Since water and beverages are only a part of the input, our calculator will output both your total water intake recommendation as well as how much of it you need to get through drinking fluids. Water input in the human body comes from three main sources: water and other beverages, food, and as a side-effect of metabolic processes. Since using TDEE avoids the compromise inherent in other Adequate Water Intake estimations, this daily water intake calculator bases its output on the link between estimated energy needs and fluids intake needs. The extent to which water intake requirements are determined by energy needs is understudied but in the clinical setting it has long been practice to supply 1 ml per kcal administered by tube to patients unable to take in food or fluids. Those same determinants are also applicable to water utilization and balance which provides an argument for pegging water/fluid intake recommendations to the better studied energy recommendations. These are crucial determinants of the energy needs that must be met by dietary intake. This method is superior since energy requirements are strongly evidence-based in each age and gender group and take into account body size, body weight, and activity level. Unlike other tools that estimate daily water intake by weight (in kg/litre), this tool employs a rule for water needs in relation to one's energy requirements expressed in ml/kcal. Of course, these are estimates based on population averages so consulting your physician or nutritionist is always recommended before making changes to your water consumption or exercise routine.Ĭalculating your recommended total daily water intake and thus optimal hydration requires the estimation of your total daily energy expenditure (TDEE) which measures how much energy (in kcal, kilocalories) you expend during a typical day. The outputs of our water intake calculator are in liters, milliliters, cups (equivalent to a standard glass), and ounces of water. Our water calculator will help you easily estimate how much water you need per day including how much of it you will need to drink in the form of fluids (pure water or beverages). Adjustments for climate, excessive sweating & pregnancy.
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