💧
Daily Water Intake Calculator
How much water should you drink a day?
Drink about
2.8 L
of water per day
In cups (240 ml)
12 cups
In fl oz
95 oz
A general guide only. Needs rise in hot weather, illness or pregnancy — listen to your thirst.
About the Water Intake Calculator
Free water intake calculator. Estimate how much water to drink each day based on your body weight and activity level, in litres and cups.
Everything is calculated instantly in your browser — nothing you type is uploaded or stored. Bookmark Calcooly for the next time you need it.