How it works
A useful estimate, explained.
Fluid needs vary with food, weather, movement, pregnancy, illness, and medication. This result is a practical starting point rather than a fixed requirement.
Source: National Academies water guidanceDaily wellnessDaily
Water Intake Calculator
Find a hydration target that fits your day.
Quick answer
Start with a body-weight estimate, then add context for exercise and warm conditions.
Your result
Ready when you are.
Add your details and calculate to see an estimate with a clear explanation and useful supporting numbers.
FastInstant result
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Keep in mind
The number is not the whole story.
People with kidney, heart, or fluid-balance conditions should follow their clinician’s advice instead of a general calculator.
Vitalo tools provide general education, not medical advice, diagnosis, or treatment.
Clear answers
Frequently asked questions
How does the Water Intake Calculator work?
Fluid needs vary with food, weather, movement, pregnancy, illness, and medication. This result is a practical starting point rather than a fixed requirement.
What are the limits of this result?
People with kidney, heart, or fluid-balance conditions should follow their clinician’s advice instead of a general calculator.
Is the Water Intake Calculator medical advice?
No. This free tool provides a general educational estimate and cannot diagnose a condition or replace advice from a qualified healthcare professional.
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