Body Shape Calculator

Body shape describes how your measurements are distributed — where you carry weight, how proportioned your frame is, and what clothing will fit you best. Beyond aesthetics, body shape has genuine health implications: apple-shaped people (waist-dominant) carry higher cardiovascular and metabolic risk than pear-shaped people (hip-dominant) at the same BMI, because abdominal fat is metabolically more harmful than hip and thigh fat. The body shape calculator classifies your shape and explains the health context for each type.

The Five Main Body Shapes

Classifications based on shoulder, bust, waist, and hip measurements:

• Hourglass: bust and hips within 5% of each other; waist significantly narrower (at least 25% smaller than hips); proportionally balanced top and bottom
• Pear (triangle): hips clearly wider than bust; waist-to-hip ratio typically below 0.80 for women; weight carried in lower body
• Apple (oval/round): waist measurement equal to or greater than hips or bust; weight concentrated in the midsection; android fat distribution
• Rectangle (straight): bust, waist, and hips within approximately 5% of each other; minimal waist definition
• Inverted triangle: shoulders/bust clearly wider than hips; athletic upper body; common in swimmers and mesomorphic builds

Use this online calculator to determine your shape. The waist-to-hip ratio calculator provides the health-focused measurement complementing body shape classification.

Body Shape and Cardiovascular Health Risk

The health implications of body shape are driven by fat distribution, not the shape per se:

• Apple/android/central obesity: excess abdominal (visceral) fat is a direct driver of insulin resistance, elevated triglycerides, low HDL, hypertension, and type 2 diabetes. Apple-shaped individuals have 2–3× higher cardiovascular risk than pear-shaped individuals at the same BMI and total body weight.
• Pear/gynoid distribution: hip and thigh (gluteofemoral) fat is metabolically relatively benign and may even be protective against insulin resistance in women. Studies show pear-shaped women have lower cardiovascular risk than apple-shaped women of the same total weight.
• Hourglass and rectangle: intermediate risk, depending on waist circumference and total body fat percentage

For health assessment, the waist-to-hip ratio (below 0.85 for women, below 0.90 for men) is the key number. The Body Roundness Index provides the quantitative cardiovascular risk measure based on your shape.

How to Take Accurate Body Shape Measurements

Use a flexible tape measure and stand naturally: Bust/chest: around the fullest part of the chest; tape level and parallel to floor. Waist: at the narrowest point, typically 1 inch above the navel; after a normal exhale, without sucking in. Hips: around the fullest part of the buttocks and hips; tape level and parallel to floor. Shoulders: around the widest part of the shoulders. For clothing purposes, take measurements in thin clothing or underwear; for health assessment, measurements over bare skin are most accurate. Take measurements at the same time of day (measurements fluctuate with meals and hydration).

Body Shape vs. Body Type (Somatotype)

Body shape (based on circumference measurements) differs from body type or somatotype (ectomorph, mesomorph, endomorph) which describes metabolic and musculoskeletal tendencies. A pear-shaped person is not necessarily an endomorph; an inverted triangle is not necessarily a mesomorph. Body shape is a measurement-based classification useful for clothing and health assessment; somatotype is a descriptive framework with less clinical utility. Body shape changes with weight gain or loss; the somatotype framework is less responsive to those changes.