Energy and Power Converters
Convert between different units of energy and power: kilowatts, horsepower, joules, calories, and more.
Kilowatt (kW)
International system power unit
Horsepower (HP)
Traditional power unit
Joule (J)
SI unit of energy
Calorie (cal)
Thermal energy unit
Kilowatt to HP
kW → HP
Convert kilowatts to horsepower. Ideal for motors, machinery, and technical specifications.
HP to Kilowatt
HP → kW
Convert horsepower to kilowatts. Perfect for understanding international specifications.
Joule to Calorie
J → cal
Convert joules to calories. Essential for nutrition, chemistry, and thermodynamics.
Calorie to Joule
cal → J
Convert calories to joules. Perfect for scientific and energy calculations.
Energy Equivalence Table
| Kilowatt | HP | Joule | Calorie |
|---|---|---|---|
| 1 kW | 1.341 HP | 1,000 J/s | 238.85 cal/s |
| 0.746 kW | 1 HP | 746 J/s | 178.25 cal/s |
| 0.001 kW | 0.00134 HP | 1 J/s | 0.239 cal/s |
| 0.004184 kW | 0.0056 HP | 4.184 J/s | 1 cal/s |
⚡ Electricity
Domestic consumption, electric vehicles, energy efficiency, and billing calculations.
Average home
Consumes ~1.2 kW per hour
Electric car
Tesla Model 3: ~15 kWh/100km
LED bulb
10W = 0.01 kW consumption
🏭 Industry
Heavy machinery, industrial motors, equipment specifications, and performance.
Locomotive
6,000-9,000 HP power
Commercial aircraft
Boeing 747: ~140,000 HP
Tower crane
20-40 HP main motor
🍎 Nutrition
Energy content of food, diets, metabolism, and caloric expenditure.
Hamburger
~540 kcal (540,000 cal)
Running 1 hour
Burns ~600 kcal
Glass of milk
~150 kcal energy
🔬 Physics
Scientific experiments, chemical bonds, nuclear energy, and thermodynamics.
Chemical bond
1-10 eV (~10⁻¹⁸ J)
Solar energy
1,361 W/m² in space
TNT (1 kg)
4.6 MJ of energy