DrinkWaterUSA is a practical information site focused on water intake, simple hydration tools, and clear explanations of what those tools can—and cannot—tell you. The site brings calculators, unit converters, printable resources, and source-linked guides together in one place.
What we provide
- Interactive tools for exploring rough estimates, bottle volumes, schedules, tracking, and unit conversions.
- Guides that explain common hydration questions and link to sources readers can review.
- Method and limitation notes so users can understand the assumptions behind each result.
What this site is not
DrinkWaterUSA is not a healthcare provider, medical practice, or diagnostic service. Its calculators provide general information, not individual medical advice. A number produced by a tool should not override a fluid restriction, treatment plan, or professional advice.
How we approach information
We aim to distinguish official population reference values from practical rules of thumb. For example, the site’s 30–40 mL/kg/day weight calculator is explicitly a rough heuristic; it is not a formula validated or issued by the National Academies or CDC. See our Methodology, Accuracy and Limitations, and Sources and References.
Corrections and updates
When a tool or source changes, we aim to review the affected content and record material changes in the Research and Updates Log. If you find a problem, see Report an Error.