Body Shape Calculator

Determine your body shape using accurate body measurements, analyze your proportions, calculate important body ratios, and receive personalized fitness and styling insights.

1Personal information

Gender

AgeOptional

yrs

Height

Weight Optional

2Body measurements

Bust / Chest

Waist

Hips

Where to measure

Bust: across the fullest part of the chest.
Waist: at the narrowest point, just above the navel.
Hips: at the widest point of the hips and seat.

What Is Body Shape?

Your body shape describes the way your skeletal frame and soft tissue combine to create your overall silhouette — specifically how the widths of your shoulders and bust, your waist, and your hips relate to one another. Unlike weight or clothing size, body shape is about proportion, not size: two people can wear very different sizes yet share the same shape, and two people of the same weight can have completely different shapes.

This calculator turns your measurements into a clear body-shape classification and a set of proportion and health ratios. Use it alongside our BMI calculator, body fat calculator, lean body mass calculator, and ideal weight calculator to build a complete, well-rounded picture of your body.

Different Body Shape Types

Hourglass · Balanced / X-shape

Your bust and hips are close in measurement and your waist is meaningfully smaller than both, creating balanced upper and lower proportions around a well-defined waistline.

Pear · Triangle / A-shape

Your hips are clearly wider than your bust and your waist is defined, so visual weight sits below the waist. The silhouette widens gently toward the hips like a triangle.

Apple · Round / O-shape

Weight is carried around the midsection and upper body. Your waist measurement is close to or larger than your bust and hips, and the bust/shoulders read broader than the hips.

Rectangle · Straight / Banana / H-shape

Your bust, waist and hips are close in measurement, giving a straight, athletic up-and-down line with little waist contrast. Often called a straight or banana figure.

Inverted Triangle · V-shape / Trapezoid

Your shoulders or bust are clearly broader than your hips, so the silhouette widens at the top and tapers downward — a classic athletic V-shape with limited waist contrast.

Spoon · Full-hip Triangle

A more pronounced pear: your hips are considerably wider than your bust and your waist is very defined, so the hip line curves out sharply from the waist, creating a shelf-like appearance.

Diamond · Lozenge

Your midsection is the broadest part while your shoulders read narrower and your hips are as wide as — or wider than — your bust. Volume concentrates through the waist and lower torso.

How Body Shape Is Determined

Body shape is determined by comparing three key widths — your upper body (bust or, more precisely, shoulders), your waist, and your hips — as ratios rather than raw numbers. Working in ratios makes the method unit-agnostic, so it produces the same classification whether you measure in centimeters or inches.

Balance of top and bottom

If your bust and hips are within about 5% of each other, your silhouette is balanced; if one is clearly larger, your shape leans toward it.

Waist definition

A waist roughly a quarter smaller than the bust and hips creates an hourglass; a soft waist within ~25% of them reads as a rectangle.

Where the width sits

Wider hips point to Pear or Spoon; wider shoulders point to Inverted Triangle; a waist that is the widest point points to Apple or Diamond.

Optional refinements

Adding a shoulder measurement sharpens the classification, especially for V-shapes and for male figures described by shoulder-to-waist balance.

Six Ways to Use This Calculator

Find your shape

Get an automatic classification into one of seven figure types with a plain-English explanation of why.

Check health ratios

See your waist-to-hip and waist-to-height ratios with WHO/Ashwell risk bands for real health context.

Analyze proportions

Compare your upper body, midsection and lower body, and see which area leads your silhouette.

Guide your training

Use shape-specific fitness suggestions to build balance, tone or strength where you want it.

Dress with confidence

Get inclusive clothing-fit ideas for tops, bottoms, dresses, necklines and belts that flatter your frame.

Run what-if scenarios

Nudge your waist, hips, chest or weight to preview how your shape and ratios would shift over time.

Waist-to-Hip Ratio Explained

Waist-to-hip ratio (WHR) divides your waist circumference by your hip circumference. It is one of the most studied indicators of fat distribution because it captures whether fat is stored centrally (around the abdomen) or peripherally (around the hips and thighs). Central fat, also called visceral fat, wraps around your internal organs and is more metabolically active — and more strongly linked to heart disease, type 2 diabetes and high blood pressure — than the subcutaneous fat stored lower down.

The World Health Organization classifies a WHR below 0.80 as low risk for women and below 0.90 for men. Ratios of 0.80–0.84 (women) and 0.90–0.99 (men) are moderate, while 0.85+ (women) and 1.00+ (men) indicate higher risk. Because WHR reflects fat location rather than shape, any body shape can have any WHR — which is exactly why we report it separately from your shape label. Explore it in depth with our body type calculator.

Waist-to-Height Ratio Explained

Waist-to-height ratio (WHtR) is your waist circumference divided by your height. Its appeal is simplicity: the healthy target is to keep your waist under half your height, i.e. a ratio below 0.50. Unlike BMI, WHtR directly measures central fat and works consistently across sexes, ages and ethnic groups, which is why many researchers argue it is a better first-line screening tool than BMI.

A ratio of 0.40–0.49 sits in the healthy range, 0.50–0.59 signals increased risk, and 0.60 or higher signals high risk. Because it needs only two easy measurements and a single division, WHtR is a practical number to track over time — and it often flags rising central fat earlier than the bathroom scale does. Pair it with our BMR calculator and daily calorie planning to act on the result.

Body Proportions Explained

Upper body

Your shoulders and bust set the top width of your silhouette. A broad upper body leans your shape toward an inverted triangle.

Midsection

Your waist is the reference point for definition. A clearly smaller waist creates curves; a waist that is the widest area concentrates volume in the middle.

Lower body

Your hips and seat set the bottom width. Fuller hips relative to the bust lean your shape toward a pear or spoon.

Genetics, Age and Whether Body Shape Can Change

Your underlying frame — shoulder width, rib cage and pelvis — is largely set by genetics and does not change in adulthood. This skeletal foundation is the biggest driver of your body shape, which is why some proportions are simply your natural blueprint. Where your body preferentially stores fat is also strongly genetic and hormonally influenced, so two people eating and training identically can keep quite different shapes.

What can change is the soft tissue on top of that frame. Building muscle in your shoulders, back, glutes or legs alters your visible proportions, and losing or gaining fat changes all your measurements together. Hormonal shifts across puberty, pregnancy, and menopause commonly move fat storage — many women notice a drift from a pear toward a more apple-like pattern with age.

The practical takeaway: you can meaningfully influence your proportions and, more importantly, your health ratios through training and body composition — but you cannot spot-reduce fat or reshape your skeleton. Aim for strength, healthy ratios and how you feel, not for a specific category.

Body Shape vs Body Type

“Body shape” and “body type” are often used interchangeably, but they can mean different things. Body shape refers to your silhouette — how your bust, waist and hips relate — and produces categories like hourglass or pear. Body type sometimes refers to the same thing, and sometimes refers to the older “somatotype” system of ectomorph (lean), mesomorph (muscular) and endomorph (softer), which describes build and metabolism rather than silhouette.

This calculator focuses on measurement-based body shape. If you want the four-measurement version that adds a high-hip reading, try our companion body type calculator. For build-and-composition questions, combine your shape with body fat percentage and lean body mass.

Common Measurement Mistakes

Pulling the tape too tight

A tape that digs into the skin under-reads your true measurement. Keep it snug but flat, so a finger can just slip underneath.

Measuring the wrong spot

Measure the waist at its narrowest (usually just above the navel), not at the belly button or where trousers sit — those give inconsistent numbers.

Letting the tape slope

A tape that rides up at the back or dips at the front distorts the reading. Keep it level and parallel to the floor all the way around.

Holding your breath or sucking in

Breathe normally and stand relaxed. Artificially cinching the waist produces a shape you can't actually maintain and skews every ratio.

Accuracy, Trust and Medical Context

This calculator uses proportion-based classification adapted from established anthropometric methods, including the Female Figure Identification Technique (FFIT) research and body-scan population studies, and interprets health ratios using World Health Organization and Ashwell (waist-to-height) guidelines. The math is transparent: every result is derived directly from the measurements you enter, with no hidden scoring.

That said, body-shape categories are estimates, not diagnoses. A single label can never capture a real body's nuance, and measurements taken at home carry small errors. Treat your shape as a helpful guide for styling and training, and rely on your waist-to-hip and waist-to-height ratios — reviewed with a qualified healthcare professional — for genuine health decisions.

Frequently Asked Questions

A body shape calculator uses your body measurements — bust or chest, waist and hips, plus optional shoulder, underbust and neck — to identify your overall body shape and analyze how your proportions relate to each other. It classifies you into one of seven figure types (Hourglass, Pear, Apple, Rectangle, Inverted Triangle, Spoon or Diamond) and also calculates health-relevant ratios such as waist-to-hip ratio (WHR) and waist-to-height ratio (WHtR). The result is descriptive and is intended for styling, fitness and general wellness context — not a medical diagnosis.

Body shape is determined by comparing the width of your upper body (bust or shoulders), your waist and your hips as ratios rather than raw numbers. If your bust and hips are balanced and your waist is clearly smaller, you're an Hourglass; if your hips are wider, you're a Pear or Spoon; if your shoulders/bust are wider, you're an Inverted Triangle; if the three measurements are similar, you're a Rectangle; and if the waist is the fullest area, you're an Apple or Diamond. This calculator uses proportion-based rules adapted from established anthropometric methods rather than fixed one-size-fits-all thresholds.

Population studies using body-scan data (such as the well-known SizeUSA research) found that the Rectangle (straight) shape is the most common among women, accounting for roughly 46% of the sample, followed by the Spoon and Pear (bottom-heavy) shapes at around 20% each. The true Hourglass — often assumed to be typical — was found in only about 8% of women. Body shape varies widely by ancestry, age and life stage, so no single shape is 'normal.'

Exercise can shift your visible proportions, but it cannot change your underlying skeletal frame (shoulder width, rib cage and pelvis width are fixed). Building the shoulders and back can broaden the upper body, while glute and leg training can add lower-body shape, and core-focused fat loss can slim the midsection. What you cannot do is 'spot-reduce' fat from one specific area — fat loss happens across the whole body in a genetically determined pattern. Over time these changes can make one shape read closer to another.

Waist-to-hip ratio (WHR) is your waist measurement divided by your hip measurement. It reflects where your body stores fat — a lower ratio indicates more fat around the hips and thighs, while a higher ratio indicates more fat around the abdomen (visceral fat), which is more strongly linked to cardiovascular and metabolic risk. The World Health Organization considers WHR under 0.80 low-risk for women and under 0.90 for men. WHR is independent of body-shape category — any shape can have any WHR.

A healthy waist-to-height ratio (WHtR) is below 0.50 — in other words, keep your waist circumference under half your height. A ratio between 0.40 and 0.49 is considered the healthy range, 0.50 to 0.59 signals increased risk, and 0.60 or above signals high risk. WHtR works across sexes, ages and ethnicities and is often a better early warning sign of central fat than BMI, which is why many clinicians use the simple 'keep your waist to less than half your height' rule.

Shoulder width is optional but improves accuracy, especially for identifying the Inverted Triangle (V-shape) and for men, whose figures are usually described by shoulder-to-waist and shoulder-to-hip balance rather than bust. When you provide a shoulder measurement, the calculator uses it as the truest indicator of upper-body width instead of relying on the bust/chest alone, so the classification and shoulder-to-hip ratio better reflect your real frame. If you leave it blank, the bust/chest is used as a reasonable proxy.

Weight changes usually make all your measurements larger or smaller together but tend not to change your fundamental shape, because your genetics determine where you gain and lose fat first. A Pear who loses weight typically becomes a smaller Pear, and an Apple typically stays an Apple. That said, significant weight gain around the midsection can shift a Rectangle or Pear toward an Apple or Diamond reading, and your health ratios (WHR and WHtR) will change even when the shape label doesn't.

The calculations are accurate as ratios, but the shape label is a categorical estimate — two people with different builds can land in the same category, and someone near a boundary could reasonably fit two shapes. Accuracy depends most on how carefully you measure: use a flexible tape, keep it level and snug (not tight), and measure at the correct landmarks. Treat the shape as a helpful styling and fitness guide, and rely on the WHR and WHtR ratios, BMI and body fat percentage for health context.

No body shape is inherently healthier than another — shape is a descriptive label, not a health metric. What matters for health is where you store fat, which is captured by your waist-to-hip and waist-to-height ratios rather than by the shape name. People who store more fat around the abdomen (a higher WHR, regardless of whether they're called an Apple, Diamond or anything else) tend to have higher cardiometabolic risk than those who store fat in the hips and thighs. Focus on healthy ratios and overall fitness, not on achieving a particular shape.