Health
Body Water Percentage Calculator
Total body water using the Watson formula.
Result
60.0 %
Total body water ≈ 42.0 L (Watson formula)
Total body water (L)
42.03
As % of body weight
60.0 %
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Quick summary
Estimate total body water in litres and as a percentage of body weight using the Watson hydration formula.
How to calculate body water percentage manually
- Men: TBW = 2.447 − 0.09156·age + 0.1074·height + 0.3362·weight.
- Women: TBW = −2.097 + 0.1069·height + 0.2466·weight.
Estimate total body water in litres and as a percentage of body weight using the Watson hydration formula.
How it works
Men: TBW = 2.447 − 0.09156·age + 0.1074·height + 0.3362·weight. Women: TBW = −2.097 + 0.1069·height + 0.2466·weight.
Example
Male, 30y, 175 cm, 70 kg → TBW ≈ 42.5 L (≈ 60.7%).
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