Daily Water Intake
Estimate how much water you need per day based on your body weight.
kg
Water per day2.6 L
Glasses (250ml)11
Baseline ≈ 35 ml per kg. Increase with exercise, heat or pregnancy.
How it works
Estimate daily water intake from body weight, activity and the conditions of the day.
Frequently asked questions
How is daily water intake estimated?
The estimate is mainly based on body weight and adjusted for activity and conditions.
Does it include water from food?
It is a practical total estimate rather than an exact record of every fluid source.
Should everyone drink the same amount?
No, needs vary with body size, exercise, climate and health.