This is a trick question. The answer is none. A cup is a measurement of volume, a milligram is the measurement of MASS.
100 milligrams
A of sodium is equal to 59.15 grams. This would mean that a quarter of a cup of sodium is equal to 59147.06 milligrams.
milligrams = one million. there are 1,000,000 mg in one cup.
1 metric cup =250millilitres
The weight of a cup of grapes can vary but on average a cup of grapes weighs around 140 grams, which is equal to 140,000 milligrams. This can vary based on the size and variety of grapes.
244 milligrams are present in a cup of juice.
1 US cup of water is 230,000 milligrams
Approximately 226 ml per cup.
Milligrams are MUCH smaller than cups. There are 236588 milligrams in one cup
ANSWER It strongly depends of density of yours foodstuff. For example: 1 US cup contains 236600 milligrams of milk or 307570 milligrams of honey or 47400 milligrams of corn flakes it is convenient to use cooking calculators like to do calculations of that kind
That is 0.309 of a cup.