Question 1

How much water should I drink per day?

Accepted Answer

General guidance often ranges from 30-40 mL per kg body weight, with higher needs in heat and during activity.

Question 2

Do I count water in food and other drinks?

Accepted Answer

Yes—water from foods and other beverages contributes to total intake; the calculator focuses on fluids you drink.

Question 3

How do exercise and climate affect needs?

Accepted Answer

Increase intake for sweat losses during exercise and in hot/dry climates; add 350-700 mL per hour of moderate activity as a starting point.

Question 4

Can I drink too much water?

Accepted Answer

Excessive intake can cause hyponatremia; balance fluids with electrolytes during prolonged heavy sweating.

Question 5

Does caffeine dehydrate you?

Accepted Answer

Caffeinated drinks contribute to hydration, though very high intakes can be mildly diuretic for some people.

Water Intake Calculator