Why Convert Kilowatts to Watts?
Converting between kilowatts (kW) and watts (W) is one of the most common power conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert kW to W saves time and prevents errors.
Power conversions between kW and W are essential for automotive, electrical, and HVAC applications. Car specifications in Europe and China list engine power in kilowatts (kW), while the US and Japan prefer horsepower (hp). Home appliance energy labels show wattage for comparing electricity consumption. When sizing generators, air conditioners, or solar panels, accurate power conversion ensures you select the right equipment for your needs.
How to Convert Kilowatts to Watts
To convert kilowatts to watts, use the following formula:
W = kW × 1000
Example: 1 kW = 1000 W
For example, 5 kW = 5000 W, 10 kW = 10000 W, and 100 kW = 100000 W. Our calculator above performs this conversion instantly with full precision — no rounding errors.
Common Use Cases
- A split-type air conditioner: 1.5 kW = 1500 W
- A central air conditioning unit: 3 kW = 3000 W
- An LED light bulb (10W): 0.01 kW = 10 W
- Rooftop solar panel system for a home: 5 kW = 5000 W
Common Mistakes to Avoid
- Horsepower variants: Mechanical horsepower (550 ft·lbf/s) ≈ 745.7 W, while metric horsepower (PS) ≈ 735.5 W. This converter uses mechanical hp.
- Peak vs continuous power: Motor specifications may list peak or continuous power. A "2000W peak" motor might only sustain 1200W continuously.
- Electrical vs mechanical: Electrical power (watts) and mechanical output (horsepower) differ by motor efficiency (typically 80-95%).
Pro Tips
- Memorize the factor: 1 kW = 1000 W. For quick mental math, remember this base conversion.
- Quick reference: 5 kW = 5000 W · 10 kW = 10000 W · 25 kW = 25000 W · 50 kW = 50000 W · 100 kW = 100000 W
- Bookmark this page: Save this converter for instant access. It works offline once loaded — no internet needed.
Kilowatts to Watts Conversion Table
| kW | W |
|---|---|
| 0.01 kW | 10 W |
| 0.1 kW | 100 W |
| 0.5 kW | 500 W |
| 1 kW | 1000 W |
| 2 kW | 2000 W |
| 5 kW | 5000 W |
| 10 kW | 10000 W |
| 20 kW | 20000 W |
| 50 kW | 50000 W |
| 100 kW | 100000 W |
| 500 kW | 500000 W |
| 1000 kW | 1000000 W |
All values in this table are mathematically exact per NIST SP 811.