Kilojoules to Kilocalories Converter

Convert energy from kilojoules to kilocalories. Enter kilojoules and calculate.

Approximate nutritional conversion.

Examples

  • 100 kJ ⇒ 23.90 kcal
  • 250 kJ ⇒ 59.77 kcal

FAQ

What is a kilocalorie?

A kilocalorie is the energy needed to raise one kilogram of water by one degree Celsius.

How many kilojoules are in a kilocalorie?

One kilocalorie equals 4.184 kilojoules.

Is the conversion linear?

Yes, energy scales linearly between kilojoules and kilocalories.

Where is this conversion used?

Nutrition labels often list energy in both kilojoules and kilocalories.

Additional Information

  • Learn why nutrition labels still reference joules by exploring our [Joule (J) SI overview](/units-and-measures/the-joule-si-unit-of-energy/).