How many calories in 1000 kJ?

1,000 kJ equals approximately 239 calories (kcal). To convert, divide the kilojoule value by 4.184.

Are kilojoules and calories the same thing?

They both measure energy, but they are different units. 1 calorie (kcal) = 4.184 kilojoules (kJ). Australian food labels use kilojoules, while many international resources use calories.

Why does Australia use kilojoules instead of calories?

Australia adopted the metric system in the 1970s, which includes kilojoules as the standard unit of energy. Kilojoules are the SI (International System) unit, while calories are an older unit still commonly used in the US and UK.

How many kJ is 2000 calories?

2,000 calories equals approximately 8,368 kJ. This is close to the average daily energy recommendation of 8,700 kJ for Australian adults.

Kilojoules to Calories Converter

Quickly convert kilojoules to calories. Australian food labels show energy in kilojoules - use this converter to see the equivalent in calories (kilocalories).

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Kilojoules (kJ)

Results update as you type. 1 kcal = 4.184 kJ.

How It Works

To convert kilojoules to calories, divide by 4.184. So 1,000 kJ = approximately 239 calories. The conversion factor is: 1 kcal = 4.184 kJ.

Quick Reference

Kilojoules (kJ)	Calories (kcal)
500	120
1,000	239
2,000	478
3,000	717
4,000	956
5,000	1,195
6,000	1,434
7,000	1,673
8,000	1,912
8,700 (Aus. RDI)	2,079
9,000	2,151
10,000	2,390

Frequently Asked Questions

How many calories in 1000 kJ?: 1,000 kJ equals approximately 239 calories (kcal). To convert, divide the kilojoule value by 4.184.
Are kilojoules and calories the same thing?: They both measure energy, but they are different units. 1 calorie (kcal) = 4.184 kilojoules (kJ). Australian food labels use kilojoules, while many international resources use calories.
Why does Australia use kilojoules instead of calories?: Australia adopted the metric system in the 1970s, which includes kilojoules as the standard unit of energy. Kilojoules are the SI (International System) unit, while calories are an older unit still commonly used in the US and UK.
How many kJ is 2000 calories?: 2,000 calories equals approximately 8,368 kJ. This is close to the average daily energy recommendation of 8,700 kJ for Australian adults.

How This Is Calculated

kcal = kJ ÷ 4.184

kcal: = energy in kilocalories (food calories)
kJ: = energy in kilojoules (from food label)
4.184: = thermochemical conversion factor

Quick shortcut: divide kJ by 4.2 for a close approximation. The 8,700 kJ reference value on Australian food labels equals approximately 2,079 kcal.

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Disclaimer

This calculator provides estimates for informational purposes only and should not be considered medical advice. Individual results may vary based on factors not captured by these formulas. Consult a healthcare professional before making changes to your diet or exercise routine, especially if you have any existing health conditions.