Calculating the amount of water you need to drink daily is more complicated than you may think. That’s because hydration needs are far from one-size-fits-all.

In general, the National Academies of Sciences, Engineering, and Medicine suggest that each day women get a total of about 2.7 liters (L), or 11 cups, of fluid and men get about 3.7 L (16 cups). Not all of that fluid has to be water intake; other beverages and the fluid in whole, nutrient-rich foods count as well.

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Find Out How Much Water You Need to Drink per Day

To give yourself a better sense of how much water you need to drink each day, use this hydration calculator.

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