Calculate-Compare-Decide
Enter three measurements and see which body shape your proportions match. Body shape describes proportion for clothing fit — no shape is better or healthier than another.
Educational only. This describes proportion, not health — and it's not a goal.
Measure your bust or chest, waist and hips and compare them. Bust and hips within about 5% of each other with a waist at least 20% smaller is an hourglass. Hips clearly largest is a pear. Bust or shoulders clearly largest is an inverted triangle. All three similar is a rectangle. Waist largest is an apple. Body shape describes proportion for clothing fit — it is not a health measure.
Accuracy matters more than you would think — the classification turns on differences of a few percent, so an inch of error can change your result.
Body shape systems vary between sources, so here is exactly what this calculator does. Everything is published so you can check the working.
Most calculators run a chain of yes/no rules, which flips jarringly when one measurement changes by half an inch and hides how borderline a result is. This one compares your proportions to a reference profile for each shape and measures how close you are to each.
Worked example — 36 / 26 / 36 inches. bust÷hips = 1.00, waist÷hips = 0.72, waist÷bust = 0.72. That is an exact match for the hourglass profile, returning hourglass at about 90%. Change the waist to 32 in and the profile becomes (1.00, 0.89, 0.89) — now rectangle at about 57% with apple at 28%, honestly reflecting a figure that sits between two categories.
Worked example — male 48 / 44 / 32 / 38 inches (shoulders, chest, waist, hips). shoulders÷hips = 1.26, waist÷chest = 0.73, chest÷hips = 1.16, which matches the trapezoid profile almost exactly — trapezoid at about 95%.
Sample profiles and how this calculator classifies them. Female rows list bust / waist / hips; male rows list shoulders / chest / waist / hips. These are illustrative profiles, not targets.
| # | Profile | Set | Measurements | Closest shape | Match | Second closest | WHR |
|---|---|---|---|---|---|---|---|
| 1 | Classic hourglass | F | 36 / 26 / 36 in | Hourglass | 90% | Pear | 0.72 |
| 2 | Fuller hourglass | F | 40 / 30 / 40 in | Hourglass | 76% | Rectangle | 0.75 |
| 3 | Petite hourglass | F | 32 / 23 / 32 in | Hourglass | 91% | Pear | 0.72 |
| 4 | Soft hourglass | F | 38 / 29 / 38 in | Hourglass | 65% | Rectangle | 0.76 |
| 5 | Classic pear | F | 34 / 28 / 40 in | Pear | 69% | Spoon | 0.70 |
| 6 | Defined pear | F | 35 / 27 / 42 in | Spoon | 73% | Pear | 0.64 |
| 7 | Subtle pear | F | 36 / 29 / 39 in | Pear | 40% | Hourglass | 0.74 |
| 8 | Fuller pear | F | 40 / 34 / 46 in | Pear | 65% | Spoon | 0.74 |
| 9 | Apple / round | F | 40 / 38 / 38 in | Apple | 74% | Diamond | 1.00 |
| 10 | Fuller midsection | F | 42 / 40 / 40 in | Apple | 74% | Diamond | 1.00 |
| 11 | Slim apple | F | 36 / 34 / 35 in | Apple | 77% | Diamond | 0.97 |
| 12 | Rectangle | F | 36 / 32 / 36 in | Rectangle | 57% | Apple | 0.89 |
| 13 | Straight / athletic | F | 35 / 30 / 35 in | Rectangle | 82% | Apple | 0.86 |
| 14 | Tall rectangle | F | 34 / 30 / 35 in | Rectangle | 71% | Apple | 0.86 |
| 15 | Fuller rectangle | F | 42 / 38 / 42 in | Apple | 43% | Rectangle | 0.90 |
| 16 | Inverted triangle | F | 40 / 32 / 35 in | Inverted Triangle | 78% | Rectangle | 0.91 |
| 17 | Broad shoulders | F | 38 / 31 / 34 in | Inverted Triangle | 61% | Rectangle | 0.91 |
| 18 | Strong upper body | F | 42 / 34 / 37 in | Inverted Triangle | 71% | Rectangle | 0.92 |
| 19 | Spoon | F | 36 / 29 / 42 in | Spoon | 53% | Pear | 0.69 |
| 20 | Shelf hip | F | 35 / 28 / 41 in | Spoon | 61% | Pear | 0.68 |
| 21 | Diamond | F | 36 / 35 / 40 in | Diamond | 64% | Rectangle | 0.88 |
| 22 | Metric hourglass | F | 91 / 66 / 91 cm | Hourglass | 89% | Pear | 0.73 |
| 23 | Metric pear | F | 86 / 71 / 102 cm | Pear | 67% | Spoon | 0.70 |
| 24 | Metric rectangle | F | 90 / 80 / 91 cm | Rectangle | 63% | Apple | 0.88 |
| 25 | Trapezoid (athletic) | M | 48 / 44 / 32 / 38 in | Trapezoid | 95% | Inverted Triangle | 0.84 |
| 26 | V-taper | M | 50 / 46 / 33 / 39 in | Trapezoid | 87% | Inverted Triangle | 0.85 |
| 27 | Swimmer build | M | 49 / 45 / 31 / 35 in | Inverted Triangle | 95% | Trapezoid | 0.89 |
| 28 | Inverted triangle | M | 50 / 46 / 32 / 36 in | Inverted Triangle | 93% | Trapezoid | 0.89 |
| 29 | Rectangle | M | 42 / 40 / 38 / 40 in | Rectangle | 83% | Oval | 0.95 |
| 30 | Straight build | M | 43 / 41 / 39 / 41 in | Rectangle | 82% | Oval | 0.95 |
| 31 | Triangle | M | 40 / 38 / 38 / 44 in | Triangle | 92% | Oval | 0.86 |
| 32 | Oval | M | 44 / 44 / 46 / 42 in | Oval | 69% | Rectangle | 1.10 |
| 33 | Fuller build | M | 46 / 46 / 48 / 44 in | Oval | 68% | Rectangle | 1.09 |
| 34 | Metric trapezoid | M | 122 / 112 / 81 / 97 cm | Trapezoid | 95% | Inverted Triangle | 0.84 |
| 35 | Metric rectangle | M | 107 / 102 / 97 / 102 cm | Rectangle | 83% | Oval | 0.95 |
A match below roughly 60% means the profile genuinely sits between two shapes — which is common and completely normal.
It says how three circumferences relate to each other. It says nothing about your health, fitness, or what you should change.
Above 75% your proportions match one profile closely. Between 40 and 60% you sit between two shapes — extremely common, and not a problem to solve.
The figure behind the label. It is stable, easy to re-measure, and independent of whatever a shape system chooses to call you.
Clothes are cut to standard proportions. Knowing yours predicts where things will pull or gape — information for a tailor, not a rule about what you can wear.
A garment that fits your largest measurement and is altered elsewhere almost always ends up better than one bought smaller and let out.
On jackets, the shoulder is the hardest and most expensive thing to alter. Waist, sleeve and hem are all straightforward by comparison.
If your bust and hips take different sizes, separates fit better than one-piece garments or matched sets sold in a single size.
Proportions shift with age, training and life stage. A measurement from three years ago is not the one your tailor needs.
A measurement taken while braced is not the measurement your clothes have to accommodate. Breathe out normally.
The waist is the narrowest point of the torso, not the trouser waistband — those are often several inches apart.
Check the tape is level at the back. This single error accounts for most wrong results.
An inch of measurement error can move you between categories. If two shapes score closely, treat both as useful.
Each is just a pattern of proportions, listed in no particular order because none ranks above another.
Two of these appear in health research as screening indicators. They are population-level statistics, not individual diagnoses.
| Ratio | Calculation | What it describes | Commonly cited reference |
|---|---|---|---|
| Waist-to-hip (WHR) | waist ÷ hips | Where weight sits on the frame | WHO cites raised risk above 0.90 (men), 0.85 (women) |
| Waist-to-height (WHtR) | waist ÷ height | Central body fat, across a range of heights | Often summarised as "waist under half your height" |
| Shoulder-to-hip (SHR) | shoulders ÷ hips | Upper vs lower body width | No health threshold — a fit measure only |
| Waist-to-bust (WBR) | waist ÷ bust | Waist definition; drives classification | No health threshold — a fit measure only |
Body shape is a description of how a few circumferences on your torso relate to one another. That is the whole of it. If your bust and hips measure roughly the same and your waist is considerably smaller, you get called an hourglass. If your hips are the largest of the three, you get called a pear. The label is a summary of three numbers and their relationships, nothing more.
This matters because body shape gets treated as if it describes something deeper — personality, health, attractiveness, discipline. It does not. Two people classified identically can have completely different body compositions, fitness levels, health markers and clothing sizes. Two people with wildly different labels can be nearly identical in every measure that has any bearing on their wellbeing. The classification is a geometric summary, and geometry is all it knows about you.
Your shape comes from two things, both largely outside your control. The first is your skeleton: the width of your shoulders and the width of your pelvis are structural, set during growth, and unchangeable by any amount of training. The second is where your body preferentially stores fat, which is substantially genetic and influenced by hormones, age and life stage. Together these determine the broad outline that clothing has to fit.
The shape vocabulary most people know did not come from medicine or anatomy. It came from the clothing industry, which faced a practical problem: garments are cut to standard proportions, bodies are not standard, and manufacturers needed a shorthand for predicting how a pattern would hang on different customers. Fruit and geometric names were an easy way to communicate that shorthand to shoppers.
Formal attempts to systematise it have been made — the best known being academic work in the 2000s that analysed thousands of body scans and defined categories by specific measurement differences. That research is genuinely useful, but even it acknowledged that a large share of real bodies fall between categories or into no category cleanly. The categories are convenient bins imposed on continuous variation.
One consequence is that there is no authoritative standard. One retailer's spoon is another's bottom hourglass. Some systems use fixed inch differences, others use percentages, and the thresholds differ. This is why a calculator can legitimately give you a different answer from the one you got elsewhere, and why treating any single label as definitive is a mistake.
Almost all systems work from three core measurements: the bust or chest at its fullest, the natural waist at its narrowest, and the hips at their fullest. Some add a fourth — shoulder width, which sharpens classification for male body types, and the high hip, which distinguishes a spoon from a standard pear.
From those numbers, systems compare either absolute differences (bust is four inches larger than hips) or proportional differences (bust is 12% larger than hips). Proportional comparison is generally fairer, because a four-inch difference means something very different on a 32-inch frame than a 48-inch one. This calculator uses ratios throughout for that reason, which also means inches and centimetres give identical results.
These are frequently confused and measure entirely different things. BMI is weight divided by height squared, producing a single number that says nothing about proportion. Body shape ignores weight completely and describes only how measurements relate to each other. This is why the calculator above has no weight field: weight plays no part in determining shape, and including it would invite exactly the comparison the tool is trying to avoid.
Two people with identical BMI can have completely different shapes. Two people with the same shape can sit at very different BMIs. Neither substitutes for the other, and neither is a complete picture of anything. BMI in particular has well-documented limitations as an individual measure — it does not distinguish muscle from fat, and it performs differently across ethnic groups and athletic populations — which is part of why waist-based measures have gained ground in research.
Body fat percentage measures composition: how much of your mass is fat tissue rather than muscle, bone and organs. Body shape measures geometry: how your outline is arranged. They are related but far from the same thing.
The practical implication catches a lot of people out. Because where you store fat is a large part of what determines your shape, losing or gaining fat usually makes you a smaller or larger version of the same shape rather than a different shape. Someone with a pear distribution who loses a significant amount of fat generally becomes a smaller pear. Understanding this in advance saves a great deal of frustration and stops people pursuing a change that was never available.
Hourglass. Bust and hips measure within a few percent of each other, with a waist noticeably smaller than both — typically at least 20 to 25 percent narrower. Waist-defined clothing fits with minimal alteration. This shape is culturally over-celebrated, which is a fact about culture rather than about bodies.
Pear, also called triangle. Hips measure meaningfully larger than the bust, often by five percent or more, with the waist somewhere between. The practical consequence is that bought-to-fit-the-hip bottoms gape at the waist, which is the single most common alteration in womenswear.
Inverted triangle. Bust or shoulders measure meaningfully larger than the hips. Common in people who swim, row or train upper body heavily, and also simply a common skeletal build. Jackets that fit the shoulder tend to be roomy through the waist.
Rectangle. Bust, waist and hips are all fairly similar, with limited waist taper. Straight and column cuts fit with very little alteration, and boxy or oversized shapes sit particularly well because there is less taper to accommodate.
Apple, also called round. The waist measures close to or above the bust and hips, with weight carried centrally. Cuts that skim rather than cinch through the middle generally hang more cleanly, and fabrics with drape move better than stiff, structured material.
Spoon. Similar to a pear but with a pronounced shelf at the upper hip — the high hip measurement is noticeably larger relative to the waist. It is the reason the high hip measurement exists in more detailed systems, and it changes which trouser rises sit comfortably.
Diamond. The waist is the fullest measurement with hips wider than the bust. Often grouped with apple in simpler systems, which is one more illustration of how loose the vocabulary is.
Trapezoid. Shoulders moderately wider than the hips with a defined waist. This is the proportion most off-the-rack menswear is cut for, which is why people with this build find shopping comparatively easy.
Inverted triangle. A pronounced difference between shoulders and hips, common in people who train upper body heavily. Shirts that fit the shoulders and chest are often substantially too large at the waist, making tapered cuts or alterations worthwhile.
Rectangle. Shoulders, chest and hips measure fairly similarly with limited waist taper. Regular and classic fits work well; heavily tapered cuts can pull.
Triangle. Hips measure wider than the shoulders. Fitting jackets and trousers to the hip and having the waist adjusted is the usual approach, and structured shoulders even out the line for those who want that.
Oval. The waist is the fullest measurement. Single-breasted jackets with a longer lapel line create a clean vertical, and cuts that skim rather than cling tend to hang best.
Use a flexible tape measure, not a rigid one, and wear thin clothing or none. The tape must be level and parallel to the floor all the way around — the most common error by a wide margin is a tape that rides up at the back, which shrinks the measurement and can shift your classification.
Take each measurement twice and use the average. Stand normally with your weight even on both feet, arms relaxed at your sides while someone else measures if possible, or in front of a mirror if not. Breathe out normally: a measurement taken while holding your stomach in is not the measurement your clothing has to accommodate, and it is not the number a tailor needs.
If you are tracking over time, measure at the same time of day, ideally in the morning. Waist measurements in particular vary through the day with food and fluid, and a comparison between a morning measurement and an evening one can show a change that is not really there.
Waist divided by hips. It describes where mass sits on your frame rather than how much of it there is, which is why it appears in cardiovascular research as a complement to weight-based measures. The World Health Organization has cited raised risk above 0.90 for men and 0.85 for women.
Two caveats matter enormously. These thresholds were derived from population studies to identify groups for further screening, not to classify individuals — a number just either side of a cut-off carries very little individual meaning. And they perform differently across ethnicities, ages and body types, which is why several health bodies now favour waist-to-height as a simpler and more transferable measure.
Waist divided by height, usually summarised as keeping your waist under half your height. Its advantage is that it needs no adjustment for stature and appears to work reasonably consistently across adult populations, which is why it has gained traction as a screening indicator in recent years.
It remains a screening tool. It tells you nothing about your fitness, your diet, your muscle mass or your actual cardiovascular health, all of which require proper assessment. Treat it as one input among many, and take any concern to a doctor rather than to the internet.
Shoulders divided by hips. Unlike the previous two, this one has no health meaning at all — it is a pure proportion measure. Its usefulness is entirely in tailoring, where it predicts whether a jacket that fits your shoulders will fit your hips, and how much waist suppression a garment needs to hang cleanly.
Beyond the three-circumference summary, several other proportional relationships affect how clothes fit and are worth knowing about yourself. Torso length relative to leg length determines where waistbands naturally sit and whether standard rises work for you. Shoulder slope affects how jackets and structured garments hang. Ribcage width relative to hip width can make two people with the same measurements look quite different in the same garment.
None of these appear in a standard body shape calculator, which is one honest measure of how coarse the categories are. If you are having clothes made, these are the details that actually matter, and they are why a fitting is worth more than any label.
The useful version of body-shape styling advice is entirely mechanical: it predicts where mass-produced clothes, cut for a standard set of proportions almost nobody has, will fit badly on you. If your hips are much larger than your waist, trousers bought to fit the hip will gape at the waist, so you look for higher rises, stretch fabrics, or plan on a waistband alteration. If your shoulders are broad relative to your hips, jackets that fit the shoulder will be roomy at the waist, so cuts with waist shaping fit better off the rack.
What is not useful is the older tradition of styling advice built on hiding, minimising, balancing out and camouflaging. That framing treats ordinary proportions as flaws to be managed, and there is no evidence anyone dresses better for it — only that they feel worse. Fit is a question about how fabric hangs on a three-dimensional object. What you want to wear is an entirely separate question, and no calculator has standing to answer it.
Knowing your proportions makes conversations with a tailor considerably more productive. The common alterations follow directly from shape: taking in a waistband, adjusting a jacket's waist suppression, shortening or lengthening a rise, and adjusting sleeve and hem length. Shoulder alterations are the exception — difficult and expensive — which is why the shoulder is the measurement to prioritise when buying tailoring off the rack.
The general rule is to buy for the widest point and have the rest brought in. Letting a garment out is limited by the seam allowance the manufacturer left, which is often minimal in mass-produced clothing, whereas taking in is nearly always possible. A moderately priced garment that has been altered to fit generally looks better than an expensive one that has not.
Training changes muscle and fat. It does not change skeletal proportion, so it will not convert one shape into another — but that is a narrow measure of what training is for. Resistance work builds strength and supports bone density; cardiovascular work supports heart and lung function; mobility work protects range of motion, which matters increasingly with age.
General guidance that applies regardless of shape: combine resistance and cardiovascular training, prioritise consistency over intensity, and choose activity you will actually keep doing. Bodies respond well to sustained moderate effort and poorly to punishing schedules that get abandoned after a month.
If you are training toward a specific goal, a qualified coach who can assess you in person is worth far more than any online recommendation. And if exercise is functioning primarily as a way to correct a perceived flaw rather than to build capacity or because you enjoy it, that is worth noticing — it tends to make training both less effective and much harder to sustain.
There is no body-shape-specific diet, and any source offering one is selling something. Nutrition needs are driven by your activity, your health status, your goals and your circumstances — not by the ratio between your waist and your hips. A calculator that classified your proportions has no information relevant to what you should eat.
General principles that are well supported and not shape-dependent: adequate protein supports muscle maintenance, particularly alongside resistance training and with increasing age; fibre and whole foods support digestive and metabolic health; and hydration matters more than most people account for. Anything more specific than that — particularly anything involving restriction — is a conversation for a registered dietitian or doctor who knows your history, not for a web page.
Any tool of this kind is working from three or four numbers describing a complex three-dimensional object, using categories invented for garment manufacturing, with thresholds that differ between every system in use. It cannot see posture, bone structure, muscle distribution, torso length or anything about your health. Measurement error of a single inch can move you between categories.
It is also worth saying plainly that tools like this can be genuinely unhelpful for some people. If you find yourself measuring repeatedly, or feeling worse after using body-related calculators, that is worth taking seriously. Speaking to a doctor or a qualified professional is a more useful step than another measurement, and there is no obligation to have a body shape at all.
The measurement techniques underlying all of this come from anthropometry, the study of human body measurement, which has established protocols for landmark identification and tape placement used in research and national health surveys. Those protocols are considerably more rigorous than anything achievable at home with a tape measure, which is one reason home measurements should be treated as approximate.
On the health side, the research direction over the last two decades has moved toward waist-based measures and away from weight-based ones as individual screening indicators, on the grounds that where tissue sits appears to carry information that total mass does not. That research concerns population-level risk stratification. It has nothing to say about body shape categories, which remain what they have always been: a clothing industry convenience that escaped into everyday language.