Horsepower
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Equivalent power
Accurate conversion between Kilowatts (kW) and Horsepower (hp)
Convert Kilowatts to Horsepower instantly with precise calculations. Includes reverse Horsepower to Kilowatts conversion, full formula reference, real-world power examples, and kW to hp conversion tables for 2026.
Professional power conversion for automotive, electrical engineering, motorsport, and industrial applications
Convert Kilowatts to Horsepower using the internationally defined relationship: 1 mechanical horsepower (hp) = 745.69987 W = 0.74569987 kW. This means 1 kW = approximately 1.34102 hp. Our tool uses the exact conversion constant and delivers full-precision results instantly for any power value you enter — from household motors to high-performance engines.
Switch between kW to hp and hp to kW conversion in one click. Whether you are comparing an electric vehicle's kW motor rating to a petrol car's horsepower, converting an engine specification from a European datasheet (kW) to an American spec sheet (hp), or checking a generator output — both directions are handled instantly from a single input field.
Essential for automotive engineering, electric vehicle specifications, motorsport, marine engines, industrial motors, HVAC systems, generator sizing, and physics education in 2026. Kilowatts are the SI standard for power, while horsepower remains dominant in automotive marketing in the USA, UK, and Australia — making kW to hp one of the most searched power conversions worldwide.
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A kilowatt (kW) is a unit of power in the International System of Units (SI), equal to 1,000 watts. The watt (W) is itself defined as one joule of energy transferred per second (1 W = 1 J/s). The kilowatt is the standard unit for expressing mechanical power output, electrical power, and thermal power in engineering specifications, energy consumption ratings, and motor datasheets worldwide.
In automotive contexts, kilowatts are used in Europe, Australia, and most metric countries to express engine power — while the USA and some other markets still use horsepower (hp). Electric vehicles are universally rated in kilowatts for their motor output. You can explore more power and unit converters at the ConcreticMetric converter hub.
The conversion uses the exact defined value of mechanical horsepower: 1 hp = 550 foot-pounds per second = 745.69987158227022 watts. This value was standardised by the US National Bureau of Standards.
Example: 150 kW × 1.34102 = 201.15 hp
Example: 300 hp × 0.74570 = 223.71 kW
Bar heights represent approximate relative power on a proportional scale
The reference table below covers the most commonly needed kW to hp conversions, from small appliance motors through to high-performance vehicles and large industrial engines.
| Kilowatts (kW) | Horsepower (hp) | Metric HP (PS) | Real-World Reference |
|---|---|---|---|
| 0.746 kW | 1.000 hp | 1.014 PS | 1 horsepower exactly |
| 1 kW | 1.341 hp | 1.360 PS | Small power tool motor |
| 2 kW | 2.682 hp | 2.719 PS | Domestic washing machine motor |
| 5 kW | 6.705 hp | 6.798 PS | Small electric scooter |
| 10 kW | 13.410 hp | 13.596 PS | E-bike / small electric motor |
| 15 kW | 20.115 hp | 20.394 PS | Ride-on lawnmower engine |
| 22 kW | 29.502 hp | 29.911 PS | Small industrial motor |
| 37 kW | 49.618 hp | 50.313 PS | Compact city car engine |
| 55 kW | 73.756 hp | 74.778 PS | Small family hatchback |
| 75 kW | 100.577 hp | 101.971 PS | Mid-range family car |
| 100 kW | 134.102 hp | 135.962 PS | Average family sedan |
| 150 kW | 201.154 hp | 203.943 PS | Sporty family car / Tesla Model 3 SR |
| 200 kW | 268.204 hp | 271.924 PS | Performance SUV |
| 250 kW | 335.255 hp | 339.905 PS | Sports car / BMW M3 |
| 300 kW | 402.307 hp | 407.886 PS | High-performance sports car |
| 373 kW | 500.201 hp | 507.034 PS | ~500 hp supercar |
| 500 kW | 670.511 hp | 679.810 PS | Lamborghini / Ferrari territory |
| 746 kW | 1,000.000 hp | 1,013.866 PS | 1,000 hp hypercars |
| 1,000 kW | 1,341.022 hp | 1,359.621 PS | Formula 1 power unit (approx.) |
Converting kW to hp uses the exact defined value of mechanical horsepower. Here is the step-by-step method:
The horsepower unit was coined by Scottish engineer James Watt in the late 18th century to market steam engines by comparing their output to that of draft horses. Watt calculated that a horse could turn a mill wheel generating approximately 33,000 foot-pounds of work per minute — this became the definition of 1 hp still used today.
In Australia and Europe, car power is officially quoted in kilowatts. In the USA and UK, horsepower is the dominant marketing unit. A car badged "200 kW" in Australia corresponds to 268 hp — the same number a US spec sheet would show. Always check which hp standard is used (mechanical, metric, or electrical).
There are three common horsepower standards: Mechanical hp (US standard, 1 hp = 745.7 W), Metric hp / PS / CV (European, 1 PS = 735.5 W), and Electrical hp (used for motors, 1 hp = 746 W exactly). Most automotive figures use mechanical hp in the USA and metric PS in Europe — the difference is about 1.4%.
Electric vehicle motors are always rated in kilowatts. A Tesla Model 3 Long Range produces 324 kW (435 hp) from its dual motors. The Rimac Nevera hypercar produces 1,408 kW (1,888 hp) from four electric motors — demonstrating how EV power output now far exceeds traditional combustion engine hypercars.
A Formula 1 power unit (internal combustion engine + energy recovery systems) produces approximately 1,000 kW (1,340 hp) in 2026. The ICE alone generates around 750 kW (1,000 hp), with the MGU-K (motor generator unit — kinetic) adding up to 120 kW (160 hp) of additional electrical power during deployment.
Industrial electric motors are rated in kilowatts in metric countries and horsepower in the USA. A standard NEMA motor frame may be labelled as a 75 hp motor, which equals 55.93 kW. Large industrial fans, compressors, and pumps are often specified in both units, making kW-to-hp conversion essential for procurement and specification matching.
1 kW = 1.34102 hp (mechanical) = 1.35962 PS (metric) = 1,000 W
To convert kW → hp: multiply by 1.34102. To convert hp → kW: multiply by 0.74570.
A new electric SUV is advertised as having 295 kW of motor power.
295 × 1.34102 = 395.6 hp — the figure a US buyer would expect to see. The same car's metric PS value: 295 × 1.35962 = 401.1 PS, which would appear on a German spec sheet.
Do not confuse mechanical horsepower (hp) with metric horsepower (PS/CV/ch). 1 mechanical hp = 745.7 W, while 1 metric PS = 735.5 W. A European car rated at 300 PS has 295.9 mechanical hp, not 300 hp. When comparing specs from different markets, always verify which horsepower standard is being used to avoid a ~1.4% discrepancy.
The Bureau International des Poids et Mesures (BIPM) defines the watt as the SI derived unit of power. Their official SI Brochure documents the watt, kilowatt, and related units — the authoritative global reference for all power unit definitions and conversion factors used in engineering and science in 2026.
Visit BIPM →The US National Institute of Standards and Technology (NIST) documents the exact definition of mechanical horsepower (1 hp = 550 ft·lbf/s = 745.69987 W) and provides official conversion factors between hp, kW, PS, and watts used in American and international engineering standards and specifications.
Visit NIST →ConcreticMetric offers free converters for power, force, weight, speed, length, area, pressure, energy, time, and more. All tools are mobile-friendly, free, and built for accuracy in 2026 — with instant results, full formula references, and real-world examples for every conversion.
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