You weigh 270 pound how much water should you drink a day to lose weight?

The amount of water a person should drink does vary on the weight. In order to compute the proper amount, multiple your weight by 2/3. You must also remember to add 12 ounces of water for every 30 minutes that you exercise. For 270 pounds, your total amount would be 180 ounces plus the amount you need for your exercise.