kg
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Daily total
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Glasses (250 ml)
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Every waking hour
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From drinks
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From food (~20%)
Water Intake Calculator
Estimates your daily total water needs using the widely-cited 35 ml per kg of body weight base, adjusted for activity level and climate.
- About 20% of daily water intake comes from food; the rest should come from beverages
- Add 500–700 ml per hour of intense exercise
- Urine color is a practical hydration indicator – pale yellow is ideal
- Needs vary with health conditions, pregnancy, breastfeeding, and altitude