1, the calculation method is as follows

1 calorie is approximately equal to 4. 186 joules (joules are commonly used units of energy in physics).

40 calories =40*4. 186= 167.44 joules

2.cal, transliterated from English Calorie, is defined as the heat required to raise 1 gram of water to 1 degree Celsius at 1 atmospheric pressure.

Extended data/kloc-foods with 0/00 calories are as follows:

1 snacks

100 calories is roughly equivalent to a spoonful of ice cream, 1 4 chocolate croissants, half a chocolate cream cake, six and a half marshmallows, a small sandwich biscuit, 23g potato chips, a chocolate bar, seven hard candy fruits, eight preserved apricots and1spoonful raisins.

2. Drinks

100 calories is roughly equal to half a cup of cola, a glass of beer, 125ml white wine, 200ml freshly squeezed orange juice, 150ml chocolate milkshake.

Step 3: fruit

100 calories is roughly equal to a bunch of grapes+an apple, a banana, about 30 mulberries, 4 peaches, a plate of strawberries and so on.

4. Others

100 calories is roughly equal to a boiled egg+a small piece of whole wheat toast, half a muffin cake, a spoonful of peanut butter+a piece of whole wheat bread, 10 slice of cucumber+1 slice of mashed potatoes, oatmeal cookies, a plate of cucumber and carrot +36g of mashed potatoes, etc.

References:

Baidu encyclopedia-calories

People's Network-/kloc-How much is the food with 0/00 calories?