Calculate energy in joules from work, kinetic energy, power, electrical energy, or thermal energy. Perfect for physics, engineering, and energy analysis applications.
Comprehensive energy calculations with detailed explanations
Calculate work done using force and distance
Calculate kinetic energy from mass and velocity
Calculate energy from power and time
Convert between joules, watts, calories, and BTU
Understanding energy calculations and conversions
Choose from work-energy, kinetic energy, power-time, electrical energy, or thermal energy.
Input the required values such as force, distance, mass, velocity, power, or time.
Receive energy in joules, watts, calories, BTU, and other units with step-by-step calculations.
W = F × d
KE = ½mv²
E = P × t
E = V × I × t
Common energy calculations and their practical applications
Energy: 50 Joules
Energy: 25 Joules
Energy: 360,000 Joules
Energy: 41,840 Joules
Common questions about energy calculations and joules
A joule (J) is the SI unit of energy and work. It's defined as the energy transferred when a force of one newton acts over a distance of one meter. 1 joule = 1 newton-meter.
Work is calculated using the formula W = F × d, where F is the force in newtons and d is the distance in meters. The result is in joules.
Kinetic energy is calculated using KE = ½mv², where m is mass in kilograms and v is velocity in meters per second. The result is in joules.
Watts measure power (energy per unit time). 1 watt = 1 joule per second. To convert joules to watts, divide by time in seconds.
To convert joules to calories, divide by 4.184. 1 calorie = 4.184 joules. This is the thermochemical calorie used in physics and chemistry.
Electrical energy is calculated using E = V × I × t, where V is voltage in volts, I is current in amperes, and t is time in seconds. The result is in joules.
Thermal energy is calculated using Q = mcΔT, where m is mass in kg, c is specific heat capacity in J/kg·°C, and ΔT is temperature change in °C.
Joules are used in physics, engineering, chemistry, and everyday life to measure energy in work, heat, electricity, and motion calculations.
To convert joules to BTU, divide by 1055.06. 1 BTU = 1055.06 joules. BTU (British Thermal Unit) is commonly used in heating and cooling applications.
1 joule = 6.242 × 10¹⁸ electron volts (eV). Electron volts are commonly used in atomic and particle physics for very small energy measurements.
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