Water intake at 260 lb
Enter your weight and exercise time to estimate how much water to drink in a day. The example below is 260 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. On this page 260 lb with 30 minutes of exercise gives a weight term of 117.93 × 35 = 4127.55 ml.
Worked example
Convert first: 260 lb is 117.93 kg. Then 117.93 × 35 = 4127.55 ml. Exercise adds 350 × 30 divided by 30 = 350 ml. 4127.55 + 350 = 4477.55 ml. That is 4.48 liters, 151.4 ounces or 18.9 cups.
Common questions
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 260 lb the starting figure is 4127.55 ml before exercise, and 4477.55 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 260 lb with 30 minutes of exercise, spread over 16 waking hours, 4.48 liters is about 280 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 260 lb with 30 minutes of exercise, 4477.55 ml is 151.4 ounces or 18.9 cups.
Do coffee and tea count toward my water?
Most drinks count toward your fluid total, though plain water is the simplest choice. At 260 lb with 30 minutes of exercise, 4.48 liters a day is about 19 cups spread across the day.
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 260 lb with 30 minutes of exercise, treat 4.48 liters as a goal for the day, not a quota for one sitting.