Health & Fitness
Water Intake Calculator
A simple daily fluid target adjusted for your body weight, workouts and weather.
For information only. Results are estimates and are not medical advice. Please talk to a doctor or qualified professional about your own health.
About the Water Intake Calculator
A common starting point is about 35 ml of fluid per kg of body weight, with extra for exercise, hot weather, pregnancy and breastfeeding.
Tea, milk, buttermilk, coconut water and water-rich foods count toward fluids. Pale-yellow urine is a simple sign that you are well hydrated.
Frequently asked questions
Is 3 litres of water a day necessary?
No. Needs depend on body size, activity and climate. Drink to thirst and use your urine colour as a guide.
Can you drink too much water?
Yes — very large amounts in a short time can dilute blood sodium. Spread intake through the day.