Power Converter
Convert watts, kilowatts, horsepower, BTU/h, and more in an instant.
Power Conversion
Metric (Watts)
Horsepower
Other Units
Common Power Usage
⚡ Bonus: Calculate Device Electricity Cost
Quick device presets:
Tip: Type in any power unit and all others update instantly. Use the electricity cost calculator to understand your Eskom bills.
How it works
Base Unit: 1 watt (W) Metric to Watts: 1 kW = 1,000 W | 1 MW = 1,000,000 W Horsepower to Watts: 1 hp (mechanical) = 745.7 W | 1 PS (metric) = 735.5 W Other to Watts: 1 BTU/h = 0.293 W | 1 cal/s = 4.184 W Common Power Reference: Human at rest = 80W | Cycling hard = 300–400W Average home = 1.2 kW continuous Electric kettle = 2–3 kW | Microwave = 700W–1.2kW EV motor = 100–300 kW | Petrol car = 100–300 kW Solar panel = 250–400W per panel
Enter a power value in any unit and see the conversion to all others instantly. Supports watts, kilowatts, horsepower (mechanical and metric), BTU per hour, and calories per second. Bonus: Calculate the cost to run any device based on power consumption, hours used, and your local electricity rate. Perfect for understanding home energy use and Eskom bills.
Why this matters
Power (energy per time) is measured differently depending on context. Engineers use watts; car enthusiasts use horsepower; old heating systems use BTU. Understanding power helps you manage electricity bills, choose solar panels, understand appliance specifications, and compare vehicle performance. The electricity cost calculator helps South African users understand Eskom consumption costs.
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The complete guide to power converter
Formulas, examples, and tips explained in plain English