Metabolic Age Calculator
Calculate your metabolic age to understand how your body's metabolism compares to the average for your chronological age group.
How to Use This Calculator
- Enter your chronological age in years
- Select your biological gender
- Input your height in centimeters and weight in kilograms
- Optionally, enter your body fat percentage for more accurate results
- Select your typical activity level
- Click Calculate to see your metabolic age and what it means for your health
Formula Used
BMR = (10 × weight) + (6.25 × height) - (5 × age) + s
Where:
- BMR = Basal Metabolic Rate (calories/day)
- weight = body weight in kilograms
- height = height in centimeters
- age = age in years
- s = +5 for males, -161 for females
Metabolic age is determined by comparing your BMR to average BMR values for different age groups. A lower metabolic age than your chronological age indicates a healthier metabolism.
Example Calculation
Real-World Scenario:
Sarah is a 40-year-old female who wants to assess her metabolic health. She is 165 cm tall, weighs 68 kg, and exercises 3-4 times per week.
Given:
- Age = 40 years
- Gender = Female
- Height = 165 cm
- Weight = 68 kg
- Activity Level = Moderately active
Calculation:
BMR = (10 × 68) + (6.25 × 165) - (5 × 40) - 161 = 680 + 1031.25 - 200 - 161 = 1350.25 calories/day
This BMR value corresponds to the average for a 32-year-old female of similar characteristics.
Result: Sarah's metabolic age is 32 years, which is 8 years younger than her chronological age, indicating a healthy metabolism.
Why This Calculation Matters
Practical Applications
- Assess overall metabolic health
- Track fitness progress over time
- Identify areas for lifestyle improvement
- Set realistic health and fitness goals
Key Benefits
- Early indicator of metabolic health issues
- Motivation for maintaining healthy lifestyle
- Better understanding of body composition
- Personalized approach to health management
Common Mistakes & Tips
Frequently Asked Questions
References & Disclaimer
Health Disclaimer
This metabolic age calculator is for informational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider before making any changes to your diet, exercise routine, or lifestyle.
References
- Mifflin MD, et al. "A new predictive equation for resting energy expenditure in healthy individuals" - The American Journal of Clinical Nutrition, 1990
- Mayo Clinic: "Metabolism and weight loss: How you burn calories" - Medical reference on metabolism and factors affecting it
- Harvard T.H. Chan School of Public Health: "Metabolism" - Research on metabolic health and factors influencing it
Accuracy Notice
This calculator provides an estimate based on the Mifflin-St Jeor equation for BMR calculation and standard metabolic age comparisons. Individual results may vary based on factors not included in this calculator, such as genetics, medical conditions, and medications. For a comprehensive metabolic assessment, consult with a healthcare professional.
About the Author
Kumaravel Madhavan
Web developer and data researcher creating accurate, easy-to-use calculators across health, finance, education, and construction and more. Works with subject-matter experts to ensure formulas meet trusted standards like WHO, NIH, and ISO.