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Body Fat Durnin-Womersley Calculator
Calculate body fat percentage based on biceps, triceps, subscapular, and suprailiac skinfold thicknesses using the Durnin-Womersley method.
About the Durnin-Womersley Protocol
The Durnin-Womersley formula calculates body composition across diverse age cohorts using the logarithmic sum of four upper-body skinfold sites.
Measurement Locations
- Biceps: Vertical fold at the midpoint of the anterior muscle belly
- Triceps: Vertical fold on the posterior midline
- Subscapular: Diagonal fold 1 to 2 cm below the inferior scapular angle
- Suprailiac: Diagonal fold superior to the iliac crest
Frequently Asked Questions
Why is the logarithmic transformation applied?
Skinfold compressibility decreases as total adiposity rises; logarithmic scaling stabilizes this non-linear variance.
Does this method work well for sedentary adults?
Yes. The Durnin-Womersley dataset sampled diverse non-athletic cohorts, making it suitable for general populations.
Does the formula include lower-body caliper sites?
No. It relies entirely on trunk and arm measurements, simplifying test administration.
Is calibration required for calipers?
Yes. Calipers must exert a constant jaw pressure of approximately 10 g/mm² throughout their operating range.
How to use
Calculate in three steps
- 1Enter your valuesUse the fields above and check the units shown beside each input.
- 2Run the calculationSelect Calculate to refresh the result with your latest values.
- 3Review or shareCompare the result, reset the form, print it, or share this page.
Inputs
What you need
Biological SexValue
Age (Years)yrs
Biceps Skinfoldmm
Triceps Skinfoldmm
Subscapular Skinfoldmm
Suprailiac Skinfoldmm
Body Weight (kg)kg