Water Intake Calculator

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Estimate how much water to drink each day from your body weight, exercise and climate. See the result in liters, ounces, cups and glasses. Free and instant.

kg
min
Daily water – liters
In ounces –
In cups –
Glasses –
Based on roughly 35 ml per kg of body weight, plus about 12 oz (355 ml) per 30 minutes of exercise, with a 10% bump for hot weather. A general guide, not medical advice.
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