Kilojoules to Joules conversion

What is kilojoules?

Kilojoules (kJ) are a unit of energy, specifically a measure of the amount of energy required to raise the temperature of 1 kilogram of water by 1 degree Celsius.

In other words, it's a way to quantify the amount of energy that something contains or releases. Kilojoules are commonly used in science, technology, and everyday life to express the energy content of various things, such as:

• Foods: The energy content of foods is often listed in kilojoules (kJ) on nutrition labels.
• Electrical appliances: The power consumption of devices like refrigerators or televisions is sometimes expressed in kilowatts (kW), which can be converted to kilojoules per second.
• Chemical reactions: In chemistry, kilojoules are used to express the energy released or absorbed during chemical reactions.

To put it into perspective:

• A typical snack bar might have around 400-600 kJ of energy content
• A standard household light bulb uses about 60 W (which is equivalent to approximately 360 kJ per hour)
• The kinetic energy of a human running at a moderate pace is around 500-700 kJ per minute

So, kilojoules are simply a way to measure and express the amount of energy in various forms.

What is Joules?

Joules measures energy. It is part of SI units system. Symbol for inches is $J$.

A Joule is commonly defined as amount of work done when a force of 1 newton displaces a mass through a distance of 1 metre in the direction of the force applied.

$$1\ J = 1\ kg*m^2/s^{2} = 1\ N*m$$

$$1\ J = 1\ Pa*m^3 = 1\ W*s = 1\ C*V$$

Where $J$ - joule
$kg$ - kilogram
$m$ - metre
$s$ - second
$N$ - newton
$Pa$ - pascal
$W$ - watt
$C$ - coulomb
$V$ - volt

Wiki page for Joules