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Body frame size, which accounts for bone mass and muscle mass, plays an important part in determining theoretical weight ranges. These ranges in turn act as guides for people to determine the weight they should be, depending on their frame size. There are three frame size categories: small, medium, and large. Each range varies, depending on your gender. You can determine which category you are by measuring the circumference on your wrist or the breadth of your elbow. Step 1 below begins to detail each method.

Method 1
Method 1 of 2:

Wrist Circumference

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  1. Take the end of your tape measure and bring it all the way around your wrist.[1]
  2. You can use the tables below determine your frame size, according to your wrist size.[2]
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Method 2
Method 2 of 2:

Elbow Breadth

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Tips

  • You can use an online frame size calculator to figure out your frame size. You still need to measure your wrist or elbow, but you can input the data into a calculator and have it automatically determine your frame size.
  • Regular exercise and eating healthy can provide perspective on how your body changes as you lose weight. Use those changes as motivation to maintain a health regimen that works for you.
  • In addition to the three frame sizes, there are three general "body types": endomorph, mesomorph, and ectomorph. Endomorphs have bigger bones and higher amounts of body fat, and lose weight slowly. Mesomorphs are medium-sized, strong, athletic, and lose weight and gain muscle relatively easily. Ectomorphs are skinny and long-limbed, with typically little muscle or body fat.
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About This Article

Andrea Rudominer, MD, MPH
Co-authored by:
Board Certified Integrative Medicine Doctor
This article was co-authored by Andrea Rudominer, MD, MPH. Dr. Andrea Rudominer is a board certified Pediatrician and board certified Integrative Medicine Doctor based in the San Francisco Bay Area. Dr. Rudominer has over 15 years of medical care experience and specializes in preventive health care, obesity, adolescent care, ADHD, and culturally competent care. Dr. Rudominer received her MD from the University of California, Davis, and completed a residency at the Lucile Packard Children's Hospital at Stanford University. Dr. Rudominer also has an MPH in Maternal Child Health from the University of California, Berkeley. She is a Member of the American Board of Pediatrics, a Fellow of the American Academy of Pediatrics, a Member and Delegate of the California Medical Association, and a Member of the Santa Clara County Medical Association. This article has been viewed 248,206 times.
82 votes - 56%
Co-authors: 18
Updated: February 24, 2025
Views: 248,206
Categories: Body Measurements

Medical Disclaimer

The content of this article is not intended to be a substitute for professional medical advice, examination, diagnosis, or treatment. You should always contact your doctor or other qualified healthcare professional before starting, changing, or stopping any kind of health treatment.

Article SummaryX

There are 3 frame sizes, small, medium, and large, and they usually depend on a few things including your gender and your body measurements. To measure your frame size with your wrist, wrap a tape measure snugly around your wrist and write down the measurement. If you’d rather measure your elbow to figure out your frame size, bend your arm at a 90-degree angle so your forearm is perpendicular to the ground. Then, use a ruler to measure the width of your elbow. Once you’ve taken your measurement, look at the chart below to figure out your frame size. To learn how to use an online frame size calculator, read on!

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