Watt to Kilowatt Converter
Convert Watt to Kilowatt — free, instant, accurate. Part of Power converters.
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Watt to Kilowatt: values and formula
1 Watt = 0.001 Kilowatt, and 1 Kilowatt = 1000 Watt. To convert a power value from Watt to Kilowatt, multiply it by 0.001. For example, 10 Watt equals 0.01 Kilowatt, and 250 Watt equals 0.25 Kilowatt.
| Watt | Kilowatt |
|---|---|
| 1 Watt | 0.001 Kilowatt |
| 2 Watt | 0.002 Kilowatt |
| 5 Watt | 0.005 Kilowatt |
| 10 Watt | 0.01 Kilowatt |
| 25 Watt | 0.025 Kilowatt |
| 50 Watt | 0.05 Kilowatt |
| 100 Watt | 0.1 Kilowatt |
| 500 Watt | 0.5 Kilowatt |
| 1000 Watt | 1 Kilowatt |
When to use the Watt to Kilowatt converter
- Car specifications — comparing horsepower (US/UK) and PS or kW (Europe).
- Electrical appliances — reading wattage to estimate energy consumption.
- Audio equipment — speaker and amplifier ratings.
- Industrial machinery — sizing motors and pumps.
A short history of power units
James Watt defined "horsepower" in 1782 to market his steam engines against draft horses. The SI unit of power, the watt, is named in his honour. One mechanical horsepower is exactly 745.7 W; one metric horsepower (PS, used in European car specs) is 735.5 W — close but not identical.
Common mistakes when converting power
Mechanical vs metric horsepower
A 100 hp engine (mechanical) is 101.4 PS (metric). Always check which standard a quote uses.
Confusing power and energy
A 1500 W kettle uses 1.5 kWh of energy if it runs for an hour, not 1500 kWh.
BTU/h vs BTU
Air conditioner ratings in "BTU" are actually BTU per hour — the rate, not the total energy.
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