Calculadora de Indice Braquial

The Brachial Index Calculator (BAI) estimates body fat percentage using only hip circumference and height measurements. Unlike BMI, which does not distinguish muscle from fat, BAI was developed as a simple and accessible alternative, especially useful where bioimpedance or calipers are unavailable. The formula considers the ratio of hip to height raised to 1.5, subtracting 18 to adjust the scale.

To use the calculator, measure your height in meters and hip circumference in centimeters at the widest point, with the tape parallel to the floor. Enter the values and click calculate. The result is a number that corresponds to the estimated body fat percentage. For example, a BAI of 25 indicates approximately 25% body fat. Remember that the calculation is an estimate and may vary by ethnicity, age, and physical activity level.

BAI is useful for quick body composition assessments in gyms, clinics, or field research. However, it does not replace more precise methods like DEXA or hydrodensitometry. Be cautious when interpreting results: very high or low values may not accurately reflect actual fat, especially in athletes or elderly individuals. For monitoring, always use the same measurement conditions (e.g., same time of day) and combine with other assessments like waist circumference.