Fitness
Water Intake Calculator
Calculate your recommended daily water intake based on body weight, climate, and activity.
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Water Intake Calculator
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Daily Water Intake
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ml / day
—Litres
—Fluid Ounces
—8oz Glasses
The Importance of Hydration
Water makes up about 60% of body weight and is essential for temperature regulation, joint lubrication, nutrient transport, and waste elimination.
Water Intake Guidelines
The U.S. National Academies recommends approximately 3.7 litres (125 oz) per day for men and 2.7 litres (91 oz) per day for women from all beverages and food. Exercise, hot weather, and pregnancy significantly increase requirements.