Total Body Water (Watson Formula)


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

For males

Total Body Water (TBW) = 2.447 - 0.09516 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


Watson PE, Watson ID, Batt RD.

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

The Total Body Water (Watson Formula) calculator is created by QxMD.

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1. Height?

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