Water Intake Calculator
Find recommended daily water intake based on weight and activity.
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Formula
Water (oz) = Weight (lbs) × 0.5 + adjustments
Enter Your Details
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Daily (oz)
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Cups
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Liters
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How This Water Intake Calculator Works
This calculator uses established scientific formulas validated in peer-reviewed literature. All calculations run locally in your browser — no data is sent to any server.
Frequently Asked Questions
How accurate is this?
Uses well-established formulas accurate for most people. Individual variation is normal.
Is my data stored?
No. All calculations run in your browser. No data collected.
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