Convert gigajoules to kilocalories
1 GJ = 239005.736138 kcal — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
239 005.736 138kcal
As a fraction: 125000000/523
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1 GJ = 239005.736138 kcal
Show this value in all 39 energy & work units
- Petajoules PJ 0.000 001
- Terajoules TJ 0.001
- Gigajoules GJ 1
- Megajoules MJ 1000
- Kilojoules kJ 1 000 000
- Joules J 1 000 000 000
- Millijoules mJ 1 000 000 000 000
- Microjoules µJ 1 000 000 000 000 000
- Nanojoules nJ 1e+18
- Watt-hours Wh 277 777.777 778
- Kilowatt-hours kWh 277.777 777 778
- Megawatt-hours MWh 0.277 777 777 778
- Gigawatt-hours GWh 0.000 277 777 777 778
- Terawatt-hours TWh 0.000 000 277 777 777 778
- Calorie (thermochemical)s cal 239 005 736.138
- Kilocalories kcal 239 005.736 138
- Calorie (IT)s cal (IT) 238 845 896.627
- Kilocalorie (IT)s kcal (IT) 238 845.896 627
- British thermal units BTU 947 817.120 313
- BTU (thermochemical)s BTU (th) 948 451.652 677
- Million BTUs MMBTU 0.947 817 120 313
- Therm (US)s thm 9.480 434 279 73
- Therm (EC)s thm (EC) 9.478 169 879 13
- Electronvolts eV 6.24150907446e+27
- Kiloelectronvolts keV 6.24150907446e+24
- Megaelectronvolts MeV 6.24150907446e+21
- Gigaelectronvolts GeV 6.24150907446e+18
- Teraelectronvolts TeV 6 241 509 074 460 000
- Ergs erg 1e+16
- Foot-pounds ft·lbf 737 562 149.277
- Inch-pounds in·lbf 8 850 745 791.33
- Foot-poundals ft·pdl 23 730 360 404.2
- Horsepower-hours hp·h 372.506 135 999
- Tonne of TNTs t TNT 0.239 005 736 138
- Kiloton of TNTs kt TNT 0.000 239 005 736 138
- Megaton of TNTs Mt TNT 0.000 000 239 005 736 138
- Hartrees Eₕ 2.2937122784e+26
- Rydbergs Ry 4.58742455679e+26
- Quads quad 9.47817120313e-10
Every row is Gigajoule (GJ) converted through the joule, in exact rational arithmetic.
How to convert gigajoules to kilocalories
Multiply the number of gigajoules by 239005.736138 to get kilocalories.
Kilocalorie: The Calorie on food labels — 1000 small calories.
Gigajoule to Kilocalorie conversion table
| Gigajoules (GJ) | Kilocalories (kcal) |
|---|---|
| 1 GJ | 239 005.74 |
| 2 GJ | 478 011.47 |
| 3 GJ | 717 017.21 |
| 5 GJ | 1 195 028.7 |
| 10 GJ | 2 390 057.4 |
| 20 GJ | 4 780 114.7 |
| 25 GJ | 5 975 143.4 |
| 50 GJ | 11 950 287 |
| 100 GJ | 23 900 574 |
| 250 GJ | 59 751 434 |
| 500 GJ | 119 502 870 |
| 1000 GJ | 239 005 740 |
Kilocalorie to Gigajoule conversion table
| Kilocalories (kcal) | Gigajoules (GJ) |
|---|---|
| 1 kcal | 0.000 004 184 |
| 2 kcal | 0.000 008 368 |
| 3 kcal | 0.000 012 552 |
| 5 kcal | 0.000 020 92 |
| 10 kcal | 0.000 041 84 |
| 20 kcal | 0.000 083 68 |
| 25 kcal | 0.000 104 6 |
| 50 kcal | 0.000 209 2 |
| 100 kcal | 0.000 418 4 |
| 250 kcal | 0.001 046 |
| 500 kcal | 0.002 092 |
| 1000 kcal | 0.004 184 |
Frequently asked
How many kilocalories are in a gigajoule?
One gigajoule equals 239005.7361 kilocalories (GJ → kcal). That figure is exact, not rounded.
How do you convert gigajoules to kilocalories?
Multiply the number of gigajoules by 239005.736138 to get kilocalories.
What is 1 kcal in gigajoules?
One kilocalorie is 0.000004184 gigajoules.
What is 10 GJ in kcal?
10 GJ = 2 390 057.4 kcal.
What exactly is a kilocalorie?
The Calorie on food labels — 1000 small calories.