Kilojoule to Calorie Converter

Convert kilojoules to calories instantly with our accurate and easy-to-use conversion tool.

kJ
Result
0cal

Calorie

Conversion Formula

Calorie = Kilojoule × 239.005736

Where:

  • kJ = Kilojoule
  • cal = Calorie

About Kilojoule

The kilojoule (kJ) is a unit of energyin the metric system of measurement.

About Calorie

The calorie (cal) is a unit of energyin the metric system of measurement.

How to Convert Kilojoule to Calorie

To convert from kilojoules to calories, use our converter above. Simply enter the value in kilojoulesand get instant results in calories.

Quick Reference:

  • 1 kJ = 239.005736 cal
  • 1 cal = 0.004184 kJ

Common Kilojoule to Calorie Conversions

1 kJ
= 239.01 cal
5 kJ
= 1195.03 cal
10 kJ
= 2390.06 cal
25 kJ
= 5975.14 cal
50 kJ
= 11950.29 cal
100 kJ
= 23900.57 cal

Conversion Reference Table

Kilojoule (kJ)Calorie (cal)
1239.0057
2478.0115
3717.0172
4956.0229
51,195.0287
102,390.0574
153,585.086
204,780.1147
255,975.1434
5011,950.2868
7517,925.4302
10023,900.5736
25059,751.434
500119,502.8681
1,000239,005.7361

Quick reference table showing common kilojoules to calories conversions.

Real-World Energy Conversions

Electricity Bills

Understanding your power consumption in kilowatt-hours (kWh). A 100W bulb running for 10 hours uses 1 kWh. Convert kWh to joules or BTU for energy calculations.

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Food and Nutrition

Converting between Calories (kcal) and joules for nutritional information. Food energy content is measured in Calories, with 1 Calorie equaling approximately 4.2 kilojoules.

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Heating and Cooling

HVAC systems use BTU (British Thermal Units) to measure heating/cooling capacity. Converting BTU to watts or joules helps compare different systems.

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Physics and Science

Scientific calculations use joules as the SI unit of energy. Converting between joules, kilojoules, and megajoules for physics problems and research.

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Battery Capacity

Batteries are rated in watt-hours (Wh) or milliamp-hours (mAh). Converting between units helps compare battery performance and runtime.

Fuel Energy Content

Fuels are compared using energy content per unit mass or volume. Converting between joules per gram, BTU per pound, or kWh per liter.

Energy Conversion FAQs