Body Shape Calculator

The five-shape system (hourglass, pear, apple, rectangle, inverted triangle) was formalized by Devarajan and Istook at North Carolina State University in their FFIT for Apparel study (Female Figure Identification Technique, 2004), and popularized the next year by Esquire and fashion coverage. The rules use bust, waist, and hip ratios for clothing fit. The system is a fashion industry tool, not a medical or anatomical classification.

No. Two people at the same weight and height can land in different shape categories because shape depends on where fat and muscle sit, not on how much there is. Losing or gaining weight tends to make the same shape more or less pronounced rather than switching it. Shape is largely set by skeletal proportions (shoulder width versus hip width), fat-distribution genetics, and hormone profile, so it stays fairly stable across normal weight fluctuations. Treat the result as a styling reference for what flatters your proportions, not as a target to change.

Waist-to-hip ratio divides waist circumference by hip circumference. WHO reference thresholds differ by sex, but this body-shape calculator does not ask for sex and applies a conservative internal flag above 0.85. That flag is not an individualized WHO risk classification. Use the dedicated waist-to-hip calculator with the appropriate reference and treat body shape itself only as a clothing-fit description.

For the bust, run the tape around the fullest part of the chest, level under the shoulder blades, with arms relaxed at the sides. For the waist, find the narrowest part of the torso, usually about an inch above the navel and below the rib cage, and breathe out normally before taking the reading. For the hips, wrap the tape around the widest part of the seat, keeping it level all the way around. Stand relaxed, do not pull the tape tight, and take each measurement twice to confirm. Inches and centimeters both work; the calculator uses ratios, so the unit does not affect the shape result.

No. The body shape result is a styling and clothing-fit classifier from the fashion industry, not a diagnostic. It says nothing about your body composition, fat percentage, fitness, or health on its own. The waist-to-hip ratio flag is a recognized metabolic-risk signal from the WHO, but a single number is not a diagnosis either. For health questions about body fat, cardiovascular risk, or weight management, talk to a clinician who can look at the full picture (lab work, blood pressure, family history) rather than any single calculator.