1 cal = 0.004184 kJ
1 Calorie (cal) = 0.004184 Kilojoule (kJ).
If you want to reverse convert, use Kilojoule → Calorie. 1 kJ = 239.00573613767 cal. You can also explore the full Energy converter page for more cross conversions.
Conversion formula
Calorie to Kilojoule formula: value in kJ = value in cal × 0.004184.
Kilojoule to Calorie formula: value in cal = value in kJ × 239.00573613767.
How to convert Calorie to Kilojoule
To convert Calorie to Kilojoule, multiply the value in cal by 0.004184. This gives the result in kJ.
For example, 1 cal = 0.004184 kJ and 10 cal = 0.04184 kJ.
What is Calorie?
Calorie (cal): The thermochemical calorie is a heat unit equal to 4.184 joules. 1 cal = 4.184 J.
What is Kilojoule?
Kilojoule (kJ): Useful for food-energy values and heat calculations without large joule totals. 1 kJ = 1000 J; 4.184 kJ = 1 kcal.
FAQ
How many kilojoule are in 1 calorie?
There are 0.004184 kJ in 1 cal.
Why can conversion results differ slightly?
Check the unit definition and rounding. US and imperial measures can differ; rounding intermediate values can also change the final digits.
How do I convert calorie to kilojoule?
Multiply the value in cal by 0.004184 to get the value in kJ.
Calorie → other Energy units
- 1 calorie → joule = 4.184 joule
- 1 calorie → kilojoule = 0.004184 kilojoule
- 1 calorie = 4.184E-6 megajoule
- 1 calorie → kilocalorie = 0.001 kilocalorie
- 1 calorie → watt hour = 0.0011622222222222 watt hour
- 1 calorie = 1.1622222222222E-6 kilowatt hour
- 1 calorie = 1.1622222222222E-9 megawatt hour
- 1 calorie → british thermal unit = 0.0039656512425834 british thermal unit
- 1 calorie → foot pound = 3.0859553628063 foot pound
- 1 calorie = 26114473967544 mega electron volt
- 1 calorie = 2.6114473967544E+19 electron volt
Calorie → Kilojoule Table
The table below shows common values from Calorie to Kilojoule and the reverse direction for quick reference.
| cal | kJ | Rounded |
|---|---|---|
| 1 cal | 0.004184 kJ | 0.0042 |
| 2 cal | 0.008368 kJ | 0.0084 |
| 3 cal | 0.012552 kJ | 0.0126 |
| 4 cal | 0.016736 kJ | 0.0167 |
| 5 cal | 0.02092 kJ | 0.0209 |
| 10 cal | 0.04184 kJ | 0.0418 |
| 12 cal | 0.050208 kJ | 0.0502 |
| 15 cal | 0.06276 kJ | 0.0628 |
| 20 cal | 0.08368 kJ | 0.0837 |
| 25 cal | 0.1046 kJ | 0.1046 |
| 30 cal | 0.12552 kJ | 0.1255 |
| 40 cal | 0.16736 kJ | 0.1674 |
| 50 cal | 0.2092 kJ | 0.2092 |
| 75 cal | 0.3138 kJ | 0.3138 |
| 100 cal | 0.4184 kJ | 0.4184 |
| 200 cal | 0.8368 kJ | 0.8368 |
| 250 cal | 1.046 kJ | 1.0460 |
| 500 cal | 2.092 kJ | 2.0920 |
| 750 cal | 3.138 kJ | 3.1380 |
| 1000 cal | 4.184 kJ | 4.1840 |
| 2500 cal | 10.46 kJ | 10.4600 |
| 5000 cal | 20.92 kJ | 20.9200 |
| 10000 cal | 41.84 kJ | 41.8400 |
Kilojoule → Calorie Table
| kJ | cal | Rounded |
|---|---|---|
| 1 kJ | 239.00573613767 cal | 239.0057 |
| 2 kJ | 478.01147227533 cal | 478.0115 |
| 3 kJ | 717.017208413 cal | 717.0172 |
| 4 kJ | 956.02294455067 cal | 956.0229 |
| 5 kJ | 1195.0286806883 cal | 1195.0287 |
| 10 kJ | 2390.0573613767 cal | 2390.0574 |
| 12 kJ | 2868.068833652 cal | 2868.0688 |
| 15 kJ | 3585.086042065 cal | 3585.0860 |
| 20 kJ | 4780.1147227533 cal | 4780.1147 |
| 25 kJ | 5975.1434034417 cal | 5975.1434 |
| 30 kJ | 7170.17208413 cal | 7170.1721 |
| 40 kJ | 9560.2294455067 cal | 9560.2294 |
| 50 kJ | 11950.286806883 cal | 11950.2868 |
| 75 kJ | 17925.430210325 cal | 17925.4302 |
| 100 kJ | 23900.573613767 cal | 23900.5736 |
| 200 kJ | 47801.147227533 cal | 47801.1472 |
| 250 kJ | 59751.434034417 cal | 59751.4340 |
| 500 kJ | 119502.86806883 cal | 119502.8681 |
| 750 kJ | 179254.30210325 cal | 179254.3021 |
| 1000 kJ | 239005.73613767 cal | 239005.7361 |
| 2500 kJ | 597514.34034417 cal | 597514.3403 |
| 5000 kJ | 1195028.6806883 cal | 1195028.6807 |
| 10000 kJ | 2390057.3613767 cal | 2390057.3614 |
Kilojoule → Calorie
The reverse value is 1 kJ = 239.00573613767 cal.