Estimates recommended daily water intake based on weight and activity.
The daily water intake calculator estimates how much fluid you should drink each day based on body weight, activity level, and climate.
Base intake ≈ 35 ml × body weight (kg) Add ~500 ml per hour of exercise Add 250–500 ml in hot climates
70 kg person, 1 hour of exercise, temperate climate. Base = 70 × 35 = 2,450 ml. + Exercise = 500 ml. Total ≈ 2,950 ml (~3 liters).
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