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ShapeUpAmerica.com provides clinical-grade calculation tools for educational and informational purposes only. The results are not a substitute for professional medical advice, diagnosis, or treatment. Always consult with a licensed healthcare professional before making health-related decisions.

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EncyclopediaBody Water %
A Biometric Story
Often called: Internal Hydration, Cellular Flow

Body Water %

The total amount of fluid in your body as a percentage of your weight.

The Science of You

You are mostly made of water! This metric looks at the total fluid balance inside and outside your cells. Keeping your body water in a healthy range is essential for nutrient transport, temperature control, and keeping your joints feeling 'silky' and mobile.

Why it Matters for You

Body water works alongside your muscle mass (LBM). As you build muscle, your body naturally holds onto more healthy water, which boosts your metabolism and recovery.

Deeply Hydrated
55 - 65% (M) / 45 - 55% (F)
Healthy Balance
50% (M) / 40% (F)
Needs Fluid
< 45% (M) / < 35% (F)

Calculate Metrics

Water Intake Calculator

Daily hydration needs based on weight and activity.

Lean Body Mass (LBM)

Calculate the mass of your body excluding fat.

Quick Definitions

Body Mass Index (BMI)Resting Heart Rate (RHR)Waist-to-Height Ratio (WtHR)Relative Fat Mass (RFM)Lean Body Mass (LBM)Biological AgeBasal Metabolic Rate (BMR)Heart Rate Variability (HRV)VO2 MaxGrip StrengthMacronutrients (Macros)Visceral FatBlood GlucoseCholesterol RatioSleep EfficiencyHydration StatusWalking SpeedBone ResiliencePhase AngleLung VitalityRecovery Window

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