Smart Body Health & Fitness Calculator

About This Calculator

This Health & Fitness Calculator is designed to give you a quick scientific overview of your body indicators. By entering your age, gender, height, and weight, you will get essential parameters such as BMI (Body Mass Index), Body Fat Percentage, Muscle Mass, Visceral Fat, Body Age, and BMR (Basal Metabolic Rate) values using standard scientific formulas.

These values help you understand your current fitness level and overall health risk in a simple and professional format. Please note that while BMI, BMR, and Body Fat are based on established scientific equations, parameters like Muscle Mass, Visceral Fat, and Body Age are approximate estimates for awareness purposes only. For clinical accuracy, consult a healthcare professional.

Smart Body Health & Fitness Calculator

Select Gender Male Female

Body Composition

BMI

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Weight relative to height (kg/m²).

Body Fat %

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Estimated body fat %.

Muscle Mass % (Lean)

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Lean component = 100 − fat%.

Muscle Mass (kg)

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Estimated lean weight (kg).

Skeletal Muscle % (Device)

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Device-style placeholder value.

Visceral Fat

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Device-style index (1–59).

Body Age

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Heuristic estimate using BMI & Fat%.

BMR & Metabolism

BMR (Benedict 1919)

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BMR (Harris-Benedict 1984)

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BMR (Mifflin-St Jeor 1990)

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BMR (WHO)

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Resting Metabolism

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Disclaimer: Results are estimates from standard formulas (BMI, BMR, Body Fat % – WHO, Harris-Benedict, Mifflin-St Jeor, Deurenberg). Resting Metabolism, Muscle Mass, Skeletal Muscle %, Visceral Fat and Body Age are approximate and may differ from clinical/BIA device outputs (Omron, Tanita). This is for educational and awareness purposes only, not medical advice.