Water Intake Calculator

How much water you should drink each day.

Recommended daily water
0 L
A general guide only. Actual needs depend on health, medication, pregnancy and how much comes from food and other drinks. Drink to thirst and don't over-drink — if you have kidney or heart conditions, follow your doctor's advice.

How much water do you need?

A common guide is about 35 ml per kg of body weight, plus roughly 350 ml per 30 minutes of exercise, and about 10% more in hot or humid weather. Food and other drinks also count towards your total, so you may not need it all as plain water.

FAQs

How much water a day?

Roughly 35 ml/kg plus extra for exercise and heat. Needs vary by person.

Does food count?

Yes — fruits, vegetables and other drinks add to your fluid total.