Estimate your recommended daily water intake from your weight, activity level and climate. See your total daily target, an hourly average and extra water for exercise.
Choose your unit system, then enter your weight in kg (metric) or pounds (imperial). Pick your activity level and climate to fine-tune the estimate. The base is about 35 ml of water per kg of body weight, plus additions for activity and heat.
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A water intake calculator estimates how much water you should drink each day based on your body weight, how active you are and the climate — including the extra you need during and after exercise.
Food supplies about 20% of daily water; the rest comes from drinks.
Yes. Mild caffeinated drinks still contribute to hydration. Plain water is ideal, but milk, juice, tea and coffee all count towards your total (watch the calories and sugar).
Yes — drinking far beyond thirst can dilute blood sodium (hyponatremia). These figures are guides; drink to thirst and more in heat or during exercise.