Body Frame Size Calculator

This calculator determines your bone structure size based on the ratio of your height to wrist circumference. Knowing your frame size is important for determining a realistic ideal weight range for you.

1. 1

   Measure Height

   Measure your height accurately in centimeters

2. 2

   Measure Wrist

   Measure your wrist circumference at the narrowest point below the wrist bone

3. 3

   Determine Frame

   The tool calculates the ratio and classifies your frame (small, medium, large)

• 1

  Measure wrist at the narrowest point for accuracy

• 2

  A large frame means your natural weight will be higher

• 3

  Bone structure cannot be changed

• 4

  Use this information to adjust ideal weight expectations

• Measuring above the prominent wrist bone

• Using the dominant hand which may be slightly larger

• Measuring after exercise when blood vessels are dilated

• Confusing frame size with body fat percentage