kJ, Energy

The joule (symbol: J) is the SI unit of energy, which is defined as the potential to do work. The joule has base units of kg·m²/s² = N·m. The base unit conversion can be remembered using the equation E = mc2, where E is in joules, m is in kilograms, and c is the speed of light in meters per second. Read more >>

I want to convert:

Metric

kWh
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MJ
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kJ
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J
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Ws
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eV
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British/American

Quad
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Therm
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British thermal unit
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Foot-pound
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Other

kcal
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cal
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Thermie
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Broadly speaking, energy refers to "the potential for causing a change". There are different forms of energy. Many forms of energy refer to changes in movement of objects or their potential for causing other kinds of change. Hence, in the real world, energy can be viewed as the ability to perform an action. Read more >>