Total Body Water (Watson Formula)

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About this Calculator

Total body water can be estimated using the following classic formulae:

For males

Total Body Water (TBW) = 2.447 - 0.09156 X age + 0.1074 X height + 0.3362 X weight

  • Water in Litres
  • Age in years
  • Height in cm
  • Weight in kg

For females

TBW = -2.097 + 0.1069 X height + 0.2466 X weight

  • Water in Litres
  • Height in cm
  • Weight in kg

References

Watson PE, Watson ID, Batt RD.

Total body water volumes for adult males and females estimated from simple anthropometric measurements.

American Journal of Clinical Nutrition 1980, 33 (1): 27-39

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