Kilocalories to Kilojoules
1 kcal equals 4.18 kJ.
View table →Nutrition & Heat (kcal / cal / BTU)
Kilojoules to Kilocalories
1 kJ equals 0.239 kcal.
View table →Calories to Joules
1 cal equals 4.18 J.
View table →Joules to Calories
1 J equals 0.239 cal.
View table →Kilowatt-hours to BTU
1 kWh equals 3412.13 BTU.
View table →BTU to Kilowatt-hours
1 BTU equals 0.000293 kWh.
View table →Kilocalories to Calories
1 kcal equals 1000 cal.
View table →BTU to Kilojoules
1 BTU equals 1.06 kJ.
View table →Electricity & SI (J / kJ / MJ / Wh / kWh)
Kilowatt-hours to Joules
1 kWh equals 3600000 J.
View table →Joules to Kilowatt-hours
1 J equals 0.000000278 kWh.
View table →Watt-hours to Kilowatt-hours
1 Wh equals 0.001 kWh.
View table →Kilowatt-hours to Watt-hours
1 kWh equals 1000 Wh.
View table →Kilojoules to Joules
1 kJ equals 1000 J.
View table →Joules to Kilojoules
1 J equals 0.001 kJ.
View table →Megajoules to Kilowatt-hours
1 MJ equals 0.278 kWh.
View table →Kilowatt-hours to Megajoules
1 kWh equals 3.6 MJ.
View table →Frequently Asked Questions
How many kJ are in 1 kcal?
One kilocalorie (kcal) equals exactly 4.184 kJ. Going the other way, 1 kJ is about 0.239 kcal.
How many megajoules are in 1 kilowatt-hour?
One kilowatt-hour (kWh) equals exactly 3.6 MJ, or 3,600,000 joules.
Are calories and kilocalories the same?
No. One kilocalorie (kcal) equals 1000 small calories (cal). The kcal is the food-label “Calorie” and is 4184 joules; the small cal is 4.184 joules.
What is a joule?
The joule (J) is the SI unit of energy. 1 kJ is 1,000 J and 1 MJ is 1,000,000 J. The kWh, kcal, and BTU are older or application-specific units.
Are these conversions exact?
Yes. Energy conversions are exact; the values are only rounded for readability.