Horsepower to Watts Converter 2025 - HP to W Calculator | Thiyagi

Horsepower to Watts Converter

Convert between horsepower and watts for engine power, motor specifications, and mechanical power calculations

1 HP = 745.7 W (mechanical)
1 W = 0.001341 HP
Enter a value to see the conversion result

Power Conversion Reference

Horsepower ⇔ Watts
0.1 HP ⇔ 74.6 W
0.5 HP ⇔ 373 W
1 HP ⇔ 746 W
5 HP ⇔ 3,729 W
10 HP ⇔ 7,457 W
100 HP ⇔ 74,570 W

Engine Power Examples

Small Engines (HP):
• Lawn mower: 3-7 HP
• Motorcycle: 15-200 HP
• Small car: 100-150 HP
• Compact car: 120-180 HP
Vehicle Engines (HP):
• Mid-size car: 150-250 HP
• Sports car: 300-700+ HP
• Pickup truck: 200-400 HP
• SUV: 180-500 HP
Industrial Power (high HP):
• Bus engine: 200-400 HP
• Semi truck: 400-600 HP
• Marine engine: 100-5,000+ HP
• Industrial motor: 1-10,000+ HP

Power Units

  • Horsepower: 746 watts (mechanical)
  • Watt: SI unit of power
  • Conversion: 1 HP = 745.7 W
  • Origin: James Watt (1782)

Power Tips

  • HP common for engines
  • Watts for electrical power
  • Consider efficiency losses
  • Different HP standards exist

Applications

  • Automotive: Engine ratings
  • Industrial: Motor specifications
  • Marine: Boat engines
  • Electrical: Power consumption