Water Intake Calculator
Calculate how much water you should drink per day based on weight, activity level, climate, pregnancy, and breastfeeding
Your Details
Daily Water Recommendation
Enter your weight to see your daily water recommendation
How It Works
Base intake is calculated as body weight × activity multiplier (0.033–0.045 L/kg). Additional amounts are added for hot climates, pregnancy, and breastfeeding per WHO and EFSA guidelines.
These values are general guidelines. Individual needs vary based on health conditions, medications, and diet. Consult a healthcare professional for personalized advice.
Frequently asked questions
What does Water Intake Calculator do?
Calculate how much water you should drink per day based on weight, activity level, climate, pregnancy, and breastfeeding
What should I check in the result?
Check units, rates, dates and assumptions. Compare a simple case by hand before using the result for a decision.