Daily water intake calculator
Estimate how much water you should drink per day.
This calculator provides general estimates for educational purposes only and is not medical advice. Consult a qualified healthcare professional before changing your diet or supplement routine.
Frequently asked questions
How is daily water intake estimated?
A widely used baseline is about 33 ml per kilogram of body weight, increased for exercise and hot climates. Food typically covers roughly 20% of total fluid needs.
Can I drink too much water?
Yes — excessive intake in a short time can dilute sodium (hyponatremia). Spread fluids across the day and let thirst and urine color guide adjustments.