Water intake at 110 lb
This calculator turns weight and exercise into a daily water target. The sample person weighs 110 lb with 30 minutes of exercise.
How it works
Water in milliliters equals 35 times weight in kilograms plus 350 times exercise minutes divided by 30. Enter pounds and the page converts them first. On this page 110 lb with 30 minutes of exercise gives a weight term of 49.9 × 35 = 1746.5 ml.
Worked example
Convert first: 110 lb is 49.9 kg. Then 49.9 × 35 = 1746.5 ml. Exercise adds 350 × 30 divided by 30 = 350 ml. 1746.5 + 350 = 2096.5 ml. That is 2.10 liters, 70.9 ounces or 8.9 cups.
Common questions
How many ounces or cups is that?
A US fluid ounce is 29.5735 milliliters and a cup is 8 ounces. At 110 lb with 30 minutes of exercise, 2096.5 ml is 70.9 ounces or 8.9 cups.
Do coffee and tea count toward my water?
Most drinks count toward your fluid total, though plain water is the simplest choice. At 110 lb with 30 minutes of exercise, 2.10 liters a day is about 9 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 110 lb with 30 minutes of exercise, treat 2.10 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 2446.5 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 110 lb the starting figure is 1746.5 ml before exercise, and 2096.5 ml with 30 minutes of exercise.