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Body fat percentage from caliper skinfolds with the 3-site, 4-site or 7-site (Jackson-Pollock) equations.
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Body density from the sum of skinfolds and age: Jackson and Pollock (1978, men) and Jackson, Pollock and Ward (1980, women) for 3 and 7 sites; Durnin and Womersley (1974) for 4 sites, by age band. Density is turned into body fat with the Siri equation (495 / density - 450). Categories are the American Council on Exercise ranges by sex.
Estimates for planning, not professional advice. What changed and when →
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