OhMyCalc

Horsepower Converter

Convert between horsepower (HP), kilowatts (kW), metric horsepower (PS), and BTU/hr. Enter a value and select the source unit.

How to Use the Horsepower Converter

  1. Enter the known physical values in the corresponding fields.
  2. Select the appropriate units if multiple options are available.
  3. The unknown value is computed instantly from the formula.
  4. Review the result and the formula explanation below.

快速参考

Speed of light299,792,458 m/s
Gravity (g)9.807 m/s²
Avogadro's number6.022 × 10²³
Boltzmann const.1.38 × 10⁻²³ J/K
Elementary charge1.602 × 10⁻¹⁹ C
Planck's const.6.626 × 10⁻³⁴ J·s

使用场景

公式

1 HP = 0.7457 kW = 1.0139 PS = 2544.43 BTU/hr = 550 ft·lbf/s.

常见问题

How to use?
Enter the data and click the calculate button.
What is the difference between HP and PS?
HP (mechanical horsepower) equals 745.7 watts, while PS (metric horsepower) equals 735.5 watts. 1 HP ≈ 1.0139 PS.
Calculation accuracy?
Calculations are performed with high precision.
Is it free?
Yes, all calculators are completely free.