Kilojoule to Megajoule

1 kJ = 0.001 MJ

Value

From

Precision & format

Significant figures

Notation

1 kJ equals

0.001MJ

All 21 units

JouleJ
1,000
KilojoulekJ
1
MegajouleMJ
0.001
GigajouleGJ
0.000001
MillijoulemJ
1,000,000
Calorie (thermochemical)cal
exactly 4.184 J
239.0057361
Kilocalorie (thermochemical)kcal
food Calorie
0.2390057361
Calorie (IT)cal (IT)
International Table
238.8458966
Kilocalorie (IT)kcal (IT)
0.2388458966
Watt-hourWh
0.2777777778
Kilowatt-hourkWh
0.0002777777778
Megawatt-hourMWh
2.777777778 × 10⁻⁷
BTU (IT)BTU
International Table
0.9478171203
BTU (thermochemical)BTU (th)
0.9484514148
Therm (US)thm
100 000 BTU
0.00000948043428
Foot-poundft·lbf
737.5621493
Ergerg
10,000,000,000
ElectronvolteV
6.241509074 × 10²¹
KiloelectronvoltkeV
6.241509074 × 10¹⁸
MegaelectronvoltMeV
6.241509074 × 10¹⁵
Tonne of oil equivalenttoe
2.388458966 × 10⁻⁸

Kilojoule to Megajoule table

Common Kilojoule values converted to Megajoule
Kilojoule (kJ)	Megajoule (MJ)
1	0.001
2	0.002
5	0.005
10	0.01
20	0.02
50	0.05
100	0.1
250	0.25
500	0.5
1,000	1

How the conversion works

Multiply the kilojoule figure by 0.001 to get megajoule. 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 MJ = 1,000 kJ — see megajoule to kilojoule.

See all 21 energy units →