Durnin–Womersley 4-Site Skinfold Calculator
The four-fold (biceps, triceps, subscapular, suprailiac) log-sum method with age-banded coefficients.
Durnin and Womersley measured 481 adults and published age-banded coefficients — acknowledging that the fat–density relationship itself changes with age, which single-equation protocols ignore. The upper-body site selection makes it practical to self-measure with help.
Formula
For general information only — not medical or training advice. Estimates vary between individuals; consult a qualified professional before changing your exercise or nutrition routine.
The four-fold (biceps, triceps, subscapular, suprailiac) log-sum method with age-banded coefficients. The Durnin–Womersley 4-Site Skinfold Calculator is a free, private durnin womersley tool — every result computes instantly in your browser with no sign-up and no data upload.
About Durnin–Womersley 4-Site Skinfold Calculator
Durnin and Womersley measured 481 adults and published age-banded coefficients — acknowledging that the fat–density relationship itself changes with age, which single-equation protocols ignore. It applies D = c − m × log₁₀(Σ4 folds); BF% = 495/D − 450 (c, m by age & sex). Use the Durnin–Womersley 4-Site Skinfold Calculator to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use Durnin–Womersley 4-Site Skinfold Calculator
- 1Enter your details in the Durnin–Womersley 4-Site Skinfold Calculator input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use Durnin–Womersley 4-Site Skinfold Calculator?
- ✓Instant durnin womersley result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Durnin JVGA & Womersley J, Br J Nutr 1974;32:77-97)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Durnin–Womersley 4-Site Skinfold Calculator work?+
Durnin and Womersley measured 481 adults and published age-banded coefficients — acknowledging that the fat–density relationship itself changes with age, which single-equation protocols ignore. The calculation uses the formula: D = c − m × log₁₀(Σ4 folds); BF% = 495/D − 450 (c, m by age & sex). Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Durnin–Womersley 4-Site Skinfold Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources: Durnin JVGA & Womersley J, Br J Nutr 1974;32:77-97. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Durnin–Womersley 4-Site Skinfold Calculator free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is for general fitness information only, not medical or training advice. Consult a professional before changing your routine.
What can I use the Durnin–Womersley 4-Site Skinfold Calculator for?+
It's commonly used for durnin womersley, 4 site skinfold, log skinfold. The four-fold (biceps, triceps, subscapular, suprailiac) log-sum method with age-banded coefficients.
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