Kids Water Intake Calculator
Daily fluid needs for children and teens.
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Total water includes food, which provides about 20%. Increase intake in hot weather and during sport.
Medical disclaimer: This tool is for education and is not medical advice. Read more.
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Frequently asked questions
What does the Kids Water Intake Calculator do?
Daily fluid needs for children and teens. Enter your values and the result and chart update instantly.
How accurate is it?
It uses published, widely used formulas. Results are estimates for education and planning, not a diagnosis. Talk to a qualified clinician about decisions affecting your health.
Is my information stored or shared?
No. All calculations run in your browser and nothing you type is sent to a server or saved.
What can I search to find this tool?
People find it by searching for: how much water should kids drink; teen hydration; child water per day.