Body Water Percentage Calculator
Calculate your total body water percentage using multiple methods to assess hydration status, health monitoring, and optimal fluid balance for athletic performance.
Body Water Analysis Results
Water Distribution:
Hydration Assessment:
Hydration Recommendations:
About
Our Body Water Percentage Calculator uses scientifically validated formulas to estimate total body water content, helping athletes, health professionals, and individuals monitor hydration status and fluid balance.
Why Choose
Multiple calculation methods including Watson, Hume & Weyers, and Chumlea formulas, bioelectrical impedance support, age and gender-specific adjustments, and comprehensive hydration analysis.
Features
Five validated calculation methods, intracellular and extracellular water distribution, hydration status assessment, personalized recommendations, and activity level adjustments for accurate body water analysis.
Benefits
Optimize athletic performance, monitor health status, track hydration changes, prevent dehydration, support medical assessments, and maintain proper fluid balance for overall wellness.
Enter Your Data
Input your age, weight, height, gender, and activity level. Choose your preferred calculation method and provide optional bioimpedance data for enhanced accuracy.
Select Method
Choose from Watson, Hume & Weyers, Chumlea, bioelectrical impedance, or average methods. Each formula has specific strengths for different populations and purposes.
Analyze Results
Review your body water percentage, hydration status, water distribution breakdown, and personalized recommendations for optimal health and performance.
Frequently Asked Questions - Body Water Percentage Calculator
Normal body water ranges vary by age and gender. Adult men: 60-70%, adult women: 50-60%. Athletes may have higher percentages (up to 75%) due to increased muscle mass. Children have higher percentages (75-78%), while elderly individuals have lower percentages (45-55%). Age, body composition, and health status all influence these ranges.
The Watson formula is generally most accurate for healthy adults. Hume & Weyers works well for clinical populations. Chumlea is preferred for elderly individuals. Bioelectrical impedance can be highly accurate with proper equipment and conditions. The "Average" option provides a balanced estimate across different populations and reduces formula-specific bias.
Age (decreases with age), gender (men higher than women), body composition (muscle holds more water than fat), hydration status, activity level, climate, illness, medications, and menstrual cycle in women. Athletes typically have higher percentages due to greater muscle mass, while body fat increases reduce overall water percentage.
Drink 35-40ml per kg body weight daily, increase intake during exercise (150-250ml every 15-20 minutes), consume water-rich foods, monitor urine color (pale yellow is ideal), avoid excessive caffeine and alcohol, drink before feeling thirsty, and maintain electrolyte balance with sodium and potassium-rich foods during intense activities.
Consult healthcare providers if: body water is consistently below 50% or above 75%, experiencing symptoms of dehydration (dizziness, fatigue, dark urine), rapid changes in body water percentage, medical conditions affecting fluid balance, or using medications that affect hydration. These calculations are estimates and shouldn't replace professional medical assessment.