kcal to kJ
1 kcal = 4.184 kJ. Type a figure below, or scan the table for the usual values.
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Common pairs in energy.
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32 categories, 300 units. Bare words follow UK usage: pint, gallon, mpg and ton are imperial; US versions are named.
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kcal to kJ quick table
| Kilocalorie (kcal) | Kilojoule (kJ) |
|---|---|
| 50 kcal | 209.2 kJ |
| 100 kcal | 418.4 kJ |
| 150 kcal | 627.6 kJ |
| 200 kcal | 836.8 kJ |
| 250 kcal | 1,046 kJ |
| 300 kcal | 1,255.2 kJ |
| 400 kcal | 1,673.6 kJ |
| 500 kcal | 2,092 kJ |
| 750 kcal | 3,138 kJ |
| 1,000 kcal | 4,184 kJ |
| 1,500 kcal | 6,276 kJ |
| 2,000 kcal | 8,368 kJ |
| 2,500 kcal | 10,460 kJ |
How to convert kcal to kj
Multiply the kilocalorie figure by 4.184 to get kilojoule. Going the other way, divide by 4.184, which is the same as multiplying by 0.23900574.
kJ = kcal × 4.184
Example: 400 kcal is 1,673.6 kJ.
Questions
How many kilojoule in a kilocalorie?
1 kcal is 4.184 kJ. Multiply the kilocalorie figure by 4.184 to get kilojoule. Going the other way, divide by 4.184, which is the same as multiplying by 0.23900574.
What is 400 kcal in kJ?
400 kcal is 1,673.6 kJ. Type any other figure into the converter above to see it instantly, and the full list under it shows the same amount in every unit of the energy category.
Is kcal to kj a simple multiplication?
Yes. Multiply by 4.184. The factor comes from the units' legal definitions, so the result is exact to the precision shown.
Conversion guides
Formula, quick table and worked examples for the common ones.