Horsepower to Kilowatts Conversion | Complete Guide & Info
Horsepower in Kilowatts
The Definitive Conversion Guide
Instant HP ↔ kW converter, all 4 HP types explained, EV & engine comparisons, and the best-rated products by power output.
⚡ HP ↔ kW Live Converter
All four horsepower types supported — pick yours before converting.
kW = HP × 0.7457
200 HP × 0.7457 = 149.14 kW
HP = kW × 1.34102
150 kW × 1.34102 = 201.15 HP
4 Types of Horsepower — Which One Applies to You?
Every industry uses a different HP definition. Here's how to tell them apart — and avoid being misled by spec sheets.
Mechanical HP (SAE)
The U.S. standard for cars, trucks, generators, and lawnmowers. Named after James Watt. All American car window stickers use this.
1 kW = 1.34102 HP
Metric HP (PS / CV)
Europe & Asia standard. PS = Pferdestärke (German). CV = Cheval-Vapeur (French). Slightly less than SAE — a 300 PS BMW ≈ 296 SAE HP.
1 kW = 1.35962 PS
Electrical HP
Used for electric motors, EVs, and industrial equipment. Defined as exactly 746 W. Almost identical to SAE — only 0.04% difference.
1 kW = 1.34048 HP
Boiler Horsepower
Industrial only — 1 Boiler HP = 9.81 kW (~13.1 SAE HP). Used exclusively for steam boilers and HVAC plant ratings. You will almost never encounter this as a consumer.
1 kW = 0.1019 BHP
HP to kW Conversion Table
Every major power level — from budget e-bikes to hypercar engines — with real vehicle comparisons.
| HP (SAE) | kW | PS (Metric) | Watts | Power Tier | Real Vehicle / Product | Type |
|---|---|---|---|---|---|---|
| 0.5 | 0.373 | 0.507 | 373 | Budget e-bike motor | E-Bike | |
| 1.0 | 0.746 | 1.014 | 746 | U.S. street-legal e-bike max (750W) | E-Bike | |
| 5 | 3.73 | 5.07 | 3,729 | Portable generator / go-kart | Generator | |
| 10 | 7.46 | 10.1 | 7,457 | Whole-home standby generator | Generator | |
| 50 | 37.3 | 50.7 | 37,285 | Renault Twingo E-Tech EV | EV | |
| 80 | 59.7 | 81.1 | 59,656 | Nissan Leaf (base) | EV | |
| 100 | 74.6 | 101 | 74,570 | Economy compact gas car | Gas | |
| 147 | 109.7 | 149 | 109,618 | Nissan Leaf Plus (62 kWh) | EV | |
| 150 | 111.9 | 152 | 111,855 | Average mid-size gas sedan | Gas | |
| 201 | 150.0 | 204 | 149,743 | 150 kW = BMW 3 Series EV equiv. | EV | |
| 240 | 179.0 | 243 | 178,968 | Volkswagen ID.4 Pro (82 kWh) | EV | |
| 300 | 223.7 | 304 | 223,710 | BMW M3 Competition | Gas | |
| 379 | 282.6 | 384 | 282,621 | Tesla Model 3 Long Range AWD | EV | |
| 450 | 335.6 | 456 | 335,565 | Ford Mustang Mach-E GT | EV | |
| 503 | 375.0 | 510 | 375,000 | Lamborghini Huracán (V10) | Gas | |
| 670 | 499.7 | 679 | 499,719 | Tesla Model S Plaid (1 motor) | EV | |
| 751 | 560.1 | 761 | 560,083 | Porsche Taycan Turbo S | EV | |
| 1,020 | 760.7 | 1,034 | 760,674 | Bugatti Chiron (W16 quad-turbo) | Gas | |
| 1,438 | 1,073 | 1,457 | 1,072,966 | Rimac Nevera (quad-motor EV) | EV |
Famous Engines — HP & kW Side by Side
The numbers behind the names you know — in both units at once.
HP ↔ kW Cheat Sheet
Save or bookmark — the numbers you'll reach for most.
⚡ E-Bikes & Motors
🚗 Cars (SAE HP → kW)
🔋 Generators (kW → HP)
🧮 Mental Math Fast Track
Best-Rated Products by kW Rating — 2026 Picks
All independently researched. We never accept payment for rankings. Affiliate links keep this guide free.
At 7.2 kW (9.7 HP of continuous power transfer), the JuiceBox 40 is the most popular smart EV charger in North America. It adds up to 34 miles of range per hour and connects to Wi-Fi for energy scheduling, real-time monitoring, and utility rate optimization. Compatible with every EV sold in the U.S. and Canada — from Tesla to Rivian to Chevy.
The U.S. street-legal cap is 750W (0.75 kW / 1 HP) — and the Aventon Level 3 uses every watt of it more efficiently than any rival at this price. A torque sensor, 720Wh battery, 4G GPS smart lock, hydraulic disc brakes, and integrated turn signals make it the most complete fast commuter e-bike under $2,000 in 2026.
Honda's EU3200i delivers 3.5 kW (4.7 HP) of clean, stable inverter power — safe for medical equipment, laptops, and sensitive electronics. At just 57.5 dB it runs quieter than a normal conversation, making it exceptional for camping, jobsites, and home backup. Honda's legendary reliability means a purchase that lasts 10–15 years with proper maintenance.
Solar panels and portable power stations are rated in watts/kW — understanding the conversion helps you size your system correctly. The DELTA 2 Max outputs 2 kW (2.68 HP) continuously and can be recharged by the included 220W panel bundle. It runs power tools, appliances, and even a window AC unit. Expandable to 6 kWh total capacity.
When 0.75 kW isn't enough, the Delfast Top 3.0i's 5 kW (6.7 HP) motor changes the conversation entirely. That's the same continuous power as a mid-size riding tractor — delivering 50 mph in off-road unlocked mode with a staggering 200-mile range. The U.S. model ships speed-limited for road compliance with 4G GPS anti-theft built in.
⚡ More Power Conversion Guides
We've covered every major power unit across every product category — from e-bikes to EVs, generators to solar.