Water Intake Calculator

Estimate how much water to drink each day for your weight and activity.

Quick answer: Water Intake Calculator: Estimate how much water to drink each day for your weight and activity. Everything runs in your browser, so nothing you enter is uploaded or stored.

How to use Water Intake Calculator

  1. Enter your values in the fields.
  2. The results update instantly as you type.
  3. Note or copy the numbers you need.

Features

Frequently asked questions

How much water should I drink a day?

A common guide is about 33 ml per kilo of body weight plus extra for exercise. Needs rise in hot weather.

Does tea or food count?

Yes. Drinks and the water in food all contribute.

Is the Water Intake Calculator free?

Yes. It is free, needs no signup and works on any device.

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