Kilowatts to Horsepower Conversion Calculator

Kilowatts to Horsepower Calculator

Enter power in kilowatts:

Mechanical horsepower: hp(I)

Electrical horsepower: hp(E)

Metric horsepower: hp(M)

A kW to HP calculator converts power measurements between kilowatts (kW) (metric/SI unit) and horsepower (HP) (mechanical/imperial unit). This conversion is essential for:
✅ Automotive engineering (engine power ratings)
✅ Industrial machinery (motor specifications)
✅ HVAC systems (compressor power)
✅ Electric motors & pumps

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Conversion Formulas

1. kW to Mechanical HP (Most Common)

$$P(HP)=P(kW)\times 1.34102$$

Example:

• Convert 75 kW to HP:

  $$75\times 1.34102=100.58\text{ HP}$$

2. kW to Metric HP (PS, used in Europe)

$$P(PS)=P(kW)\times 1.35962$$

Example:

• Convert 50 kW to PS:

  $$50\times 1.35962=67.98\text{ PS}$$

3. HP to kW (Reverse Calculation)

$$P(kW)=P(HP)\times 0.7457$$

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Conversion Table (kW ⇆ HP)

Kilowatts (kW)	Mechanical HP	Metric HP (PS)
1 kW	1.34 HP	1.36 PS
5 kW	6.71 HP	6.80 PS
10 kW	13.41 HP	13.60 PS
20 kW	26.82 HP	27.19 PS
50 kW	67.05 HP	67.98 PS
100 kW	134.10 HP	135.96 PS

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How to Use the Calculator

1. Enter kW → Get HP (Multiply by 1.34102 for mechanical HP).

2. For PS (metric HP), multiply by 1.35962.

Example Calculations:

• 22 kW to HP:

  $$22\times 1.34102\approx 29.5\text{ HP}$$

• 30 kW to PS:

  $$30\times 1.35962\approx 40.79\text{ PS}$$

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Practical Applications

• Car Engines: European cars often list power in kW, while US uses HP.

• Electric Vehicles: Motor output in kW, often converted to HP for comparison.

• Industrial Pumps/Compressors: Power ratings in HP or kW depending on region.

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Comparison of Power Units

Unit	Kilowatts (kW)	Mechanical HP	Metric PS
1 kW	1 kW	1.341 HP	1.360 PS
1 HP (mechanical)	0.7457 kW	1 HP	1.014 PS
1 PS (metric)	0.7355 kW	0.986 HP	1 PS

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FAQ

1. How many HP is 1 kW?

✅ 1 kW ≈ 1.34 HP (mechanical) or 1.36 PS (metric).

2. Why do Europe and US use different units?

🔹 Metric (kW/PS) vs. Imperial (HP) standards.

3. Is HP or kW more accurate?

🔹 kW is the SI unit, preferred for technical precision.

4. How to convert 150 kW to HP?

$$150\times 1.34102\approx 201.15\text{ HP}$$

5. What’s the difference between HP and PS?

🔹 1 PS = 0.986 HP (Metric HP is ~1.4% less than mechanical HP).