HP ↔ kW Converter

Convert between horsepower and kilowatts instantly

Horsepower (HP)

Enter horsepower value to convert to kilowatts

Kilowatts (kW)

Enter kilowatt value to convert to horsepower

Conversion Result

100 HP = 74.57 kW

Using mechanical horsepower (1 HP = 0.7457 kW)

⚙️ Horsepower Type

Mechanical HP (1 HP = 0.7457 kW) Metric HP (1 PS = 0.7355 kW) Electrical HP (1 HP = 0.746 kW)

Using mechanical horsepower (imperial/US customary)

📚 HP ↔ kW Conversion Details

HP to kW Formula

kW = HP × 0.7457

To convert horsepower to kilowatts, multiply HP by 0.7457 (mechanical HP).

kW to HP Formula

HP = kW ÷ 0.7457

To convert kilowatts to horsepower, divide kW by 0.7457 (mechanical HP).

Bidirectional Conversion

This converter works both ways simultaneously:

Type in HP → kW updates automatically
Type in kW → HP updates automatically
No buttons to click - works as you type

Common Uses

Engine power specifications
Electric motor ratings
Automotive industry
Industrial machinery

⚡ Types of Horsepower

Type	Abbreviation	Equivalent in kW	Common Usage
Mechanical HP	HP	0.7457 kW	USA, UK automotive
Metric HP	PS, CV, ch	0.7355 kW	Europe, Asia automotive
Electrical HP	HP	0.7460 kW	Electric motors

📏 How This Converter Works

This is a bidirectional converter that works in real-time:

HP → kW: When you type in the HP field, the kW field automatically updates
kW → HP: When you type in the kW field, the HP field automatically updates
Choose HP type: Select mechanical, metric, or electrical horsepower
Real-time: Updates happen as you type, no button clicks required

// Bidirectional Conversion Logic:
kW = HP × conversion_factor
HP = kW ÷ conversion_factor

// Conversion factors:
mechanical_HP = 0.7457
metric_HP = 0.7355
electrical_HP = 0.7460

// Example: 100 mechanical HP to kW
kW = 100 × 0.7457 = 74.57 kW

📊 Conversion Table (Mechanical HP)

Horsepower (HP)	Kilowatts (kW)	Typical Usage
1 HP	0.75 kW	Small electric motor
10 HP	7.46 kW	Lawn tractor
50 HP	37.29 kW	Small car
100 HP	74.57 kW	Midsize car
200 HP	149.14 kW	Sports car
500 HP	372.85 kW	High-performance car

❓ Frequently Asked Questions

Q: How many kilowatts are in one horsepower?

A: One mechanical horsepower equals approximately 0.7457 kilowatts. One metric horsepower equals approximately 0.7355 kilowatts.

Q: What's the difference between HP and PS?

A: HP (horsepower) is the imperial/US unit, while PS (Pferdestärke) is the metric horsepower used in Europe. 1 HP ≈ 1.014 PS.

Q: Why are there different types of horsepower?

A: Different standards developed in different regions. Mechanical HP is used in US/UK, metric HP (PS) in Europe, and electrical HP for electric motors.

Q: How do I convert car engine power from HP to kW?

A: For US/UK cars, multiply HP by 0.7457. For European cars (usually listed as PS), multiply by 0.7355. Use our converter above for exact values.