What is total body water and why does it matter?

Total body water (TBW) is the total volume of fluid in your body, both inside and outside your cells. It's central to circulation, temperature control and nutrient transport, and typically makes up a little over half of adult body weight.

How is total body water calculated?

This calculator uses the Watson formula, which estimates TBW in litres from your age, sex, height and weight using sex-specific equations. Enter those four values and it returns your estimated litres of body water and that water as a percentage of body weight.

What percentage of body weight should be water?

Total body water is generally around 50–65% of body weight, typically near 50–55% for women and 55–65% for men, declining with age and higher body fat. Leaner, more muscular bodies hold a higher water percentage since muscle is water-rich.

Calculadora de Água Corporal Total

Estime a água no seu corpo, do jeito Watson

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Sexo

Idade (anos)

Altura (cm)

Peso (kg)

Calculadora de Água Corporal Total

A água é o maior componente individual do corpo humano. Esta calculadora estima a sua água corporal total (TBW) em litros e como porcentagem do peso corporal usando a fórmula de Watson validada, que utiliza idade, sexo, altura e peso. A TBW costuma ficar em torno de 50–65% do peso corporal — maior em homens e em pessoas mais magras, e menor quando a gordura corporal é mais alta, pois a gordura retém pouca água. Ela é usada na nutrição, no cuidado renal e no manejo de fluidos como referência inicial.

Estimativa usando a fórmula de Watson. A água corporal total costuma ficar em torno de 50–65% do peso corporal (maior em homens e em pessoas mais magras, menor com mais gordura corporal). As necessidades de hidratação e o uso clínico devem ser confirmados com um profissional.

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What is total body water and why does it matter?: Total body water (TBW) is the total volume of fluid in your body, both inside and outside your cells. It's central to circulation, temperature control and nutrient transport, and typically makes up a little over half of adult body weight.
How is total body water calculated?: This calculator uses the Watson formula, which estimates TBW in litres from your age, sex, height and weight using sex-specific equations. Enter those four values and it returns your estimated litres of body water and that water as a percentage of body weight.
What percentage of body weight should be water?: Total body water is generally around 50–65% of body weight, typically near 50–55% for women and 55–65% for men, declining with age and higher body fat. Leaner, more muscular bodies hold a higher water percentage since muscle is water-rich.

Calculadora de Água Corporal Total

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