How much is 300 milligrams of water to a cup?
300 milligrams of water is equivalent to 0.3 grams of water. Since 1 milliliter of water weighs approximately 1 gram, 0.3 grams is equal to 0.3 milliliters. Therefore, 300 milligrams of water is equal to approximately 0.3 milliliters, which is roughly 0.00127 cups.