Energy converter

kcal, kJ, kWh, BTU and more, with exact factors.

2,000 kcal =

8,368 kJ

2,000 kilocalorie = 8,368 kilojoule.

Conversion factor1 kcal = 4.184 kJ

2,000 kcal in every unit

Unit	Value
Joule	8,368,000 J
Kilojoule	8,368 kJ
Calorie	2,000,000 cal
Kilocalorie	2,000 kcal
Watt-hour	2,324.444444 Wh
Kilowatt-hour	2.324444444 kWh
BTU	7,931.333663 BTU

Energy conversion factors

The thermochemical calorie is 4.184 J, so 1 kcal = 4.184 kJ. Food-label "Calories" are kilocalories (kcal). A kilowatt-hour (kWh), the unit on your electric bill, is 3,600,000 J.

The international BTU, used for heating and air conditioning, is 1,055.05585262 J. Example: 2,000 kcal = 2,000 × 4.184 = 8,368 kJ.

Conversion table: kcal ↔ kJ

kcal	kJ	kJ	kcal
1 kcal	4.184 kJ	1 kJ	0.239006 kcal
2 kcal	8.368 kJ	2 kJ	0.478011 kcal
3 kcal	12.552 kJ	3 kJ	0.717017 kcal
5 kcal	20.92 kJ	5 kJ	1.19503 kcal
10 kcal	41.84 kJ	10 kJ	2.39006 kcal
20 kcal	83.68 kJ	20 kJ	4.78011 kcal
25 kcal	104.6 kJ	25 kJ	5.97514 kcal
50 kcal	209.2 kJ	50 kJ	11.9503 kcal
100 kcal	418.4 kJ	100 kJ	23.9006 kcal
250 kcal	1,046 kJ	250 kJ	59.7514 kcal
500 kcal	2,092 kJ	500 kJ	119.503 kcal
1,000 kcal	4,184 kJ	1,000 kJ	239.006 kcal

Frequently asked questions

Are Calories and kcal the same?

On food labels, a Calorie (capital C) is a kilocalorie. In physics, 1 kcal = 1,000 cal.

How many kJ are in 1 kcal?

4.184 kJ.

What is 1 kWh in BTU?

About 3,412 BTU.

Energy conversion factors

Conversion table: kcal ↔ kJ

Frequently asked questions

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