Water Intake Calculator
Estimate your recommended daily water intake based on body weight and activity level.
Results
Daily Water Intake2.95 litres
Total2950 ml
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How this water intake calculator works
This calculator estimates your daily water intake using your body weight and a simple activity adjustment. It gives a practical daily target rather than a strict medical recommendation.
Formula
Water intake ≈ body weight × 35 ml, plus extra for activity
Example
A person weighing 70 kg with moderate activity may need around 2.95 litres of water per day based on this formula.
FAQs
Can I use stone and pounds?
Yes. This calculator supports both kilograms and stone with pounds.
Does activity level affect water needs?
Yes. More activity generally means higher fluid needs, especially if you sweat more.
Is this a medical recommendation?
No. It is a general estimate designed to be practical and easy to use.