Body Frame Size Calculator

Determine if you have a small, medium, or large body frame.

Height/Wrist Ratio
Frame Size

Understanding Body Frame Size

Body frame size is a way to categorize people's skeletal structures as small, medium, or large. It helps determine healthy weight ranges since people with larger frames naturally weigh more than those with smaller frames at the same height.

Why Frame Size Matters

Two people of the same height can have significantly different healthy weight ranges based on frame size. A large-framed person may be healthy at a weight that would be considered overweight for a small-framed person of the same height.

Measurement Method

This calculator uses the wrist circumference method. Measure your wrist with a tape measure at the smallest point, usually just above the wrist bone. The ratio of height to wrist circumference indicates frame size.

Quick Tips

  • BMI alone doesn't reflect overall health
  • TDEE varies based on activity level
  • Consult a healthcare professional for medical decisions

Frequently Asked Questions

Measure at the smallest point just above the wrist bone, with tape snug but not tight.

No, skeletal structure is determined by genetics and doesn't change in adulthood.

Yes, large-framed individuals have higher healthy weight ranges than small-framed people.

No, frame size refers to skeletal structure width, while bone density is mass per volume.

Yes, use frame size along with other metrics to set realistic weight and fitness goals.