Height (cm, in):
Weight (kg, lb):
Waist circumference (cm, in):

BMI (kg m⁻²):
ABSI (m11/6 kg-2/3):
BMI z score*:
ABSI z score*:
BMI percent (1-100):
ABSI percent (1-100):
Relative risk from BMI**:
Relative risk from ABSI**:
Relative risk, BMI+ABSI**:

* Standard deviations above/below average.
** 1 is average risk; range is the approximate 95% confidence interval.

For the derivation and application of ABSI, please refer to this paper; see also here and here. The BMI and ABSI z scores, percentiles, and mortality risks are estimates based on the NHANES 1999-2004 cohort, designed to sample the USA population; see the paper for details. A relative risk greater than 1 indicates greater than average death rate while numbers below 1 indicate a lower than average rate. For example, 1.2 indicates a 20 percent greater risk than average while 0.8 indicates a 20 percent lower risk. See here for instructions on measuring waist circumference. This calculator is intended for illustrative and educational purposes only, and is not recommended for any medical use.