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Kilocalories to Megajoules Converter

Convert kilocalories to megajoules and back instantly with formula and common values.

kcal

Megajoules

0.3933

MJ

94 kcal = 0.3933 MJ

MJ = kcal × 0.004184

Kilocalories to Megajoules: 1 kcal equals 0.004184 MJ. To convert kilocalories to megajoules, multiply by 0.004184 (MJ = kcal × 0.004184). For example, 10 kcal = 0.04184 MJ.

How to Convert Kilocalories to Megajoules

To convert from kilocalories to megajoules, multiply the value by 0.004184. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Kilocalories to Megajoules: MJ = kcal × 0.004184
  • Megajoules to Kilocalories: kcal = MJ ÷ 0.004184

Kilocalories to Megajoules Conversion Chart

Kilocalories (kcal)Megajoules (MJ)
0.10.000418
0.250.001046
0.50.002092
10.004184
20.008368
30.012552
50.02092
100.04184
200.08368
250.1046
500.2092
1000.4184
2501.046
10004.184

Understanding the Units

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.

What is a Megajoule?

A megajoule equals one million joules (10⁶ J).

Common contexts: fuel energy content, industrial processes.

Real-World Reference Points

Item Kilocalories (kcal) Megajoules (MJ)
Slice of bread800.3347
Banana (medium)1050.4393
Daily intake (adult)20008.368

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FAQ

How do I convert kilocalories to megajoules?

Multiply by 0.004184. For example, 94 kcal × 0.004184 = 0.3933 MJ.

What is the formula for kilocalories to megajoules?

The formula is: MJ = kcal × 0.004184.

How many megajoules are in one kilocalorie?

One kilocalorie equals 0.0042 megajoules.

How many megajoules are in 1 kilocalory?

1 kcal equals 0.004184 MJ.

How do you convert kilocalories to megajoules?

Multiply the kilocalory value by 0.004184. Formula: MJ = kcal × 0.004184.

How many megajoules are in 5 kilocalories?

5 kcal = 0.02092 MJ.

How do you convert megajoules back to kilocalories?

Use the inverse formula: kcal = MJ ÷ 0.004184. For example, 1 MJ = 239.005736 kcal.

What is the difference between Kilocalory and Megajoul?

A kilocalorie (kcal) equals 1,000 small calories, or 4,184 joules. In nutrition, the food "Calorie" (capital C) refers to the kilocalorie. A megajoule equals one million joules (10⁶ J).