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Kilojoules to Kilocalories Converter

Convert kilojoules to kilocalories and kcal to kJ instantly. Bidirectional energy converter with formula and common values.

kJ

Kilocalories

298.7575

kcal

1250 kJ = 298.7575 kcal

kcal = kJ × 0.239006

Kilojoules to Kilocalories: 1 kJ equals 0.239006 kcal. To convert kilojoules to kilocalories, multiply by 0.239006 (kcal = kJ × 0.239006). For example, 10 kJ = 2.39006 kcal.

How to Convert Kilojoules to Kilocalories

To convert from kilojoules to kilocalories, multiply the value by 0.239006. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Kilojoules to Kilocalories: kcal = kJ × 0.239006
  • Kilocalories to Kilojoules: kJ = kcal ÷ 0.239006

Kilojoules to Kilocalories Conversion Chart

Kilojoules (kJ)Kilocalories (kcal)
0.10.023901
0.250.059751
0.50.119503
10.239006
20.478012
30.717018
51.19503
102.39006
204.78012
255.97515
5011.9503
10023.9006
25059.7515
1000239.006

Understanding the Units

What is a Kilojoule?

A kilojoule equals 1,000 joules.

Common contexts: nutrition labeling (outside US), mechanical engineering.

What is a Kilocalorie?

A kilocalorie (kcal) equals 1,000 small calories, or 4,184 joules. In nutrition, the food "Calorie" (capital C) refers to the kilocalorie.

Common contexts: nutrition (US), metabolism, food labeling.

Real-World Reference Points

Item Kilojoules (kJ) Kilocalories (kcal)
Slice of bread334.719680
Banana (medium)439.3195105
Daily intake (adult)8367.99082000

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FAQ

How many kilocalories are in one kilojoule?

One kilojoule equals approximately 0.239006 kilocalories. It takes about 4.184 kJ to equal one kcal.

How do I convert kJ to kcal?

Divide the kJ value by 4.184 (or multiply by 0.239006). For example, 1,500 kJ ÷ 4.184 = 358.5 kcal.

How do I read food labels with kJ?

Divide the kilojoule value by 4.184 to get the familiar kilocalorie (Calorie) value. A food item listing 840 kJ contains about 200 kcal.

Which countries use kJ on food labels?

Australia, New Zealand, and EU member states require kilojoules as the primary energy unit on food labels. Many also show kilocalories as a secondary value.

How many kilocalories are in 1 kilojoul?

1 kJ equals 0.239006 kcal.

How do you convert kilojoules to kilocalories?

Multiply the kilojoul value by 0.239006. Formula: kcal = kJ × 0.239006.

How many kilocalories are in 5 kilojoules?

5 kJ = 1.19503 kcal.

How do you convert kilocalories back to kilojoules?

Use the inverse formula: kJ = kcal ÷ 0.239006. For example, 1 kcal = 4.183995 kJ.

What is the difference between Kilojoul and Kilocalory?

A kilojoule equals 1,000 joules. A kilocalorie (kcal) equals 1,000 small calories, or 4,184 joules. In nutrition, the food "Calorie" (capital C) refers to the kilocalorie.