Joule (J)

A unit of energy. 1 J = 1 J, the base unit used internally for energy.

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Convert from joules

• to kilojoules
• to calories
• to kilocalories
• to watt-hours
• to kilowatt-hours
• to BTUs

Convert to joules

• from kilojoules
• from calories
• from kilocalories
• from watt-hours
• from kilowatt-hours
• from BTUs

More in Energy converters or the full unit directory.