Body Shape Calculator
Calculate your body shape type from bust, waist, and hip measurements. Identifies Hourglass, Pear, Apple, Rectangle & more with visual silhouette.
About
Accurate body shape classification depends on the ratio between three circumference measurements: B (bust), W (waist), and H (hip). A miscalculation of even 2cm can shift classification from Rectangle to Hourglass, which affects garment sizing, health risk stratification, and fitness programming. This calculator applies threshold-based ratio analysis consistent with anthropometric research published in the International Journal of Clothing Science and Technology. It computes Waist-to-Hip Ratio (WHR) and cross-references WHO cardiovascular risk brackets. The tool approximates shape assuming standard measurement positions: bust at nipple line, waist at narrowest torso point, hips at widest gluteal protrusion.
Limitations exist. This model does not account for body composition (muscle vs. fat distribution), skeletal frame size, or vertical proportions. Two individuals with identical B, W, H values but different heights will receive the same shape classification despite appearing visually distinct. For clinical body composition analysis, DEXA scanning or hydrostatic weighing remains the standard. Pro tip: measure without clothing, standing relaxed, using a non-stretch tape held level to the floor.
Formulas
The primary metric is the Waist-to-Hip Ratio:
Shape classification uses bust-to-hip difference and waist-to-hip percentage:
Classification rules for female body shapes follow a decision tree. Hourglass requires RBH between 0.95 and 1.05 with RWH ≤ 0.75. Pear requires RBH < 0.95. Apple requires RBH > 1.05. Rectangle triggers when RWH ≥ 0.75 and RBH falls within 0.95 - 1.05. Diamond is identified when W exceeds both B and H.
Where: B = bust circumference, W = waist circumference (narrowest point), H = hip circumference (widest point), C = chest circumference (male). All values in cm or in.
Reference Data
| Body Shape | Primary Ratio Condition | Typical WHR Range (Female) | Visual Characteristic | Recommended Fit |
|---|---|---|---|---|
| Hourglass | B ≈ H, W < 0.75 × H | 0.65 - 0.75 | Balanced bust & hips, defined waist | Fitted, wrap dresses, belted styles |
| Top Hourglass | B > H slightly, defined waist | 0.65 - 0.75 | Slightly fuller bust than hips | V-necklines, A-line skirts |
| Bottom Hourglass | H > B slightly, defined waist | 0.65 - 0.75 | Slightly fuller hips than bust | Structured tops, bootcut pants |
| Pear (Triangle) | H > B × 1.05, moderate waist | 0.70 - 0.80 | Hips significantly wider than bust | Boat necks, dark bottoms, statement tops |
| Apple (Inverted Triangle) | B > H × 1.05 | 0.75 - 0.85 | Broader shoulders/bust, narrower hips | Empire waist, flared pants, V-necks |
| Rectangle (Straight) | |B − H| < 5%, W ≥ 0.75 × H | 0.75 - 0.90 | Uniform width, minimal waist definition | Layering, peplum tops, belted jackets |
| Spoon | H > B × 1.05, shelf-like hip | 0.70 - 0.80 | Distinct hip shelf, smaller bust | Full skirts, structured shoulders |
| Diamond | W > B and W > H | 0.85 - 1.00 | Widest at midsection | A-line, empire waist, monochrome |
| Trapezoid (Male) | C > W, W < H | N/A (Male 0.85 - 0.95) | Broad chest tapers to narrower waist | Classic fit, athletic cut |
| Inverted Triangle (Male) | C ≫ H | N/A (Male 0.80 - 0.90) | Very broad shoulders, narrow hips | Straight-leg pants, unstructured blazers |
| Oval (Male) | W > C or W > H | N/A (Male > 1.00) | Rounded midsection, widest at waist | Vertical lines, dark tones, single-breasted |
| WHO Cardiovascular Risk by WHR | ||||
| Low Risk (Female) | WHR ≤ 0.80 | Normal abdominal fat distribution | ||
| Moderate Risk (Female) | 0.81 ≤ WHR ≤ 0.85 | Increased metabolic risk indicators | ||
| High Risk (Female) | WHR > 0.85 | Elevated cardiovascular & diabetes risk | ||
| Low Risk (Male) | WHR ≤ 0.90 | Normal abdominal fat distribution | ||
| Moderate Risk (Male) | 0.91 ≤ WHR ≤ 0.99 | Increased metabolic risk indicators | ||
| High Risk (Male) | WHR ≥ 1.00 | Elevated cardiovascular & diabetes risk | ||