Täglicher Wasserbedarf Rechner
Wie viel Wasser sollten Sie trinken?
Daily water needs vary based on body weight, activity level, and climate. This calculator gives a practical estimate of how much fluid you should aim to drink each day.
How it's calculated
The estimate is based on a standard guideline of roughly 30–35 ml of water per kilogram of body weight, plus an additional amount for physical activity or hot climates.
Example
A person weighing 70 kg with a baseline of 35 ml/kg needs about 2.45 liters per day from body weight alone, before adding extra for exercise or heat.
FAQ
Does this include water from food?
No, this estimate is for fluid intake specifically. Roughly 20% of daily water intake typically comes from food, so total hydration needs may be slightly lower than the figure shown.
Should I drink more water when exercising?
Yes. Physical activity increases fluid loss through sweat, so additional water is recommended, especially during and after intense or prolonged exercise.
Can I drink too much water?
Yes, excessive water intake can in rare cases lead to a dangerous drop in blood sodium levels (hyponatremia). Moderate, spread-out intake throughout the day is generally recommended.