3.5 kW | 3,500 W | kilowatts to watts |
| 5 kW | 5,000 W | kilowatts to watts |
| 7 kW | 7,000 W | kilowatts to watts |
| 10 kW | 10,000 W | kilowatts to watts |
| 50 kW | 50,000 W | kilowatts to watts |
| 100 kW | 100,000 W | kilowatts to watts |
Units in this converter and their exact factors
| Unit | Symbol | One unit in watts |
|---|---|---|
| watt | W | 1 watt |
| kilowatt | kW | 1,000 watt |
| megawatt | MW | 1,000,000 watt |
| horsepower (mechanical) | hp | 745.6998715823 watt |
| metric horsepower (PS) | PS | 735.49875 watt |
| BTU per hour | BTU/h | 0.29307107 watt |
| ton of refrigeration | TR | 3,516.8528421 watt |
FAQFrequently asked questions about power conversion
How many watts in a kilowatt?
1,000.
What is 3.5 kW?
3,500 W — a common air-conditioner capacity.
What is the difference between kW and kWh?
kW is a rate; kWh is an amount. A 2 kW heater for three hours uses 6 kWh.
What is a 7 kW EV charger?
7,000 W — about 30 amps at 240 V, adding roughly 40 km of range an hour.
What is 100 kW in horsepower?
134 hp.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Institute of Standards and Technology (NIST) — United States's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.