Free business calculator
Body-Fat Calipers Calculator
Estimate body-fat percentage from Jackson-Pollock 3-site or 7-site skinfold measurements.
- Instant results
- Private in your browser
- PDF report included
Use the result well
A clear answer, with the assumptions visible
These recommendations turn the result into an operational next step without hiding the inputs behind a score.
- 1
Use the same trained measurer, side, sites, and technique when tracking change.
- 2
Take repeated readings and follow the published protocol.
- 3
Do not use this estimate as a diagnosis or a judgment of health or worth.
How this tool works
- Check the expected number of skinfold sites.
- Calculate body density with the selected Jackson-Pollock equation.
- Convert body density with the Siri formula.
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