💧Water Intake Calculator
How much water to drink per day.
Disclaimer: These tools are for general information and educational use only and are not medical advice, diagnosis or treatment. Individual health needs vary. Always consult a qualified doctor or healthcare professional before making health decisions.
About Water Intake Calculator
Estimate how much water you should drink each day based on your weight and activity level, in litres and glasses. Free daily water intake calculator. General guidance, not medical advice.
🔒 Private by design — this tool runs entirely in your browser. Nothing you enter is uploaded to a server.
Frequently asked questions
How much water should I drink?＋
As a general guide, about 35 ml per kg of body weight plus extra for exercise. Needs vary with climate and health — this isn't medical advice.