Body Shape Calculator

How the Body Shape Calculator Works

The calculator compares three numbers: your bust, your waist and your hips. It is the differences between them, not the numbers themselves, that decide the shape. Two people can wear completely different sizes and still be the same shape, and the same person can move between shapes over the years. Everything is worked out in your browser and nothing is stored or sent anywhere.

The Rules This Calculator Uses

Most body shape calculators do not tell you their thresholds, which makes it impossible to know why you got a result. These are the rules used here, in inches (centimetre entries are converted first). They are applied in this order, and the first one that matches wins:

• Round (apple) — your waist is within 2 inches of your largest measurement, or larger than both.
• Hourglass — bust and hips are within 2 inches of each other, and your waist is at least 9 inches smaller than your bust or 10 inches smaller than your hips.
• Pear (triangle) — your hips are at least 3 inches larger than your bust.
• Inverted triangle — your bust is at least 3 inches larger than your hips.
• Rectangle — everything else: bust and hips are close, and the waist is not dramatically smaller.

If two rules nearly matched, the tool says so rather than pretending the answer was clean. Plenty of people sit on a boundary, and knowing you are between two shapes is more useful than a confident wrong label.

How to Measure Yourself Correctly

Bad measurements are the main reason people get a shape that feels wrong. Use a soft tape measure, wear thin clothing or none, and stand normally instead of holding your stomach in — a measurement you took while breathing in will not match any garment you buy. Keep the tape level all the way around; the most common mistake is letting it ride up at the back. For the bust, measure across the fullest point with your arms down. For the waist, find the narrowest part of your torso, which is usually just above the belly button and not where your trousers sit. For the hips, stand with your feet together and measure the fullest part, which is often lower than people expect. Measure twice, and if the two readings differ by more than half an inch, measure a third time.

What Body Shape Am I?

Almost everyone arrives at this question from the same place: a garment that fitted badly in a way the size label did not predict. The answer is one of five names, and the name is decided entirely by how your three measurements relate to each other. Below is what each one means and what it changes when you shop.

Hourglass Body Shape

An hourglass has a bust and hips within about two inches of each other and a waist clearly narrower than both. A great deal of clothing is drafted around roughly this proportion, which is why waist-seamed dresses, wrap styles and belted coats tend to fit an hourglass figure without alteration. The trade-off is that very boxy or straight-cut garments hide the proportion rather than follow it, and the bust is usually the measurement that decides your size, because it is the hardest place to alter afterwards.

Pear Body Shape (Triangle)

A pear shape carries at least three inches more at the hip than the bust, so width sits below the waist. The practical consequence is sizing: a matching set often needs two different sizes, and buying to the hip then taking in the waist gives a better result than buying to the waist and hoping. Skimming fabrics sit better than clingy ones over the hip, and structure at the shoulder evens out the line if that is the look you want. Pear is one of the most common shapes, and it is the one where off-the-peg sizing fails most often.

Inverted Triangle Body Shape

An inverted triangle is a pear in reverse: the bust and shoulders measure at least three inches more than the hips. Tops bought to fit the chest are frequently loose at the waist, and set-in sleeves and narrow shoulder seams are the first places a garment pulls, so check those before anything else. Fuller skirts and wide-leg trousers balance the line, and open or V necklines give the chest more room to sit naturally.

Rectangle Body Shape

A rectangle has bust, waist and hips fairly close together, giving a straight line from shoulder to hip. Structure and layering do more work here than a nipped waist does, and a belt creates a waist rather than following one that is already there. Straight and column cuts fit with little alteration. Fit problems for a rectangle are usually vertical rather than horizontal, so check length before you check width.

Round Body Shape (Apple)

A round or apple shape carries its largest measurement at the waist, or within about two inches of it, so width sits through the middle. The bust and shoulder fit usually decides whether a garment works at all. Stiff waistbands are the first thing to test, and test them sitting down rather than standing. Softer, unstructured midsections are more forgiving than fitted ones, and empire and A-line cuts release at the widest point instead of gripping it.

How Can You Tell Your Body Type Without a Calculator?

You can get close with a mirror and an honest look, but the eye is unreliable about your own body in both directions, which is why the tape measure exists. If you want a rough check before measuring, stand square to a mirror and look only at the outline rather than at yourself. An outline that narrows clearly at the middle with a similar width top and bottom is an hourglass. Wider at the bottom than the top is a pear; wider at the top than the bottom is an inverted triangle. An outline running nearly straight down is a rectangle, and one whose widest point is the middle is a round shape. Then measure anyway, because the mirror is where most people guess wrong.

Does This Work for Men, or Only Women?

The maths works for anyone. It compares three measurements — chest or bust, waist and hips — and reports which is largest and by how much, and a tape measure does not care who is holding it. Men can and do come out as rectangle, inverted triangle, round or pear, and the buying notes above name menswear as well as womenswear.

What is genuinely different is the vocabulary. Men's clothing guides usually use their own set of names — trapezoid, inverted triangle, rectangle, triangle and oval — which map onto roughly the same proportions under different labels. And searches for male body types often mean something else again: the somatotype system of ectomorph, mesomorph and endomorph. That is not a measurement system at all. It came from 1940s constitutional-psychology research whose original claims linking build to personality have long since been discarded, and it describes build and how easily someone gains muscle or fat rather than the proportion between three measurements. If that is what you came for, this calculator is answering a different question, and it is worth knowing that before you read anything into the result.

Shopping Without the Changing Room

There is a trick that gets passed around online: take one full-length photo of yourself standing straight against a plain wall, keep it on your phone, and hold the phone up against a garment on the rack. You are not trying to see how it looks — you are checking proportion, where the hem lands, where the waist sits. Combined with knowing your shape and the three measurements you just typed in, it removes most of the reason to queue for a fitting room. Take your tape measure with you too: comparing a garment's flat measurements against your own is far more reliable than the size on the label, which varies wildly between brands and between countries.

What This Tool Is Not

This is a clothing-fit tool. It is not a health assessment. Waist measurement does appear in genuine medical guidance, but that is a single measurement judged against clinical thresholds by a doctor, and it is not what is happening here — a shape name from a ratio tells you nothing about your health, and you should not read one into the other. It is also not a judgement about appearance. There is no better or worse shape in this list, and any tool that ranks them is selling something.