Kilojoule to calories (KJ to cal)

Kilojoule to Calories Calculator

Kilojoule (KJ) to Calories (cal & kcal) Conversion

There are two types of calories. Here are the formulas to convert energy from kilojoules to both small and large calories.

Conversion Formulas

The relationships between kilojoules and calories can be expressed as:

cal = KJ ร— 239.005736 kcal = KJ ร— 0.239005736

Where:

  • cal = Small calories
  • kcal = Large calories (food calories)
  • KJ = Kilojoules

Example Calculation

If you have an energy output of 100 KJ, the calculations would be:

cal = 100 KJ ร— 239.005736 โ‰ˆ 23900.5736 cal kcal = 100 KJ ร— 0.239005736 โ‰ˆ 23.9005736 kcal

What is a Kilojoule (KJ)?

A kilojoule (kJ) is a unit of energy in the International System of Units (SI). It is commonly used to measure energy in food and physical activities. One kilojoule is equal to 1,000 joules, which is the energy transferred when a force of one newton is applied over a distance of one meter.

What is a Small Calorie (cal)?

A small calorie (cal) is the energy needed to increase 1 gram of water by 1ยฐC at a pressure of 1 atmosphere.

What is a Large Calorie (kcal)?

A large calorie (kcal) is the energy needed to increase 1 kg of water by 1ยฐC at a pressure of 1 atmosphere. It is also known as a food calorie.

Kilojoules (kJ) to Calories (cal & kcal) Conversion Table

Formula: cal = kJ ร— 239.005736, kcal = kJ ร— 0.239005736

Kilojoules [kJ] Small Calories [cal] Large Calories [kcal]
1 kJ 239.01 cal 0.24 kcal
5 kJ 1195.06 cal 1.19 kcal
10 kJ 2389.01 cal 2.39 kcal
20 kJ 4778.02 cal 4.78 kcal
50 kJ 11945.05 cal 11.95 kcal
100 kJ 23890.10 cal 23.89 kcal

Author

  • Manish Kumar

    Manish holds a B.Tech in Electrical and Electronics Engineering (EEE) and an M.Tech in Power Systems, with over 10 years of experience in Metro Rail Systems, specializing in advanced rail infrastructure. He is also a NASM-certified fitness and nutrition coach with more than a decade of experience in weightlifting and fat loss coaching. With expertise in gym-based training, lifting techniques, and biomechanics, Manish combines his technical mindset with his passion for fitness.

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