100 Calories to kJ
100 kcal = 418.4 kJ
100 kilocalories (food Calories) equals 418.4 kilojoules.
How to convert 100 kcal to kJ
Use the formula kJ = kcal × 4.184:
kJ = 100 × 4.184kJ = 418.4
So 100 kcal = 418.4 kJ.
Rounded values and quick estimate
- Rounded to a whole number: 418 kJ
- Rounded to one decimal place: 418.4 kJ
- Conversion factor: 1 kilocalorie (food Calorie) = 4.18 kilojoules
This conversion is exact, so there is no need to estimate: just multiply by 4.184.
100 Calories in other units
- Kilojoules
- 418.4 kJ
- Joules
- 418400 J
- Calories
- 100000 cal
- US therms
- 0.003967 thm
- Kilowatt-hours
- 0.1162 kWh
100 kcal and nearby values
| Kilocalories (food Calories) | Kilojoules |
|---|---|
| 96 kcal | 401.66 kJ |
| 97 kcal | 405.85 kJ |
| 98 kcal | 410.03 kJ |
| 99 kcal | 414.22 kJ |
| 100 kcal | 418.4 kJ |
| 101 kcal | 422.58 kJ |
| 102 kcal | 426.77 kJ |
| 103 kcal | 430.95 kJ |
| 104 kcal | 435.14 kJ |
About kilocalories (food calories) and kilojoules
A kilocalorie is 1,000 small calories, written “Calorie” on food labels. 1 kcal = 4.184 kJ.
A kilojoule is 1,000 joules. Food labels in Australia, the EU and elsewhere show energy in kJ.
Related conversions
Frequently asked questions
What is 100 Calories in kJ?
100 kilocalories (food Calories) is 418.4 kilojoules (100 kcal = 418.4 kJ).
How do you convert 100 kcal to kJ?
Apply kJ = kcal × 4.184: kJ = 100 × 4.184, kJ = 418.4.
How many kilocalories (food Calories) is 418.4 kJ?
418.4 kJ is about 100 kilocalories (food Calories).