1 ounce = 28.3495231 grams 1 liquid cup = 8 oz 8oz x 28.3495231grams = 226.7961848 grams about 226.8 grams per cup note: liquid measures (weight) differ dependent upon the density of the liquid. A cup of water does not weigh the same as a cup of mercury.

You can't really compare the two as the gram is a weight measurement and a cup is a volume measurement. However in liquid conversions 1 litre of water is 1000 grams and 1 cup is 1/4 of a litre so essentially 1 cup of water would = 250 grams.

Gram is a dry measurement of weight and not volume. A cup is usually a measure of volume and not weight. 1 cup is 8oz of liquid. There are about 250 ml in 8 oz.

How many grams that are in 1 cup of flour varies, depending upon the type of flour. For example, there are 140 grams in 1 cup of plain flour but there are 130 grams in 1 cup of self raising flour.

The volume measure of a cup is 0.2365882368 milliliter or 0.2365882368 cubic centimeter. Only if you think of pure water, you can say: 1 Milliliter weighs 1 gram. 1 cup of pure water weighs 0.2365882368 grams.