Enter your weight and preferences to calculate your daily water needs
The base water intake formula multiplies body weight (kg) by 0.033 to get liters per day. This accounts for the water needed for cellular functions, temperature regulation, and waste removal. Physical activity increases water loss through sweat (0.5-1L per hour of exercise), while hot climates accelerate evaporative water loss. The Institute of Medicine recommends 3.7L/day for men and 2.7L/day for women from all sources including food, which typically provides about 20% of daily water intake.
This tool is for educational purposes only. Not medical advice. Consult a healthcare professional.