Convert kilojoules to kilocalories
1 kJ = 0.239005736138 kcal — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.239 005 736 138kcal
As a fraction: 125/523
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1 kJ = 0.239005736138 kcal
Show this value in all 39 energy & work units
- Petajoules PJ 1e-12
- Terajoules TJ 1e-9
- Gigajoules GJ 0.000 001
- Megajoules MJ 0.001
- Kilojoules kJ 1
- Joules J 1000
- Millijoules mJ 1 000 000
- Microjoules µJ 1 000 000 000
- Nanojoules nJ 1 000 000 000 000
- Watt-hours Wh 0.277 777 777 778
- Kilowatt-hours kWh 0.000 277 777 777 778
- Megawatt-hours MWh 0.000 000 277 777 777 778
- Gigawatt-hours GWh 2.77777777778e-10
- Terawatt-hours TWh 2.77777777778e-13
- Calorie (thermochemical)s cal 239.005 736 138
- Kilocalories kcal 0.239 005 736 138
- Calorie (IT)s cal (IT) 238.845 896 627
- Kilocalorie (IT)s kcal (IT) 0.238 845 896 627
- British thermal units BTU 0.947 817 120 313
- BTU (thermochemical)s BTU (th) 0.948 451 652 677
- Million BTUs MMBTU 0.000 000 947 817 120 313
- Therm (US)s thm 0.000 009 480 434 279 73
- Therm (EC)s thm (EC) 0.000 009 478 169 879 13
- Electronvolts eV 6.24150907446e+21
- Kiloelectronvolts keV 6.24150907446e+18
- Megaelectronvolts MeV 6 241 509 074 460 000
- Gigaelectronvolts GeV 6 241 509 074 460
- Teraelectronvolts TeV 6 241 509 074.46
- Ergs erg 10 000 000 000
- Foot-pounds ft·lbf 737.562 149 277
- Inch-pounds in·lbf 8850.745 791 33
- Foot-poundals ft·pdl 23 730.360 404 2
- Horsepower-hours hp·h 0.000 372 506 135 999
- Tonne of TNTs t TNT 0.000 000 239 005 736 138
- Kiloton of TNTs kt TNT 2.39005736138e-10
- Megaton of TNTs Mt TNT 2.39005736138e-13
- Hartrees Eₕ 2.2937122784e+20
- Rydbergs Ry 4.58742455679e+20
- Quads quad 9.47817120313e-16
Every row is Kilojoule (kJ) converted through the joule, in exact rational arithmetic.
How to convert kilojoules to kilocalories
Multiply the number of kilojoules by 0.239005736138 to get kilocalories.
Kilocalorie: The Calorie on food labels — 1000 small calories.
Kilojoule to Kilocalorie conversion table
| Kilojoules (kJ) | Kilocalories (kcal) |
|---|---|
| 1 kJ | 0.239 005 74 |
| 2 kJ | 0.478 011 47 |
| 3 kJ | 0.717 017 21 |
| 5 kJ | 1.195 028 7 |
| 10 kJ | 2.390 057 4 |
| 20 kJ | 4.780 114 7 |
| 25 kJ | 5.975 143 4 |
| 50 kJ | 11.950 287 |
| 100 kJ | 23.900 574 |
| 250 kJ | 59.751 434 |
| 500 kJ | 119.502 87 |
| 1000 kJ | 239.005 74 |
Kilocalorie to Kilojoule conversion table
| Kilocalories (kcal) | Kilojoules (kJ) |
|---|---|
| 1 kcal | 4.184 |
| 2 kcal | 8.368 |
| 3 kcal | 12.552 |
| 5 kcal | 20.92 |
| 10 kcal | 41.84 |
| 20 kcal | 83.68 |
| 25 kcal | 104.6 |
| 50 kcal | 209.2 |
| 100 kcal | 418.4 |
| 250 kcal | 1046 |
| 500 kcal | 2092 |
| 1000 kcal | 4184 |
Frequently asked
How many kilocalories are in a kilojoule?
One kilojoule equals 0.2390057361 kilocalories (kJ → kcal). That figure is exact, not rounded.
How do you convert kilojoules to kilocalories?
Multiply the number of kilojoules by 0.239005736138 to get kilocalories.
What is 1 kcal in kilojoules?
One kilocalorie is 4.184 kilojoules.
What is 10 kJ in kcal?
10 kJ = 2.390 057 4 kcal.
What exactly is a kilocalorie?
The Calorie on food labels — 1000 small calories.