Water Intake Calculator




Height (in cm)

Weight (in kg)

Activity Multiplier

Water Intake

2.2 liter/day

Water input in the human body comes from three main sources: water and other beverages, food, and as a side-effect of metabolic processes. Since water and beverages are only a part of the input, our calculator will output total water intake liter per day for you.
You should be careful to not confuse how much water you need with how much water you need to drink. The latter is usually only around 4/5 of the total, thus you actually need to drink slightly less water than your total daily needs.