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Power Converter
Convert between watts, kilowatts, megawatts, horsepower, BTU/hr, ft·lb/s, and more. Enter a value and select units to convert instantly.
From
To
Conversion Result
Horsepower (mechanical): 1
Watts (W): 745.699872
All Conversions
| Unit | Value |
|---|---|
| Watts (W) | 745.699872 |
| Kilowatts (kW) | 0.745700 |
| Megawatts (MW) | 0.000746 |
| Gigawatts (GW) | 0.000001 |
| Horsepower (mechanical) | 1.000000 |
| Horsepower (metric) | 1.013870 |
| BTU/hour | 2544.433579 |
| ft·lb/s | 550.000000 |
| calories/s | 178.226547 |
| kcal/hour | 641.615570 |
| Joules/s (J/s) | 745.699872 |
| Volt-Amperes (VA) | 745.699872 |
Common Power Reference Values
| Device / Activity | Power |
|---|---|
| 1 horsepower in watts | 1 hp = 745.7 W |
| 1 kW in horsepower | 1 kW = 1.341 hp |
| Light bulb (LED) | 10 W = 0.0134 hp |
| Microwave oven | 1,000 W = 1.341 hp |
| Car engine (typical) | 100 kW = 134 hp |
| Jet engine | 30 MW = 40,230 hp |
| Nuclear power plant | 1 GW = 1,341,000 hp |
| Human resting metabolic | 80 W = 0.107 hp |
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Frequently Asked Questions
- How do I convert horsepower to watts?
- Multiply horsepower (mechanical) by 745.7. For example, 1 hp = 745.7 W.
- How do I convert watts to horsepower?
- Divide watts by 745.7. For example, 1,000 W / 745.7 = 1.341 hp.
- How do I convert kilowatts to horsepower?
- Multiply kW by 1.341. For example, 100 kW x 1.341 = 134.1 hp.
- How do I convert horsepower to kilowatts?
- Multiply horsepower by 0.7457. For example, 100 hp x 0.7457 = 74.57 kW.
- How do I convert BTU/hr to watts?
- Multiply BTU/hr by 0.293071. For example, 10,000 BTU/hr x 0.293071 = 2,930.7 W.
- How do I convert watts to BTU/hr?
- Multiply watts by 3.41214. For example, 1,000 W x 3.41214 = 3,412.14 BTU/hr.
- How do I convert ft·lb/s to watts?
- Multiply ft·lb/s by 1.35582. For example, 550 ft·lb/s x 1.35582 = 745.7 W (1 hp).
- What is the difference between mechanical and metric horsepower?
- Mechanical hp = 745.7 W. Metric hp (PS/CV) = 735.5 W. Mechanical hp is used in the US, metric in Europe.
- How many watts are in a kilowatt?
- There are 1,000 watts in one kilowatt.
- How many kilowatts are in a megawatt?
- There are 1,000 kilowatts in one megawatt.
- How many megawatts are in a gigawatt?
- There are 1,000 megawatts in one gigawatt.
- What is power?
- Power is the rate at which work is done or energy is transferred, measured in watts (1 W = 1 J/s).
- How do I convert watts to kilowatts?
- Divide watts by 1,000. For example, 1,500 W / 1000 = 1.5 kW.
- How do I convert kilowatts to watts?
- Multiply kW by 1,000. For example, 2.5 kW x 1000 = 2,500 W.
- How do I convert watts to megawatts?
- Divide watts by 1,000,000. For example, 5,000,000 W / 1e6 = 5 MW.
- How many BTUs per hour is 1 watt?
- 1 watt = 3.41214 BTU/hr. A typical 12,000 BTU air conditioner uses about 3,517 W.
- What is the difference between power and energy?
- Power is the rate of energy use (watts). Energy is total work done (joules or kWh). 1 kWh = 3.6 MJ.
- How do I calculate electrical power?
- Electrical power P = V x I (voltage times current). For DC: P = VI. For AC: P = VI x power factor.
- How do I convert hp to BTU/hr?
- Multiply hp by 2,544. For example, 1 hp x 2544 = 2,544 BTU/hr.
- How do I convert BTU/hr to hp?
- Divide BTU/hr by 2,544. For example, 10,000 BTU/hr / 2544 = 3.93 hp.
- What is a watt?
- A watt is the SI unit of power, equal to one joule per second. It measures the rate of energy conversion.
- How do I convert engine power from kW to hp?
- Multiply kW by 1.341. A 150 kW engine produces about 201 hp.
- How much power does a human generate?
- A resting human produces about 80 W. During exercise, a fit person can generate 200-400 W briefly.
- How do I convert power for HVAC?
- HVAC systems are rated in BTU/hr and tons. 1 ton = 12,000 BTU/hr = 3.517 kW. SEER ratings measure efficiency.
- How do I convert megawatts to horsepower?
- Multiply MW by 1,341. For example, 1 MW = 1,341 hp.
- What is the difference between watt and volt-ampere?
- For DC circuits, W = VA. For AC, VA = W / power factor. A device drawing 1,000 VA at 0.8 PF uses 800 W.
- How do I convert calories per second to watts?
- Multiply cal/s by 4.184. For example, 10 cal/s x 4.184 = 41.84 W.
- How do I convert kcal/hour to watts?
- Multiply kcal/h by 1.16222. For example, 1,000 kcal/h x 1.16222 = 1,162.22 W.
- How is power measured in cars?
- Engine power is measured in horsepower (US) or kilowatts (metric). Brake horsepower (bhp) is measured at the crankshaft.
- How do I convert between hp and ft·lb/s?
- 1 hp = 550 ft·lb/s exactly. This is the original definition of horsepower by James Watt.