Free Body Water Percentage Calculator
Estimate your total body water percentage using the Watson formula based on height, weight, and age.
lbs
inches
years
Total Body Water
46.2 liters
Body Water Percentage56.6 %
Total Body Water12.2 gallons
Total Body Water vs Body Weight
Watson Formula for Total Body Water (Male)
TBW (L) = 2.447 - 0.09156 x Age + 0.1074 x Height(cm) + 0.3362 x Weight(kg)
The Watson formula is widely used in clinical settings to estimate total body water.
Healthy Body Water Ranges
Example Calculation
A 30-year-old male, 180 lbs, 70 inches.
- 01Weight = 81.6 kg, Height = 177.8 cm
- 02TBW = 2.447 - 0.09156 x 30 + 0.1074 x 177.8 + 0.3362 x 81.6
- 03= 2.447 - 2.747 + 19.1 + 27.4 = 46.2 liters
- 04Body water % = 46.2 / 81.6 x 100 = 56.6%
Frequently Asked Questions
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