Kilojoule to KilocalorieConverter
Instantly convert Kilojoule (kJ) to Kilocalorie (kcal). Free, accurate, and easy to use.
How to Convert Kilojoule to Kilocalorie
To convert Kilojoule (kJ) to Kilocalorie (kcal), multiply your value by 0.23900574.
Example: 5 kJ × 0.23900574 = 1.19502868 kcal
What is a Kilojoule?
The kilojoule equals 1,000 Joules and is used on food nutrition labels in many countries — particularly in Europe, Australia, and Canada — as an alternative to calories. One kilocalorie (food Calorie) equals 4.184 kilojoules. A typical adult requires approximately 8,000–10,000 kJ of dietary energy per day. Running at moderate pace for one hour burns roughly 2,000–3,000 kJ.
What is a Kilocalorie?
The kilocalorie (kcal) equals 1,000 gram calories or approximately 4,184 Joules, and appears on food nutrition labels worldwide as 'Calories' (with a capital C) in the United States. An average adult diet of 2,000–2,500 kcal per day supplies about 8,370–10,460 kJ. Resting metabolic rate consumes approximately 60–80 kcal per hour. Running burns roughly 600–900 kcal per hour depending on pace and body weight.
Kilojoule to Kilocalorie Conversion Table
| Kilojoule (kJ) | Kilocalorie (kcal) |
|---|---|
| 0.001 kJ | 0.00023901 kcal |
| 0.01 kJ | 0.00239006 kcal |
| 0.1 kJ | 0.02390057 kcal |
| 0.5 kJ | 0.11950287 kcal |
| 1 kJ | 0.23900574 kcal |
| 2 kJ | 0.47801147 kcal |
| 5 kJ | 1.19502868 kcal |
| 10 kJ | 2.39005736 kcal |
| 20 kJ | 4.78011472 kcal |
| 50 kJ | 11.95028681 kcal |
| 100 kJ | 23.90057361 kcal |
| 200 kJ | 47.80114723 kcal |
| 500 kJ | 119.50286807 kcal |
| 1000 kJ | 239.00573614 kcal |
| 5000 kJ | 1195.02868069 kcal |
| 10000 kJ | 2390.05736138 kcal |
| 50000 kJ | 11950.28680688 kcal |
| 100000 kJ | 23900.57361377 kcal |
| 1000000 kJ | 239005.73613767 kcal |
| 1000000000 kJ | 239005736.1376673 kcal |
Frequently Asked Questions
How do I convert Kilojoule to Kilocalorie?
Multiply the Kilojoule value by 0.23900574. Formula: kcal = kJ × 0.23900574. Example: 10 kJ = 2.39005736 kcal.
How many Kilocalorie are in one Kilojoule?
One Kilojoule (kJ) equals 0.23900574 Kilocalorie (kcal).
How many Kilojoule are in one Kilocalorie?
One Kilocalorie (kcal) equals 4.184 Kilojoule (kJ).
What is the exact conversion factor from Kilojoule to Kilocalorie?
The conversion factor is 0.23900574. Multiply any kJ value by this number to get kcal. For the reverse, multiply by 4.184.
How do I convert Kilocalorie back to Kilojoule?
Divide by 0.23900574, or equivalently multiply by 4.184. Formula: kJ = kcal ÷ 0.23900574.
Is the Kilojoule-to-Kilocalorie conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 0.23900574 is exact and universally agreed upon.