Gram calorie to KilojouleConverter
Instantly convert Gram calorie (cal) to Kilojoule (kJ). Free, accurate, and easy to use.
How to Convert Gram calorie to Kilojoule
To convert Gram calorie (cal) to Kilojoule (kJ), multiply your value by 0.004184.
Example: 5 cal × 0.004184 = 0.02092 kJ
What is a Gram calorie?
The gram calorie (small calorie, cal) is the heat required to raise the temperature of 1 gram of water by 1 °C, equal to exactly 4.184 Joules. It is used in chemistry and thermodynamics for heat calculations. The food 'Calorie' (capital C) printed on nutrition labels is actually a kilocalorie (kcal) — 1,000 times larger. One gram calorie is a very small amount of energy in everyday terms.
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.
Gram calorie to Kilojoule Conversion Table
| Gram calorie (cal) | Kilojoule (kJ) |
|---|---|
| 0.001 cal | 0.00000418 kJ |
| 0.01 cal | 0.00004184 kJ |
| 0.1 cal | 0.0004184 kJ |
| 0.5 cal | 0.002092 kJ |
| 1 cal | 0.004184 kJ |
| 2 cal | 0.008368 kJ |
| 5 cal | 0.02092 kJ |
| 10 cal | 0.04184 kJ |
| 20 cal | 0.08368 kJ |
| 50 cal | 0.2092 kJ |
| 100 cal | 0.4184 kJ |
| 200 cal | 0.8368 kJ |
| 500 cal | 2.092 kJ |
| 1000 cal | 4.184 kJ |
| 5000 cal | 20.92 kJ |
| 10000 cal | 41.84 kJ |
| 50000 cal | 209.2 kJ |
| 100000 cal | 418.4 kJ |
| 1000000 cal | 4184 kJ |
| 1000000000 cal | 4184000 kJ |
Frequently Asked Questions
How do I convert Gram calorie to Kilojoule?
Multiply the Gram calorie value by 0.004184. Formula: kJ = cal × 0.004184. Example: 10 cal = 0.04184 kJ.
How many Kilojoule are in one Gram calorie?
One Gram calorie (cal) equals 0.004184 Kilojoule (kJ).
How many Gram calorie are in one Kilojoule?
One Kilojoule (kJ) equals 239.00573614 Gram calorie (cal).
What is the exact conversion factor from Gram calorie to Kilojoule?
The conversion factor is 0.004184. Multiply any cal value by this number to get kJ. For the reverse, multiply by 239.00573614.
How do I convert Kilojoule back to Gram calorie?
Divide by 0.004184, or equivalently multiply by 239.00573614. Formula: cal = kJ ÷ 0.004184.
Is the Gram calorie-to-Kilojoule conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 0.004184 is exact and universally agreed upon.