Calories to kilojoules
Convert joules, calories, kilowatt-hours, BTU and the units used in nutrition, utility bills and physics.
Converter
Kilocalorie (food Calorie) to Kilojoule at a glance
21 rows| Kilocalorie (food Calorie) | Kilojoule |
|---|---|
| 1 kcal | 4.184 kJ |
| 2 kcal | 8.368 kJ |
| 3 kcal | 12.552 kJ |
| 4 kcal | 16.736 kJ |
| 5 kcal | 20.92 kJ |
| 6 kcal | 25.104 kJ |
| 7 kcal | 29.288 kJ |
| 8 kcal | 33.472 kJ |
| 9 kcal | 37.656 kJ |
| 10 kcal | 41.84 kJ |
| 15 kcal | 62.76 kJ |
| 20 kcal | 83.68 kJ |
| 25 kcal | 104.6 kJ |
| 30 kcal | 125.52 kJ |
| 40 kcal | 167.36 kJ |
| 50 kcal | 209.2 kJ |
| 75 kcal | 313.8 kJ |
| 100 kcal | 418.4 kJ |
| 250 kcal | 1,046 kJ |
| 500 kcal | 2,092 kJ |
| 1,000 kcal | 4,184 kJ |
Quick pairs
tap to loadHow the kilocalorie (food calorie) to kilojoule conversion works
Multiply by 4.184 to go from kilocalorie (food calorie) to kilojoule:
kJ = kcal × 4.184
Going the other way, multiply by 0.2390057361, which is the same as dividing by 4.184.
Questions
How many kilojoule are in one kilocalorie (food calorie)?
One kilocalorie (food calorie) equals 4.184 kilojoule.
Which units does this energy converter cover?
26 units in total, all referenced to the joule. They include joule, kilojoule, megajoule, gigajoule, millijoule, microjoule and more. Pick any pair from the two dropdown lists.
How precise are the results?
Every conversion is computed in your browser at double precision from the factors listed on this page, which follow the SI definitions and the exact international agreements for imperial and US customary units. Use the Decimals control to round the display without changing the underlying value.
Does anything I type leave my device?
No. The converter is plain JavaScript running locally, with no server round-trip, and the page keeps working offline once loaded.