I am preparing the food chart for my father-in-law for which I have protein, carbohydrates, fats, and calcium. I have got that 1 gram produces 9 calories of fat, 4 calories of carbohydrate, 4 calories of protein but I could not find anywhere how many calories are there in 1 milligram of calcium which I suppose is 1200 milligrams required for a person above 50 years. I will really appreciate if you can reply to me on this.
There are no calories in vitamins or minerals. Calcium is a mineral, therefore, it has no calories.
The human body runs on food that yields calories as fuel that internal organs and muscles need to function. Only fat, alcohol, carbohydrates, protein and fat produce energy the body can use as fuel.
Instead of preparing a food chart, why not use a nutrition analysis software website to do the analysis for you like My Food Record which I developed with my programmers? It also has 3 exercise tools.