Water Intake Calculator
Estimate your daily water needs from your weight, plus extra for exercise. A rough guide, not a medical target.
How to use Water Intake
- Enter your weight.
- Enter how many minutes you exercised today.
- Read the daily water estimate.
How much water should I drink?
A common guide is about 35 ml per kg of body weight a day, plus extra for exercise and heat.
Does this include the water in food?
No. Food also adds water, so the estimate is a little high for most people.