How many kilocalories are in 1 kilojoule?

1 kilojoule equals 0.239006 kcal.

How do I convert kilocalories back to kilojoules?

Use the reverse converter: 1 kilocalorie equals 4.184 kJ.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert kilojoules to kilocalories, multiply the value by 0.239005736.

kcal = kJ × 0.239005736

90 kJ × 0.239005736 = 21.51 kcal

Kilojoule (kJ): 1,000 joules; used for food energy in Australia, New Zealand and much of Europe.
Kilocalorie (kcal): The "food calorie" on nutrition labels. Equal to 4,184 joules.

How do I convert kilojoules to kilocalories?: To convert kilojoules to kilocalories, multiply the value by 0.239005736.
How many kilocalories are in 1 kilojoule?: 1 kilojoule equals 0.239006 kcal.
How many kilocalories are in 10 kilojoules?: 10 kJ equals 2.39006 kcal.
How do I convert kilocalories back to kilojoules?: Use the reverse converter: 1 kilocalorie equals 4.184 kJ.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.