Body Type Calculator
Determine your body frame size and get personalized weight recommendations
Typical range: 150-200 cm
Measure around your wrist bone using a measuring tape
Enter your measurements to determine your body frame type
How It Works
Body Frame Size Calculation
Your body frame size is determined by measuring your wrist circumference in relation to your height. This method is considered one of the most reliable ways to assess frame size because wrist measurements remain relatively constant regardless of weight changes.
The Wrist-to-Height Ratio Method
The calculator uses the wrist-to-height ratio to determine if you have a small, medium, or large frame:
- •Small Frame: Lower wrist-to-height ratio indicates a smaller bone structure
- •Medium Frame: Average wrist-to-height ratio represents a moderate bone structure
- •Large Frame: Higher wrist-to-height ratio indicates a larger bone structure
Ideal Weight Calculation
Once your frame size is determined, the calculator uses the Robinson Formula (1983) to estimate your ideal weight range. This formula takes into account:
- •Height: Your total height in centimeters or inches
- •Gender: Different baseline weights and multipliers for males and females
- •Frame Size: Adjusted ranges based on small, medium, or large frame classification
Understanding Your Results
Your body frame type affects your ideal weight range significantly. People with larger frames naturally carry more weight healthily than those with smaller frames of the same height. The ideal weight range provided accounts for this difference, giving you a more personalized and realistic target range than generic BMI calculations alone.
Important Note: Body frame size is just one factor in determining ideal weight. Other factors like muscle mass, body composition, fitness level, and overall health are equally important. Use this calculator as a general guide, not an absolute measure of health.
Frequently Asked Questions
What is body frame size and why does it matter?
Body frame size refers to your skeletal structure. People with larger frames naturally weigh more than smaller-framed individuals of the same height, even at healthy body compositions. Knowing your frame size helps set realistic weight goals and understand healthy weight ranges specific to your body structure.
How do I measure my wrist circumference accurately?
Use a flexible measuring tape to measure around the smallest part of your wrist, just below the wrist bone (where your wrist creases when you bend your hand). The tape should be snug but not tight. For best accuracy, measure 2-3 times and use the average.
Can I change my body frame size?
No, body frame size is determined by your skeletal structure and genetics, which cannot be changed. However, you can optimize your health within your frame type through proper nutrition, exercise, and lifestyle choices. Focus on body composition (muscle vs. fat) rather than trying to change your frame.
Is the wrist measurement method accurate?
The wrist-to-height ratio method is widely used and scientifically validated for estimating frame size. The wrist is chosen because it's mostly bone with minimal fat tissue, making it a reliable indicator of skeletal size. However, individual variations exist, so use this as a general guide.
Is my data saved or shared?
No! All calculations are performed locally in your browser. We don't collect, store, or share any of your measurements or personal information. See our Privacy Policy for details.
Track Your Fitness Progress
Want to calculate calories burned during exercise? Visit VitalMetrics for comprehensive fitness and health calculators, tailor your training blocks with FitForge, and log pace benchmarks over time using RunLog Pro.
Disclaimer: This calculator provides body frame size estimates for informational purposes only. Results are based on wrist-to-height ratio measurements and may not account for all individual variations. Not intended as medical advice. Consult a healthcare professional for personalized health and weight guidance.