2 3/4 cups of flour in grams is exactly 344 grams. Note To Measuring 2 3/4 cups of flour in grams. Measuring your flour by weight (344 grams instead of 2 3/4 cups) will provide much more accurate results in cooking. Please note that measuring 2 3/4 cups flour in grams can vary slightly by room temperature, quality of flour etc. But by using 344