BAI -Body Adiposity Index Calculator
In 10 years, will "Future You" wish you’d started today?
Body Adiposity Index (BAI) Calculator
Estimate body fat percentage using hip circumference and height.
How to Measure Hip Circumference
- Stand upright: Feet together, weight evenly distributed, relaxed posture.
- Find the widest point: Wrap the tape around the fullest part of the buttocks/hips (roughly at the level of the greater trochanters).
- Position the tape: Keep it horizontal and parallel to the floor, snug but not compressing skin.
- Read the value: Use inches for Imperial or centimeters for Metric—your calculator handles conversions.
Tips: Measure over thin clothing, take 2–3 readings and use the average, and have a helper if possible to keep the tape level.
How is BAI calculated?
BAI = (Hip circumference ÷ Height1.5) – 18
Hip circumference is in centimeters and height is in meters. This calculator accepts Imperial or Metric
and converts to the standard units for accuracy.
For illustration purposes only. Not medical advice. Consult a qualified health professional.
BAI Reference Ranges
Men
- Underfat: < 8%
- Healthy: 8 – 21%
- Overfat: 22 – 26%
- Obese: > 26%
Women
- Underfat: < 21%
- Healthy: 21 – 33%
- Overfat: 34 – 38%
- Obese: > 38%
Source: Bergman RN et al., Obesity (2011);19(5):1083–1089.
Frequently Asked Questions
Are these calculators free to use?
Yes, all calculators on the site are completely free to use. You don’t need to sign up or provide any personal information.
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?
No. All calculations run in your browser. We do not save or transmit your inputs.
