Calorie Unit Conversion Tool

Calorie Conversion

Real-time Conversion(Enter any value to automatically display all units)

Common Calorie References

Item Kilocalorie (kcal) Kilojoule (kJ) Joule (J)
A Bowl of White Rice (150g) ~174 ~728 ~728,000
An Apple (200g) ~104 ~435 ~435,000
A Banana (100g) ~89 ~372 ~372,000
An Egg (50g) ~72 ~301 ~301,000
100g Chicken Breast ~165 ~690 ~690,000
A Glass of Milk (250ml) ~150 ~628 ~628,000
A Slice of Bread (30g) ~80 ~335 ~335,000
A Can of Cola (330ml) ~139 ~582 ~582,000
Recommended Daily Intake for Adult Men ~2500 ~10,460 ~10,460,000
Recommended Daily Intake for Adult Women ~2000 ~8,368 ~8,368,000
Running1Calories Burned per Hour (60kg) ~480 ~2,008 ~2,008,000
Brisk Walking1Calories Burned per Hour (60kg) ~240 ~1,004 ~1,004,000

Conversion Ratios

Basic Relationships(Based on Joules)

1 Kilojoule (kJ) = 1000 Joule (J)
1 Calorie (cal) = 4.184 Joule (J)
1 Kilocalorie (kcal) = 4184 Joule (J) = 1000 Calorie
1 Watt-hour (Wh) = 3600 Joule (J)
1 Kilowatt-hour (kWh) = 3,600,000 Joule (J)
1 British Thermal Unit (BTU) ≈ 1055.06 Joule (J)
1 Foot-pound (ft·lb) ≈ 1.35582 Joule (J)
1 Erg (erg) = 1×10⁻⁷ Joule (J)

Common Conversions

1 Kilocalorie (kcal) = 4.184 Kilojoule (kJ)
1 Kilojoule (kJ) ≈ 0.239 Kilocalorie (kcal)
1 Kilowatt-hour (kWh) = 860 Kilocalorie (kcal)
1 Kilowatt-hour (kWh) = 3412.14 British Thermal Unit (BTU)

Food Nutrition Label Conversions

Chinese labels usually use:Kilojoule (kJ)
International labels usually use:Kilocalorie (kcal) or Calorie (Calories)
nutritional labels "Calorie" actually refers to "Kilocalorie (kcal)"

batch conversion(one value per line,format:value unit)

about calorie units:

Joule (J):the standard unit of energy in the International System of Units,1joule equals1a force in newtons moves an object in the direction of the force1work done by a meter。

Calorie (cal):Will1Gram of water at1Increase under standard atmospheric pressure1heat required per degree Celsius。commonly used in nutrition"Calorie"actually refers to"Kilocalorie"(kcal)。

Kilocalorie (kcal):Also called kilocalories,1Kilocalorie = 1000Calorie。On food packaging"Calorie"(UppercaseC)Refers to kilocalories。

Watt-hour (Wh):Unit of electrical energy,1Watt-hour is1Power in watts maintained1Energy consumed per hour,Equals3600Joule。

British Thermal Unit (BTU):Imperial unit,Will1Pound of water raised1Heat required per degree Fahrenheit,Widely used in air conditioning cooling capacity and other fields。

Nutrition label tips:Chinese food nutrition labels mainly use kilojoules(kJ),Kilocalories are commonly used internationally(kcal)。Pay attention when converting:1Kilocalorie ≈ 4.184Kilojoule。