Daily Water Intake Calculator
Estimate a daily water intake target based on your weight, activity level and climate.
This tool is for general informational purposes only and is not medical advice. It does not diagnose, treat, or replace consultation with a qualified healthcare provider.
What this tool does
Estimate a daily water intake target based on your weight, activity level and climate.
Method used
Base intake = 35 ml per kg of body weight, a commonly cited general guideline, with extra allowance added for higher activity and hot/humid climates. Individual needs vary with health conditions, diet and climate beyond what a simple formula can capture.
Frequently asked questions
Does this include water from food?
No - this is a target for fluid intake; food typically also contributes meaningfully to total hydration.
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