Kilocalorie (thermochemical) to Kilojoule

1 kcal = 4.184 kJ

Value

From

Precision & format

Significant figures

Notation

1 kcal equals

4.184kJ

All 21 units

JouleJ
4,184
KilojoulekJ
4.184
MegajouleMJ
0.004184
GigajouleGJ
0.000004184
MillijoulemJ
4,184,000
Calorie (thermochemical)cal
exactly 4.184 J
1,000
Kilocalorie (thermochemical)kcal
food Calorie
1
Calorie (IT)cal (IT)
International Table
999.3312315
Kilocalorie (IT)kcal (IT)
0.9993312315
Watt-hourWh
1.162222222
Kilowatt-hourkWh
0.001162222222
Megawatt-hourMWh
0.000001162222222
BTU (IT)BTU
International Table
3.965666831
BTU (thermochemical)BTU (th)
3.96832072
Therm (US)thm
100 000 BTU
0.00003966613703
Foot-poundft·lbf
3,085.960033
Ergerg
41,840,000,000
ElectronvolteV
2.611447397 × 10²²
KiloelectronvoltkeV
2.611447397 × 10¹⁹
MegaelectronvoltMeV
2.611447397 × 10¹⁶
Tonne of oil equivalenttoe
9.993312315 × 10⁻⁸

Kilocalorie (thermochemical) to Kilojoule table

Common Kilocalorie (thermochemical) values converted to Kilojoule
Kilocalorie (thermochemical) (kcal)	Kilojoule (kJ)
1	4.184
2	8.368
5	20.92
10	41.84
20	83.68
50	209.2
100	418.4
250	1,046
500	2,092
1,000	4,184

How the conversion works

Multiply the kilocalorie (thermochemical) figure by 4.184 to get kilojoule. Every factor on this site is anchored to the SI base unit for energy, so the same number is used everywhere it appears.

Going the other way, 1 kJ = 0.23900574 kcal — see kilojoule to kilocalorie (thermochemical).

See all 21 energy units →