kilojoule kJ
1000 J. Food labels in some countries.
Quick convert — kilojoule to popular units
Live converter, three directions. Type any value to update all three.
kilojoule
joule
1 kJ = 1,000J
kilojoule
calorie
1 kJ = 239.0057cal
kilojoule
kilocalorie
1 kJ = 0.239kcal
Conversion table — kilojoule to every Energy unit
All values for 1 kJ (forward) and 1 reverse unit → {symbol}.
| To / From | 1 kJ = | 1 to-unit = |
|---|---|---|
| joule (J) | 1,000 J | 0.001 kJ |
| calorie (cal) | 239.00573614 cal | 0.004184 kJ |
| kilocalorie (kcal) | 0.23900574 kcal | 4.184 kJ |
| watt-hour (Wh) | 0.27777778 Wh | 3.6 kJ |
| kilowatt-hour (kWh) | 0.00027778 kWh | 3,600 kJ |
| British thermal unit (BTU) | 0.94781712 BTU | 1.05505585 kJ |
| electronvolt (eV) | 6.241509e+21 eV | 1.602177e-22 kJ |
| foot-pound (ft·lb) | 737.56214928 ft·lb | 0.00135582 kJ |
| therm (thm) | 9.478171e-6 thm | 105,505.585262 kJ |
Frequently Asked Questions
What does kJ stand for?
kilojoule (kJ) is a unit of Energy.
How many kJ are in 1 J?
1 J = 1,000 kJ, so 1 kJ = 0.001 J.
Is this the SI base unit?
No. kilojoule is one of several units in the Energy category. The SI base is J.
Common conversions from kilojoule
#1
kilojoule (kJ) → joule (J)
Convert kilojoule (kJ) to joule.
#2kilojoule (kJ) → calorie (cal)
Convert kilojoule (kJ) to calorie.
#3kilojoule (kJ) → kilocalorie (kcal)
Convert kilojoule (kJ) to kilocalorie.
#4kilojoule (kJ) → watt hour (Wh)
Convert kilojoule (kJ) to watt hour.
#5kilojoule (kJ) → kilowatt hour (kWh)
Convert kilojoule (kJ) to kilowatt hour.
#6kilojoule (kJ) → btu (BTU)
Convert kilojoule (kJ) to btu.
#7kilojoule (kJ) → electronvolt (eV)
Convert kilojoule (kJ) to electronvolt.
#8kilojoule (kJ) → foot pound (ft·lb)
Convert kilojoule (kJ) to foot pound.