Body Type Calculator
Use this body type calculator to estimate your frame size from your height and wrist measurement, with an optional body-type label.
Updated August 8, 2026
Calculated instantly in your browser — nothing is sent to or stored on our servers.
Medical Disclaimer: This calculator provides a general estimate based on established research and is for educational purposes only, not a substitute for medical advice. Individual results can vary based on health conditions, so consult a qualified healthcare professional or registered dietitian before making significant changes to your diet, exercise, or health routine. Read our full Medical Disclaimer.
How Body Type Is Calculated
This calculator actually does two different things, and it’s worth knowing which one you’re looking at. Frame size, from your wrist and height, has real anthropometric grounding in skeletal measurement. The ecto/meso/endomorph label, if you choose to see it, is a popular but informal descriptive term, not a scientific classification.
What This Calculator Measures
Frame size describes your skeletal build, small, medium, or large, independent of how much fat or muscle you carry. The optional body-type label describes general proportions and is included because it’s widely searched, not because it’s rigorous.
Step 1: Determine Frame Size From Wrist Circumference and Height
Using your height and wrist circumference, we compare the ratio between them against standard frame-size reference tables¹ to classify your frame as small, medium, or large.
Frame ratio = Height ÷ Wrist circumference (same unit for both)
Step 2: Optionally Estimate an Informal Body-Type Label
If you enter waist, hip, and shoulder measurements, we use their relative proportions to suggest a leaning toward ectomorph, mesomorph, or endomorph, the informal somatotype labels popularized in the 1940s and still widely used in fitness culture today². These labels are commonly searched but are not a rigorous scientific classification.
How This Calculator Computes Your Result
Enter your sex, height, weight, and wrist circumference for a frame-size result. Waist, hip, and shoulder measurements are optional and only used if you also want the informal body-type label.
Step 3: Present Results as Descriptive, Not Diagnostic
Because the body-type label is the part most likely to be over-read, we place a plain disclaimer directly next to your result: this describes general build, not your metabolism, training response, or fat distribution.
A Note on Accuracy
Frame size from wrist circumference has real anthropometric grounding in skeletal measurement research. The ecto/meso/endomorph labels are informal and descriptive, not a scientifically rigorous classification. Neither should be read as predicting your metabolism, training response, or fat distribution.
Frequently Asked Questions
Is my body-type label a scientific classification?
No. The ecto/meso/endomorph labels are informal descriptive terms people commonly search for, not a rigorous scientific classification². Frame size from wrist circumference has more direct anthropometric grounding, but even that is a general reference, not a diagnosis.
Does my body type predict my metabolism or how I'll respond to training?
No. This is a common overclaim in body-type content. Your frame size and informal body-type label describe general build, not how your metabolism works or how you'll respond to a specific training or nutrition plan.
Why is wrist circumference used for frame size?
Wrist circumference relative to height has long been used as a proxy for skeletal frame size, since it's less affected by body fat than other measurements¹.
Do I need to enter waist, hip, and shoulder measurements?
No, those are optional. Height, weight, and wrist circumference are enough for a frame-size result. Waist, hip, and shoulder measurements are only used to generate the optional informal ecto/meso/endomorph label.
Sources
Body Type Calculator
Use this body type calculator to estimate your frame size from your height and wrist measurement, with an optional body-type label.
Updated August 8, 2026
Calculated instantly in your browser — nothing is sent to or stored on our servers.
Medical Disclaimer: This calculator provides a general estimate based on established research and is for educational purposes only, not a substitute for medical advice. Individual results can vary based on health conditions, so consult a qualified healthcare professional or registered dietitian before making significant changes to your diet, exercise, or health routine. Read our full Medical Disclaimer.
How Body Type Is Calculated
This calculator actually does two different things, and it’s worth knowing which one you’re looking at. Frame size, from your wrist and height, has real anthropometric grounding in skeletal measurement. The ecto/meso/endomorph label, if you choose to see it, is a popular but informal descriptive term, not a scientific classification.
What This Calculator Measures
Frame size describes your skeletal build, small, medium, or large, independent of how much fat or muscle you carry. The optional body-type label describes general proportions and is included because it’s widely searched, not because it’s rigorous.
Step 1: Determine Frame Size From Wrist Circumference and Height
Using your height and wrist circumference, we compare the ratio between them against standard frame-size reference tables¹ to classify your frame as small, medium, or large.
Frame ratio = Height ÷ Wrist circumference (same unit for both)
Step 2: Optionally Estimate an Informal Body-Type Label
If you enter waist, hip, and shoulder measurements, we use their relative proportions to suggest a leaning toward ectomorph, mesomorph, or endomorph, the informal somatotype labels popularized in the 1940s and still widely used in fitness culture today². These labels are commonly searched but are not a rigorous scientific classification.
How This Calculator Computes Your Result
Enter your sex, height, weight, and wrist circumference for a frame-size result. Waist, hip, and shoulder measurements are optional and only used if you also want the informal body-type label.
Step 3: Present Results as Descriptive, Not Diagnostic
Because the body-type label is the part most likely to be over-read, we place a plain disclaimer directly next to your result: this describes general build, not your metabolism, training response, or fat distribution.
A Note on Accuracy
Frame size from wrist circumference has real anthropometric grounding in skeletal measurement research. The ecto/meso/endomorph labels are informal and descriptive, not a scientifically rigorous classification. Neither should be read as predicting your metabolism, training response, or fat distribution.
Frequently Asked Questions
Is my body-type label a scientific classification?
No. The ecto/meso/endomorph labels are informal descriptive terms people commonly search for, not a rigorous scientific classification². Frame size from wrist circumference has more direct anthropometric grounding, but even that is a general reference, not a diagnosis.
Does my body type predict my metabolism or how I'll respond to training?
No. This is a common overclaim in body-type content. Your frame size and informal body-type label describe general build, not how your metabolism works or how you'll respond to a specific training or nutrition plan.
Why is wrist circumference used for frame size?
Wrist circumference relative to height has long been used as a proxy for skeletal frame size, since it's less affected by body fat than other measurements¹.
Do I need to enter waist, hip, and shoulder measurements?
No, those are optional. Height, weight, and wrist circumference are enough for a frame-size result. Waist, hip, and shoulder measurements are only used to generate the optional informal ecto/meso/endomorph label.
Sources
Body Type Calculator
Use this body type calculator to estimate your frame size from your height and wrist measurement, with an optional body-type label.
Updated August 8, 2026
Calculated instantly in your browser — nothing is sent to or stored on our servers.
Medical Disclaimer: This calculator provides a general estimate based on established research and is for educational purposes only, not a substitute for medical advice. Individual results can vary based on health conditions, so consult a qualified healthcare professional or registered dietitian before making significant changes to your diet, exercise, or health routine. Read our full Medical Disclaimer.
How Body Type Is Calculated
This calculator actually does two different things, and it’s worth knowing which one you’re looking at. Frame size, from your wrist and height, has real anthropometric grounding in skeletal measurement. The ecto/meso/endomorph label, if you choose to see it, is a popular but informal descriptive term, not a scientific classification.
What This Calculator Measures
Frame size describes your skeletal build, small, medium, or large, independent of how much fat or muscle you carry. The optional body-type label describes general proportions and is included because it’s widely searched, not because it’s rigorous.
Step 1: Determine Frame Size From Wrist Circumference and Height
Using your height and wrist circumference, we compare the ratio between them against standard frame-size reference tables¹ to classify your frame as small, medium, or large.
Frame ratio = Height ÷ Wrist circumference (same unit for both)
Step 2: Optionally Estimate an Informal Body-Type Label
If you enter waist, hip, and shoulder measurements, we use their relative proportions to suggest a leaning toward ectomorph, mesomorph, or endomorph, the informal somatotype labels popularized in the 1940s and still widely used in fitness culture today². These labels are commonly searched but are not a rigorous scientific classification.
How This Calculator Computes Your Result
Enter your sex, height, weight, and wrist circumference for a frame-size result. Waist, hip, and shoulder measurements are optional and only used if you also want the informal body-type label.
Step 3: Present Results as Descriptive, Not Diagnostic
Because the body-type label is the part most likely to be over-read, we place a plain disclaimer directly next to your result: this describes general build, not your metabolism, training response, or fat distribution.
A Note on Accuracy
Frame size from wrist circumference has real anthropometric grounding in skeletal measurement research. The ecto/meso/endomorph labels are informal and descriptive, not a scientifically rigorous classification. Neither should be read as predicting your metabolism, training response, or fat distribution.
Frequently Asked Questions
Is my body-type label a scientific classification?
No. The ecto/meso/endomorph labels are informal descriptive terms people commonly search for, not a rigorous scientific classification². Frame size from wrist circumference has more direct anthropometric grounding, but even that is a general reference, not a diagnosis.
Does my body type predict my metabolism or how I'll respond to training?
No. This is a common overclaim in body-type content. Your frame size and informal body-type label describe general build, not how your metabolism works or how you'll respond to a specific training or nutrition plan.
Why is wrist circumference used for frame size?
Wrist circumference relative to height has long been used as a proxy for skeletal frame size, since it's less affected by body fat than other measurements¹.
Do I need to enter waist, hip, and shoulder measurements?
No, those are optional. Height, weight, and wrist circumference are enough for a frame-size result. Waist, hip, and shoulder measurements are only used to generate the optional informal ecto/meso/endomorph label.