ABSI -A Body Shape Index Calculator
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A Body Shape Index (ABSI) Calculator
Estimate ABSI, ABSI z-score (Table S1 method), and BMI from waist, height, weight, age, and sex.
How are ABSI and ABSI z-score calculated?
ABSI = WC ÷ (BMI2/3 × Height1/2)
where waist (WC) and height are in meters, BMI in kg/m².
ABSI z-score compares your ABSI to people of the same age and sex using the NHANES 1999–2004 smoothed single-year means and standard deviations (Table S1, Krakauer & Krakauer 2012). We linearly interpolate between ages for fractional ages.
For illustration purposes only. Not medical advice.
Interpreting ABSI z-score (broad guidance)
- < −0.5: Lower risk (below-average central shape)
- −0.5 to +0.5: Average risk
- +0.5 to +1.5: Elevated risk
- > +1.5: High risk
ABSI has been linked to mortality risk independently of BMI; z-scores use age/sex norms.
Show the math (step-by-step)
Frequently Asked Questions
Are these calculators free to use?
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How accurate are the results?
The calculators provide estimates only. They are based on the numbers you enter and standard formulas (such as compound interest or amortization schedules). Actual results may vary depending on factors like taxes, fees, or individual financial circumstances.
Can I use these calculators for financial planning?
The calculators are designed to help you explore scenarios and compare options. They are not a substitute for personalized financial advice. For a detailed plan tailored to your goals, we recommend scheduling a consultation.
Do the calculators account for taxes or inflation?
Most calculators do not automatically include taxes or inflation unless specifically stated. You can often adjust the interest rate or contribution assumptions to approximate these factors.
Do these calculators support different compounding periods?
Yes, some calculators allow you to choose how interest is compounded (monthly, quarterly, annually, etc.). This flexibility helps model real-world savings and investment scenarios more accurately.
What if my situation doesn’t fit the calculator exactly?
That’s common! These tools are meant to give you a baseline estimate. If your situation involves unique factors (tax rules, irregular cash flows, multiple accounts), schedule a conversation so we can customize the numbers.
Is my data saved or tracked?
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