Water Intake Calculator
Daily water goal based on body weight.
Get a daily water goal from body weight
This guide uses about 35 ml of water per kilogram of body weight. It is a simple starting point, not a medical prescription.
Heat, exercise, and health conditions can raise or lower what you actually need.
Enter weight above to see a daily litre target.
water intake calculator FAQ
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We use the same published formulas you would expect from a standard water intake calculator. Always double-check medical, legal, or large money decisions.