Health & fitness
Calculation method and formula
86.010 × log10(A − N) − 70.041 × log10(H) + 36.76; 163.205 × log10(A + G − N) − 97.684 × log10(H) − 78.387
Understand the inputs
- Formula
- Choose the matching option; it determines the table value or calculation variant.
- Height
- Unit: cm. Use a measured value or your own assumption.
- Waist circumference
- Unit: cm. Use a measured value or your own assumption.
- Neck circumference
- Unit: cm. Use a measured value or your own assumption.
- Hip circumference (female formula)
- Unit: cm. Use a measured value or your own assumption.
Assumptions and limitations
The circumference equation works internally in inches. H is height, A waist, N neck and G hip. Measurement sites and equation choice affect the estimate; it does not replace body-fat measurement.
The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.