Daily Water Intake Percentile Calculator
See how your daily water intake compares with a relevant reference population.
CDC — Fast Facts: Data on Water Consumption
CDC/NHANES — Daily Consumption of Plain Water Among U.S. Adults
NHANES 2005–2010 category shares are 7% no plain water, 36% 1–3 cups, 35% 4–7 cups, and 22% 8+ cups. CDC reports a later 2015–2018 adult average of 44 fl oz/day. Only plain drinking water is counted.
What this calculator measures
See how your daily water intake compares with a relevant reference population. The comparison uses the reference population and evidence identified on this page.
How to interpret your result
A percentile describes the approximate percentage of the stated reference population with a lower value. When a source supports only categories, medians, or averages, Humanlytic shows that broader comparison instead of inventing an exact percentile.
How this works
Evidence quality
Calculated from survey data
Method
Humanlytic converts the entered amount to U.S. cups and uses CDC/NHANES plain-water categories: 0 cups, 1–3, 4–7, and 8 or more. It reports the category’s cumulative percentile range without assuming a continuous distribution.
Data source
CDC/NHANES — Daily Consumption of Plain Water Among U.S. Adults
Limitations
This measures plain drinking water only. CDC publishes rounded cup categories—0, 1–3, 4–7, and 8+ cups—not a continuous distribution. Humanlytic reports category-based cumulative ranges and does not provide hydration advice.