Health & Fitness
Water Intake Calculator
Estimate daily water intake from body weight and activity level.
Calculator
HYDRATION
Estimate daily water intake
Use body weight and activity level for a simple hydration estimate.
YOUR RESULT
HOW IT WORKS
About This Calculator
Water needs vary with climate, diet, exercise, body size, pregnancy, illness, and other factors. This is a simple starting estimate and not a prescription for fluid intake.
Formula & Notes
Estimated water = body weight (kg) × 30–40 ml, with the selected activity factor.
Results are estimates for general informational use and should not be treated as medical, financial, or professional advice where applicable.