Water Intake Calculator
Calculate recommended daily water intake
Recommended Daily Water Intake
2.7 L
US Cups
11.2
Fluid Ounces
90 fl oz
General estimate — needs vary with health conditions, pregnancy, and medications. Consult a doctor for personalized guidance.
What is this tool?
Estimates a recommended daily water intake based on your body weight and activity level.
How to use it
Enter your weight and activity level, and a suggested daily water intake is calculated.
Climate and individual sweat rate both affect actual hydration needs meaningfully — treat this as a reasonable baseline to adjust upward on hot days or during more intense exercise.
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