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Energy Converter

Convert joules, calories, kilowatt-hours, BTU, electronvolts and more.

Result

4.184kJ

1 Kilocalorie (food Calorie) = 4.184 Kilojoule

1 kcal in every unit
Joule4,184 J
Kilojoule4.184 kJ
Megajoule0.004184 MJ
Gigajoule0.000004184 GJ
Calorie (thermochemical)1,000 cal
Kilocalorie (food Calorie)1 kcal
Calorie (IT)999.3312315 cal_IT
Watt-hour1.162222222 Wh
Kilowatt-hour0.001162222222 kWh
Electronvolt2.611447397e+22 eV
British thermal unit (IT)3.965666831 BTU
Therm (US)0.00003966613703 thm
Foot-pound force3,085.960033 ft·lbf
Erg41,840,000,000 erg

Show the work

  1. Find the conversion factor from Kilocalorie (food Calorie) to Kilojoule

    1 kcal = 4,184 J · 1 kJ = 1,000 J

    factor = 4,184 ÷ 1,000 = 4.184 kJ per kcal

  2. Multiply by the factor: kcal cancels, leaving kJ

    kJ = kcal × (kJ per kcal)

    1 kcal × 4.184 kJ per kcal = 4.184 kJ

How it works

1 kcal = 4.184 kJ, so kJ = kcal × 4.184

Kilocalorie (food Calorie) to Kilojoule table

Kilocalorie (food Calorie)Kilojoule
1 kcal4.184 kJ
2 kcal8.368 kJ
5 kcal20.92 kJ
10 kcal41.84 kJ
20 kcal83.68 kJ
50 kcal209.2 kJ
100 kcal418.4 kJ
1,000 kcal4,184 kJ

Questions

How do I convert kilocalorie (food calorie) to kilojoule?
Multiply by 4.184. For example, 10 kcal = 41.84 kJ.
Which units does the energy converter support?
Joule (J), Kilojoule (kJ), Megajoule (MJ), Gigajoule (GJ), Calorie (thermochemical) (cal), Kilocalorie (food Calorie) (kcal), Calorie (IT) (cal_IT), Watt-hour (Wh), Kilowatt-hour (kWh), Electronvolt (eV), British thermal unit (IT) (BTU), Therm (US) (thm), Foot-pound force (ft·lbf), Erg (erg).

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