Watts to Horsepower Converter
📚 Examples, Formula, and How To
📝 Watts to Horsepower Formula
Watts to Horsepower
Horsepower = Watts ÷ 745.7To convert watts to mechanical horsepower, divide the watt value by 745.7. This is the internationally accepted conversion factor.
Horsepower to Watts
Watts = Horsepower × 745.7To convert horsepower to watts, multiply the horsepower value by 745.7. This gives you the equivalent power in watts.
💡 Converting Watts to Horsepower
Example 1
Convert: 1000 watts to horsepower
Start with the conversion formula: Horsepower = Watts ÷ 745.7
Substitute the value: Horsepower = 1000 ÷ 745.7
Calculate: 1000 ÷ 745.7 = 1.341
Example 2
Convert: 300 horsepower to watts
Start with the conversion formula: Watts = Horsepower × 745.7
Substitute the value: Watts = 300 × 745.7
Calculate: 300 × 745.7 = 223,710
Example 3
Convert: 100 watts to horsepower
Start with the conversion formula: Horsepower = Watts ÷ 745.7
Substitute the value: Horsepower = 100 ÷ 745.7
Calculate: 100 ÷ 745.7 = 0.134
📊 Watts to Horsepower Conversion Table
Common Watts to Horsepower Conversions
| Watts | Horsepower |
|---|---|
| 100 W | 0.13 hp |
| 250 W | 0.34 hp |
| 500 W | 0.67 hp |
| 746 W | 1.00 hp |
| 1000 W | 1.34 hp |
| 1500 W | 2.01 hp |
| 2000 W | 2.68 hp |
| 3000 W | 4.02 hp |
| 5000 W | 6.71 hp |
| 7500 W | 10.06 hp |
| 10000 W | 13.41 hp |
All values are rounded to 4 decimal places for practical use
⚙️ How to Convert Watts to Horsepower
Power Conversion Formula
Divide watts by 745.7 to get mechanical horsepower, or multiply horsepower by 745.7 to get watts
Based on James Watt's definition: 1 hp = 745.7 watts exactly.
Engineering Applications
Essential for automotive, industrial equipment, and electrical motor specifications
Used for engine ratings, motor sizing, and power system calculations.
📚 What are Watts and Horsepower?
📏 Watt(W)
Definition:
A watt is the SI unit of power, equal to one joule per second. It measures the rate of energy transfer or conversion.
History:
Named after Scottish inventor James Watt in 1882. The watt became the standard unit of electrical power measurement.
Common Uses:
- Electrical appliance power ratings
- Light bulb brightness specifications
- Solar panel and battery output
- Computer and electronic device consumption
- Industrial motor and equipment ratings
Fun Fact:
A human can produce about 100 watts of power when cycling, and up to 400 watts briefly when sprinting! The original definition was based on horsepower - James Watt wanted to compare his steam engines to horses. A lightning bolt can produce up to 1 billion watts for a microsecond!
📏 Horsepower(hp)
Definition:
Horsepower is a unit of measurement of power. One mechanical horsepower equals exactly 745.699872 watts.
History:
Coined by James Watt in the 1780s to market his steam engines by comparing them to the power of draft horses working in mines.
Common Uses:
- Automotive engine power ratings
- Industrial machinery specifications
- Lawn mower and small engine ratings
- Electric motor capacity measurements
- Marine engine power specifications
Fun Fact:
James Watt determined that a horse could pull 330 pounds of coal 100 feet per minute, which he defined as 1 horsepower. The world's most powerful car engine produces over 1,500 hp! Funny fact: an actual horse can only sustain about 0.7 horsepower continuously, though they can peak at 14.9 hp briefly!