Water intake at 190 lb
A common starting point is 35 milliliters of water per kilogram of body weight, plus more for exercise. Here it is applied to 190 lb with 30 minutes of exercise.
How it works
The estimate starts at 35 milliliters per kilogram of body weight. Each 30 minutes of exercise adds 350 milliliters. The page shows the total in milliliters, liters and ounces. At 190 lb, 30 minutes of exercise adds 350 ml.
Worked example
A person at 190 lb with 30 minutes of exercise is 86.18 kg. Multiply by 35: 86.18 × 35 = 3016.3 ml. Exercise adds 350 × 30 divided by 30 = 350 ml. The total is 3366.3 ml, or 3.37 liters. In ounces that is 3366.3 divided by 29.5735, which is 113.8. In cups it is 14.2.
Common questions
Does food count toward the total?
Food contains water. Treat the result as a goal for your total fluid across the day and not a quota for drinks alone. At 190 lb with 30 minutes of exercise, treat 3.37 liters as a goal for the day, not a quota for one sitting.
What if I exercise more or less than this?
Change the exercise minutes. Each 30 minutes adds 350 milliliters. At 30 minutes the page adds 350 ml. An extra 30 minutes would bring the total to 3716.3 ml.
Is 35 milliliters per kilogram right for everyone?
No. It is a common starting estimate. Heat, illness, pregnancy and some health conditions change needs. For 190 lb the starting figure is 3016.3 ml before exercise, and 3366.3 ml with 30 minutes of exercise.
Can I drink too much water?
Yes, though it is uncommon. Drinking far more than you need in a short time can dilute the salts in your blood. Spread your intake through the day. At 190 lb with 30 minutes of exercise, spread over 16 waking hours, 3.37 liters is about 210 ml an hour.
How many ounces or cups is that?
A US fluid ounce is 29.5735 milliliters and a cup is 8 ounces. At 190 lb with 30 minutes of exercise, 3366.3 ml is 113.8 ounces or 14.2 cups.