What health calculators are available on Calc4Health?

Calc4Health offers 17+ professional health calculators including BMI, BMR, TDEE, body fat percentage, target heart rate, daily water intake, waist-hip ratio, Cooper test, relative fat mass, body surface area, body adiposity index, body shape index, conicity index, heart rate zones, new BMI Trefethen calculator, Blood Alcohol Content (BAC) calculator, and Dietary Reference Intake (DRI) calculator.

Are Calc4Health calculators free to use?

Yes, all health calculators on Calc4Health are completely free to use. No registration or payment required. Access professional medical calculation tools instantly for your health and fitness monitoring needs.

How accurate are the health calculators?

Calc4Health calculators use scientifically validated formulas and equations from medical research. They provide accurate estimates based on established medical standards, though results should be used for reference and not replace professional medical advice.

What is BAI and how is it different from BMI?

BAI (Body Adiposity Index) estimates body fat percentage using hip circumference and height, without needing weight. Unlike BMI, BAI directly estimates body fat and was developed to be more accurate for diverse ethnic populations, particularly African and Mexican Americans.

Is BAI accurate for all populations?

BAI was specifically developed and validated on African American and Mexican American populations. It shows good correlation with DXA measurements for these groups but may be less accurate for Caucasian and Asian populations where BMI might perform better.

How do I measure hip circumference for BAI?

Measure hip circumference at the widest part of your buttocks. Stand with feet together, wrap the tape measure around your hips parallel to the floor. Ensure the tape is snug but not compressing the skin. Take the measurement after exhaling normally.

Body Adiposity Index (BAI) Calculator

Calculate your BAI using hip circumference and height. An alternative to BMI designed to better estimate body fat percentage.

Body Measurements

Height

Stand straight for accurate measurement

Hip Circumference

Measure at fullest part of buttocks

BAI Result

Enter measurements to calculate body adiposity

What is BAI?

The Body Adiposity Index (BAI) is a formula used to estimate body fat percentage, using hip circumference and height.

Measurement Instructions

Measure hip circumference at the fullest part of the buttocks. For metric: height in centimeters, hip in centimeters. For US: height in inches, hip in inches.

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BAI Formula

BAI = (100 × Hip in m) ÷ (Height in m × √Height in m) - 18

Calculation Steps

1. Convert hip circumference to meters

2. Convert height to meters

3. Calculate height × √height = height^1.5

4. Calculate (100 × hip) ÷ height^1.5

5. Subtract 18 from the result

Healthy Ranges

Men: 8-21% (Healthy)
Women: 21-33% (Healthy)

Medical Reference

Wikipedia - Body Adiposity Index

Comprehensive information on BAI calculation method, formula derivation, and comparison with BMI and DXA measurements.

View Wikipedia Article

Author

Dr. Beltrán J.F.