Estimate how much water your child should drink daily to stay properly hydrated for healthy growth, energy, and overall well-being.
This tool helps parents estimate their child's daily water needs. Adequate hydration is essential for healthy growth, digestion, energy levels, brain function, and overall well-being. This calculator uses age, weight, and activity level to suggest safe and effective hydration guidelines.
| Age Group | Total Water (from drinks & food) |
|---|---|
| Toddlers (1–3 years) | ~1.3 liters (5–6 cups) |
| Children (4–8 years) | ~1.7 liters (7 cups) |
| Boys (9–13 years) | ~2.4 liters (10 cups) |
| Girls (9–13 years) | ~2.1 liters (9 cups) |
| Teens (14–18 years) | ~2.5-3.3 liters (10-14 cups) |
Individual needs vary with climate and health. Drinks high in sugar (like juice and soda) should be limited. Consult a pediatrician if you have concerns about your child's hydration.
Maintained by Live Fitness Check. Last updated: August 9, 2026. How we test our calculators .
Estimates a daily water-intake target for a child using age, weight and activity level.
The calculator combines the entered weight with age- and activity-related adjustments configured in the tool. The calculation uses age, weight and activity level.
Fluid needs vary with climate, illness, diet, sports, medications and medical conditions. Use the number as an estimate and consider professional advice when the result may affect health, treatment, pregnancy, nutrition, exercise safety or another important decision.
