kJ

What is a Kilojoule?

Definition

A kilojoule (kJ) is a unit of energy equal to 1,000 joules.

Popular Kilojoule Conversions

Most common conversions from Kilojoules

1 kJ = 1,000 J Kilojoule to Joules 1 kJ = 239.0057 cal Kilojoule to Calories 1 kJ = 0.239006 kcal Kilojoule to Kilocalories 1 kJ = 0.277778 Wh Kilojoule to Watt Hours 1 kJ = 0.0002777778 kWh Kilojoule to Kilowatt Hours 1 kJ = 6,241,509,074,460,762,701,824 eV Kilojoule to Electronvolts

History

The kilojoule is commonly used for food energy in countries using the metric system, often appearing alongside kilocalories on nutrition labels.

Common Uses

Food and nutrition labels
Scientific calculations
Heating and cooling energy
Exercise energy expenditure

Fun Facts

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An apple contains about 220 kJ of energy

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1 kJ equals about 0.239 kilocalories

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Australia uses kilojoules on food labels

All Kilojoule Conversions

Kilojoules to Joules kJ → J Kilojoules to Calories kJ → cal Kilojoules to Kilocalories kJ → kcal Kilojoules to Watt Hours kJ → Wh Kilojoules to Kilowatt Hours kJ → kWh Kilojoules to Electronvolts kJ → eV Kilojoules to BTUs kJ → BTU Kilojoules to Therms kJ → thm