💧 Water Intake Calculator
A general daily water intake estimate from your body weight, adjusted for activity level and climate.
This is a general estimate based on a commonly published baseline (about 30–35 mL of water per kg of body weight per day), not medical advice. Individual fluid needs vary with health conditions, medications, pregnancy/breastfeeding, and how much water you already get from food and other drinks. This tool is not a substitute for medical guidance — consult a healthcare provider for personal advice.
1. Your details
Commonly published range is about 30–35 mL/kg/day; 33 is used as the midpoint default.
Estimated result
Daily water intake
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In liters
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≈ 8 oz glasses
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Formula: daily water (mL) = body weight (kg) × baseline (mL/kg) × activity multiplier × climate multiplier. This includes water from all beverages and food unless you're specifically tracking plain water.