Body Frame Size Calculator
Calculate height divided by wrist circumference, with measurement guidance and limits
Disclaimer: For informational purposes only. Not a substitute for professional medical advice. Always consult a healthcare provider for health-related decisions.
Body Frame Size Calculator
Contents
What is Body Frame Size?
Body-frame charts compare wrist circumference with height. This calculator returns only the numerical height-to-wrist ratio; it does not assign a small, medium or large frame.
MedlinePlus frame chart (reviewed 23 July 2024) uses specific height bands and wrist measurements. Its method is different from dividing height by wrist circumference, so its categories cannot be inferred from this result.
References and method last checked: 2026-09-30. Source publication or update dates are shown separately.
How to Measure
To calculate the height-to-wrist ratio, you'll need:
- Height: Stand straight against a wall, without shoes. Measure in inches.
- Wrist Circumference: Measure around your wrist, just below the wrist bone, using a flexible tape measure. Measure in inches.
Ensure the tape measure is snug but not too tight for accurate results.
Understanding Results
Ratio = height ÷ wrist circumference. Both measurements must use the same unit. For example, 70 inches ÷ 7 inches = 10.00. Equivalent measurements in centimeters give the same ratio.
A larger ratio means height is larger relative to the entered wrist measurement. The number alone is not a validated frame classification, body-composition measurement, ideal weight or calorie prescription.
Frequently Asked Questions
Does this tell me my frame size?
It provides the raw ratio only. A named frame chart must be used with its own measurement instructions, height bands and population limits.
Can I use this to set a target weight?
No target weight or calorie requirement is calculated. Wrist and height measurements alone do not establish a personal nutrition plan.