Water Intake Calculator
Estimate your daily water intake based on body weight, activity level, climate, and pregnancy or breastfeeding status.
This calculator provides a general estimate only. Individual hydration needs can vary because of health conditions, medications, pregnancy, breastfeeding, exercise, temperature, and other factors.
How to Use the Water Intake Calculator
Enter your body weight and the requested activity or environmental inputs to estimate a daily water-intake reference.
Practical Example
A person with a higher body weight or greater daily activity may receive a higher estimated fluid target than someone smaller and less active.
Factors That Affect the Result
Climate, exercise, pregnancy, diet, illness, medications and medical conditions can change fluid needs. Water from food and other beverages may also contribute to total intake.
Frequently Asked Questions
Is the result an exact requirement?
No. It is a general estimate.
Does food count toward hydration?
Yes. Many foods contain water and contribute to total fluid intake.
Can medical conditions change fluid needs?
Yes. Follow professional guidance if you have a condition that affects hydration or fluid balance.