1. What is BMI with Waist Size?

Body Mass Index (BMI) with waist size measurement provides a more comprehensive assessment of health risks associated with body weight. While BMI estimates body fat based on height and weight, waist circumference helps identify abdominal fat, which is particularly associated with health risks.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in meters

Additionally, the calculator evaluates waist circumference to assess abdominal obesity risk:

• Waist > 102 cm (men) / 88 cm (women): High risk
• Waist > 94 cm (men) / 80 cm (women): Increased risk
• Below these values: Normal risk

3. Importance of BMI and Waist Measurement

Details: Combining BMI with waist measurement provides a better assessment of health risks than BMI alone. Abdominal fat is strongly associated with increased risk of type 2 diabetes, hypertension, and cardiovascular disease.

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, and waist circumference in centimeters. For accurate results, measure waist at the midpoint between the lower rib and the top of the hip bone.

5. Frequently Asked Questions (FAQ)

Q1: Why combine BMI with waist measurement?
A: Waist measurement helps identify abdominal obesity, which carries higher health risks even at normal BMI levels.

Q2: What are the BMI categories?
A: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), Obesity (≥30).

Q3: How should I measure my waist accurately?
A: Stand straight and measure at the natural waist, midway between the lowest rib and the top of the hip bone.

Q4: Are there limitations to BMI?
A: Yes, BMI doesn't distinguish between muscle and fat, so athletes may have high BMI without excess fat.

Q5: Should children use this calculator?
A: No, children and teens require age- and sex-specific BMI percentiles rather than adult categories.