1000 Joules in terms of nutrition
1 calorie (symbol: cal), also known as a small calorie, is equivalent to approximately 4.184 Joules (J). In nutrition and food science, the large calorie, denoted by kcal or Cal, is often used because 1 cal is quite small. 1 kcal (or Cal) is equivalent to 1000 cal.
1000 J is approximately equivalent to 0.239 kcal. This means that 1000 J is equivalent to the amount of energy required to raise the temperature of 1 kg of water by approximately 0.239 degrees Celsius.
A typical bowl of cooked rice (150g) contains approximately 234 kcal.
According to a heuristic analysis, there are about 3250 gains of rice in a typical bowl.
This implies that energy content per grain of rice is:
Therefore, approximately 3 grains of cooked rice is equivalent to 1000 J.