Fluid Intake Calculator
Calculate your daily water requirements. Depending on age, weight and activity.
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
Frequently Asked Questions
How much water should I drink per day?
The German Nutrition Society recommends about 1.5 liters of water per day for adults. Total fluid needs (including food) are about 35 ml per kg of body weight. More is needed during exercise or hot weather.
What counts toward my daily fluid intake?
Water, unsweetened tea, and diluted juice spritzers are ideal. Coffee counts too, despite the myth. Fruits and vegetables also contribute significantly. Avoid sweetened drinks and excessive alcohol.
What is the Fluid Intake Calculator?
The fluid intake calculator computes the recommended daily drinking amount based on body weight, age and activity.
How does the Fluid Intake Calculator work?
Enter weight, age and activity level. The calculator determines the base requirement (approx. 30-35 ml per kg body weight) and adds supplements for exercise, heat or illness.
Key Data and Facts
Recommended: 30-35 ml per kg body weight/day. German Nutrition Society recommendation: approx. 1.5 litres of drinking (plus fluid from food). During sport: approx. 0.5-1 l extra per hour.
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