Water Intake Calculator
Estimates how much fluid to drink per day from your body weight, exercise time and climate, and breaks the total down into glasses and bottles.
Read the full guide to this tool
Results
Notes
- Rough baseline is 35 ml per kg of body weight, plus about 350 ml for every 30 minutes of exercise and more in heat.
- Food and other drinks count too; thirst and pale-yellow urine are better day-to-day guides than any formula.
- This is an educational estimate, not medical advice; consult a professional for decisions about your health.