Neckfit

How to Measure Pillow Size: The Complete At-Home Guide

Walk into almost any shop selling pillows and you will see the same scene play out. Someone picks up a pillow, presses it with their palm a couple of times, holds it against their neck for three seconds, and either nods or moves on to the next one. That is it. That is how most people in India decide on a pillow that they will rest their head, neck and shoulders on for roughly seven to eight hours every single night, for years.

Online shopping has not really solved this problem either. Instead of pressing a pillow with your palm, you are now clicking a size label that says "Small," "Medium," or "Large." These labels feel reassuring because they look like sizing systems we already understand, like clothing sizes. But a pillow is not a t-shirt. Your neck length and the width of your shoulders are two very specific, personal measurements, and a "Medium" designed around some average, hypothetical body may not match your body at all. That mismatch is a big part of why so many people quietly own two or three pillows that never quite feel right, why they wake up with a stiff neck more mornings than they would like, and why they keep folding a pillow in half or stacking two together to try and get the height "just right."

The good news is that pillow size does not have to be a guess. Your neck length and your shoulder broadness are two measurements you can take at home in about five minutes, with nothing more than a soft measuring tape and a plain wall. Once you have those two numbers, choosing between pillow heights stops being about squeezing, hoping, or reading vague labels, and becomes something closer to buying shoes in your actual size instead of guessing between "big" and "small."

This guide is the deep, detailed version of that measuring process. If you have already seen our short reference page on how to measure, you know the two measurements by name: DICOP for neck length and DEWA for shoulder broadness. What this article adds is everything around those two steps — why each measurement matters, exactly how to take it without small errors creeping in, the mistakes that quietly throw off the numbers, what to do when your result falls between two sizes, how measurements connect to actual pillow height, and how to measure other people in your family with confidence. By the end, you should be able to measure yourself once, correctly, and never have to guess at a pillow shelf again.

Why Pillow Size Should Be Based on Your Body, Not Guesswork

Think about how much human bodies vary in just two dimensions: how long someone's neck is, and how broad their shoulders are. Stand two adults of the same height next to each other and you will often find one has a visibly longer neck than the other, or noticeably broader shoulders. These are not small, ignorable differences. They are the two measurements that most directly decide what height of pillow will keep your neck and spine comfortably supported while you sleep.

Here is the part that a lot of people never stop to think about: a pillow height that feels perfect for your friend, your spouse, or the model in a product photo may not do anything close to the same thing for your own neck. If your neck is on the longer side and you use a pillow that is too short, there is a real gap between your head and the pillow surface that your neck muscles end up trying to fill all night, tensing to hold your head up rather than actually resting. If your neck is shorter and you use a pillow that is too tall, your head gets pushed upward and forward, again taking your neck out of its natural, relaxed line. Neither situation is dramatic on any single night, but repeated night after night, it adds up to exactly the kind of stiffness, discomfort and morning ache that so many people simply accept as normal.

The same logic applies to shoulder broadness, especially if you sleep on your side, which most people do for at least part of the night. When you lie on your side, your shoulder is the part of your body that touches the mattress first, and it lifts your head and neck away from the mattress surface by a certain amount depending on how broad your shoulder is. A broader shoulder lifts your head higher off the mattress, so it needs a taller pillow to fill that gap and keep your neck level with your spine. A narrower shoulder does not lift the head as much, so the same tall pillow would over-lift the head and tilt the neck sideways instead of keeping it straight.

This is really the whole argument for measuring rather than guessing: your neck length and shoulder broadness are specific to you, they do not always move together in a predictable way (someone can have a long neck and narrow shoulders, or a short neck and broad shoulders, or any other combination), and a generic "Medium" pillow is, by definition, built around an average of many people rather than your own two numbers. Sizing a pillow to your own measured neck length and shoulder broadness removes that guesswork entirely. It is also the reasoning behind pillows like Neckfit Plus and Neckfit Sorpresa, offered in 24 personalised sizes precisely because no single height can serve every neck and shoulder well. For people who have struggled for years with a pillow that never quite fit, this kind of fit-first approach is reported to relieve neck, back, shoulder and upper-arm pain and cervical spondylosis symptoms in more than 90% of users, though individual results can vary and this is not a guarantee for every person or condition.

What You'll Need Before You Start

One of the reassuring things about this whole process is how little it actually requires. You do not need any special equipment, an app, or anyone else's help, although a helper can make things slightly easier. Here is what to keep ready before you begin.

A soft, flexible measuring tape. This is the single most important tool for accuracy, and it is also the most common thing people get wrong. A rigid ruler or a stiff measuring scale simply cannot follow the curve of the back of your neck or the shape of your shoulder and body against a wall. When you try to use a rigid ruler for a curved measurement, you end up either holding it at an angle (which adds error) or trying to bend it (which it was never designed to do). A soft measuring tape, the kind tailors use for stitching clothes, bends naturally along the curve of your neck and lies flat against your skin, which is exactly what gives you an accurate reading. If you do not have one at home, they are inexpensive and available at almost any tailoring shop, general store, or online, and it is worth getting one before you measure rather than trying to make do with a ruler or a scale.

A plain wall. You will need about a metre of clear wall space, free of furniture, decorations, or anything that would stop you from standing with your side pressed flat against it. Good lighting in the area helps too, since you will be trying to feel for small anatomical landmarks and it is easier to be precise when you are not measuring in a dim corner.

A helper, if you can find one. Measuring is genuinely possible to do alone, and later in this guide we explain exactly how to manage the DICOP measurement solo. But if a family member, roommate, or friend is around, having them hold the tape steady and read the number for you removes a small amount of hand-eye guesswork and tends to give you a slightly more consistent result. Neither method is "wrong" — solo measuring works perfectly well once you know the technique — but a second pair of hands is a nice-to-have.

About five minutes, and clothing that is not bulky. A thin t-shirt or something close-fitting around the neck and shoulders is ideal. A thick sweater, a padded jacket, or a hoodie with a bunched-up collar can add a surprising amount of false bulk exactly where you are trying to measure, which we will cover in more detail later in the common mistakes section. You do not need to undress or measure against bare skin — just avoid anything heavy or padded around the neck and shoulder area.

That is genuinely the entire list. No app, no calculator, no special posture training. Just a soft tape, a wall, a few minutes, and the willingness to take each measurement two or three times to be sure of the number.

Step-by-Step: Measuring Your Neck Length (DICOP)

DICOP stands for the Distance between the C7 vertebra and the Occipital Protuberance. In plain language, it is the distance from the point where your neck meets your back to the bony bump at the base of the back of your skull. This single measurement tells us how long your neck is, which is the main factor in how much height a pillow needs to provide right under your head and along the curve of your neck.

Finding the C7 Vertebra

The C7 vertebra is the seventh bone in your cervical spine, and it is the landmark most people can feel without any medical training, because it is usually the most prominent bump you can find at the base of your neck, right where your neck transitions into your upper back. To find it:

  1. Sit or stand comfortably and tilt your head forward, chin toward your chest, as if you are looking down at your feet.
  2. Run your fingers along the back of your neck, starting from just below your hairline and moving downward toward your upper back.
  3. As you move down, you will feel one bump that stands out more than the others when your head is tilted forward — this is almost always the C7 vertebra. It tends to be the most noticeable bump at the base of the neck, more prominent than the vertebrae just above it.
  4. Press gently on this bump with one finger to mark its position in your mind, or hold your finger there while you bring your head back up.

If you are not fully sure whether you have found C7 or the vertebra just above or below it, do not worry too much — being off by a few millimetres will not meaningfully change your final measurement, since we are looking for a fairly broad size range rather than lab-level precision. The important thing is to consistently identify the most prominent bump at the base of the neck.

Finding the Occipital Protuberance

The occipital protuberance is the small, rounded bump you can feel at the lower back of your head, right where your skull ends and your neck begins. It sits on the midline of the back of the head, roughly in line with the top of your ears or slightly above.

  1. Bring your head back up to a natural, relaxed, straight position — not tilted forward anymore, and not tilted backward either.
  2. Place your fingers at the base of your skull, right at the point where the back of your head meets the top of your neck.
  3. Feel gently for a small, rounded bony bump along the centre line of your head. It is usually easy to feel if you press lightly and move your fingers in small circles around that area.
  4. This bump is your occipital protuberance, and it is the second and final landmark for this measurement.

Taking the Actual Measurement

Once you can reliably find both landmarks, taking the measurement itself is straightforward, whether you are doing this alone or with a helper.

  1. Stand up straight in a natural, relaxed posture — the same way you would stand if you were waiting for a bus or chatting with someone, not artificially stretched tall and not slouched. This natural posture matters more than people expect, and we will explain why in the mistakes section below.
  2. Locate your C7 vertebra again using the method above, and hold the zero end of your soft measuring tape right at that point. If you have a helper, ask them to hold the tape end steady here while you keep your head in a relaxed, upright position.
  3. Let the tape run upward along the natural curve of the back of your neck, following the skin rather than pulling straight through the air. This is exactly why a flexible tape matters — it should bend gently along the curve just as your neck does.
  4. Bring the tape up to your occipital protuberance, the bump you located at the base of your skull.
  5. Keep the tape flat against your skin along its entire length. It should not be pulled so tight that it compresses your neck or flattens the natural curve, and it should not be left loose or sagging either — a loose tape will give you a longer reading than is accurate, and an overly tight one can give you a slightly shorter one.
  6. Read the measurement at the point where the tape reaches your occipital protuberance, to the nearest half centimetre if you can manage it.
  7. Note this number down immediately, before you forget it or second-guess yourself.
  8. Repeat the entire process two more times, resetting your posture in between each attempt rather than just re-reading the same tape position. Taking three independent readings and comparing them is the best way to catch a one-off error.

Measuring DICOP Solo

If nobody is around to help, you can still take this measurement accurately by yourself. Hold the zero end of the tape at your C7 vertebra with one hand, pressing it lightly against your skin with your thumb so it does not slip. With your other hand, guide the tape up along the back of your neck to your occipital protuberance. Doing this in front of a mirror, positioned so you can see the side of your head and neck, helps you confirm the tape is running straight rather than drifting to one side. Take your time — repeating the measurement a few times matters more than doing it quickly.

If the Number Seems Unusual

Occasionally, someone measures and gets a number that feels surprisingly large or surprisingly small, and starts to doubt whether they did it correctly. Before assuming you made an error, check your posture first. The most common reason for an unusual reading is standing in a posture that is not natural — either slouching forward, which shortens the apparent distance, or straining to stand unnaturally tall and stiff, which can stretch the neck slightly longer than it would be in your normal resting posture. Reset yourself into a relaxed standing position, take a breath, let your shoulders settle, and measure again. If your three repeated readings come out close to each other (within about half a centimetre or so), you can trust the number, even if it feels different from what you expected.

Step-by-Step: Measuring Your Shoulder Broadness (DEWA)

DEWA stands for Distance from Ear to Wall. This measurement captures how broad your shoulders are by measuring how far your ear sits from a wall when your shoulder and the side of your body are pressed flat against that wall. The broader your shoulder, the further your head and ear naturally sit from the wall in this position, because your shoulder is effectively pushing your upper body outward from the wall. This measurement matters most for how a pillow supports you when you sleep on your side, since a broader shoulder needs more pillow height to keep your neck level with the rest of your spine, while a narrower shoulder needs less.

Setting Up the Position

  1. Stand next to a plain wall, sideways to it, so that one entire side of your body — your shoulder, upper arm, and the side of your torso — can rest flat against the wall.
  2. Press that side of your body firmly and completely against the wall. "Flush against the wall" means your shoulder, the side of your upper arm, and the side of your body should all be touching the wall at the same time, not just your heel or the back of your shoulder blade poking against it. Gaps between your body and the wall are one of the most common sources of error in this measurement, which we cover in more detail below.
  3. Extend the arm that is closest to the wall forward, away from your body, at roughly shoulder height, and let it relax there rather than holding it stiffly. Your arm should be reaching forward, not resting down by your side and not raised up above your shoulder.
  4. Keep your head facing forward in a natural position, not turned toward or away from the wall.

Holding the arm forward matters more than it might seem. When your arm hangs down naturally at your side, the muscles and the shoulder blade sit in a slightly different position than when the arm is extended forward, and this changes how much of your shoulder is actually pressing against the wall. Extending the arm forward opens up the shoulder into the position that most closely matches how your shoulder behaves when you are lying on your side in bed with your arm resting in front of you, which is exactly the situation this measurement is trying to represent.

Finding the Tragus

The tragus is a small, firm flap of cartilage located right in front of your ear canal — not the earlobe, and not the outer curved rim of the ear, but the small pointed piece that sits just in front of the opening of your ear canal. You can find it easily: gently press one finger into the little indentation right in front of your ear hole, roughly level with your nostrils, and you will feel a small firm flap. That flap is the tragus, and it is the exact point you will measure to.

Taking the Actual Measurement

  1. With your shoulder and side flush against the wall and your arm extended forward as described above, hold the zero end of your measuring tape flat against the wall, at the same height as your ear.
  2. Extend the tape in a straight, horizontal line from the wall to your ear.
  3. Read the measurement at the point where the tape reaches your tragus — not your earlobe, and not the outer edge of your ear.
  4. Keep the tape level and horizontal throughout — it should not angle upward or downward, since that would give you a longer or shorter reading than the true horizontal distance.
  5. Note the number down.
  6. Turn around and repeat the entire process on your other side, with your other shoulder against the wall.

Common Mistakes Specific to This Measurement

This measurement has a few specific ways it can go wrong, and it is worth checking for each of them:

Why You Should Check Both Sides

Almost everybody has some small natural asymmetry between their left and right shoulder, so do not be surprised if your two readings are not identical. A difference of half a centimetre or so is completely normal. If you notice a much larger gap between sides, repeat both once more and check that your body was equally flush against the wall and your arm equally extended each time. Once confident in both numbers, use the average, or simply go with the side you sleep on more often.

Common Measuring Mistakes and How to Avoid Them

Even with clear instructions, a few small habits can quietly throw off your measurements. Here are the ones worth watching for specifically.

What Your Measurements Mean for Pillow Height

Once you have your DICOP and DEWA numbers, it helps to understand — at least in general terms — what they actually tell you about pillow height, even before you look at any specific size chart.

As a general rule, a longer neck (a larger DICOP measurement) typically needs a bit more support height along the part of the pillow that cradles the back of the neck and head, so that the head is not left dropping backward into empty space. A shorter neck generally needs less height in that same area, since too much height would push the head forward and upward out of a relaxed, neutral position.

Shoulder broadness works on a similar principle, but it matters most when you sleep on your side. Broader shoulders (a larger DEWA measurement) lift the head further away from the mattress when lying on your side, so they generally need a taller pillow to fill that gap and keep the neck and spine in a level line. Narrower shoulders do not lift the head as much, so they generally need a shorter pillow on that side — a pillow that is too tall for narrow shoulders can tilt the neck upward at an angle instead of keeping it level.

What makes this genuinely useful, rather than just a rough rule of thumb, is that these two measurements do not act alone — they combine. Someone with a long neck and narrow shoulders needs a different profile than someone with a long neck and broad shoulders, or a short neck and broad shoulders, and so on. This is exactly why a single "Medium" cannot serve everyone well, and why Neckfit converts these two measurements together into one of 24 personalised sizes across the Neckfit Plus and Neckfit Sorpresa lines, rather than offering just three or four generic options. Each size reflects a specific combination of neck length and shoulder broadness, so the pillow you end up with is built around your actual body rather than an average one.

Every once in a while, someone's combination of measurements falls outside the range that the 24 standard sizes cover — this is uncommon, but it does happen. In those cases, rather than forcing you into the closest available size, the team gets in touch to talk through your measurements and any specific needs, and arranges for a fully custom pillow to be made. This does take a little longer than the standard process — usually around 9 to 10 days compared to the roughly 5 working days for a standard personalised size — but it means that even an unusual combination of measurements still gets a properly fitted result rather than a compromise.

If you would like the short, quick-reference version of the measuring steps to keep handy, you can find it on our how to measure page. If you would rather skip manual calculation altogether, our size finder tool takes your two measurements and works out the matching size for you automatically. And once you know your size, you can browse the full range on the shop page.

What If My Measurements Are Between Two Sizes?

It is genuinely common to measure yourself carefully, following every step above, and still land on a number that sits right between two adjoining sizes. This is not a sign you did something wrong — with 24 sizes covering a continuous range of neck lengths and shoulder widths, some people will always fall close to a boundary.

If this happens to you, resist the urge to just guess and pick whichever size sounds closer. A few real-world factors can tip the decision one way or the other in ways that are hard to judge from measurements alone: your general body shape and build, the firmness of your mattress (a softer mattress lets your shoulder sink in more, which changes how much height you effectively need, while a firmer mattress does not), and whether you mostly sleep on your back, your side, or a mix of both through the night.

Because of these variables, the most reliable option when you are between two sizes is to reach out to a real person on the Neckfit support team, or message them on WhatsApp, sharing both measurements along with a little context — your usual sleep position, mattress type, and which two sizes you are torn between. A quick conversation with someone who has seen many similar borderline cases is far more likely to land you on the right choice than guessing alone.

How Often Should You Re-Measure?

A natural question once you have your measurements is whether they will stay accurate over time, or whether you need to repeat this process regularly. The honest answer depends on who is being measured.

For children and teenagers who are still growing, neck length and shoulder width can change noticeably over months, not years, so it is worth re-measuring periodically — for instance, every few months, or whenever a growth spurt seems to be happening — rather than assuming an old measurement still applies.

For most adults, neck length and shoulder width are generally quite stable once physical growth has finished, so you should not need to re-measure every few months the way you might check your weight. That said, a few specific situations are genuinely worth a re-measure:

Outside of these situations, you can generally treat your measurements as a one-time task rather than something to repeat on a schedule.

Measuring for a Partner, Parent, or Child

One thing worth saying plainly: everyone in your household likely needs a different pillow size, even people who are close in height or build. A couple sharing what feels like a "standard" pillow, or a family assuming that one size works for everyone from a teenager to a grandparent, is a common setup — and also a common reason why at least one or two people in that household are quietly sleeping on a pillow that does not really fit them.

The good news is that measuring each family member is just a repeat of the same simple process described above, done separately for each person. It helps to treat it as a small, unhurried activity rather than rushing through it — measuring a spouse, a parent, or an older child usually takes only a few extra minutes once you already know the steps yourself.

A couple of practical notes when measuring people other than yourself. Children may fidget or move mid-measurement, so take a few extra readings, go with the most consistent ones, and keep it light and quick rather than tedious. With elderly family members, be mindful of balance and comfort — standing sideways against a wall should never feel unsteady, so offer a hand for support, let them rest their free hand on the wall, and take a little more time so nobody feels rushed.

Frequently Asked Questions

Do I need to measure both my neck and shoulders?

Yes. Neck length and shoulder broadness affect different aspects of how a pillow supports you, and they do not always move together in a predictable way — someone can easily have a long neck with narrow shoulders, or the reverse. Using only one of the two measurements gives an incomplete picture, which is why both DICOP and DEWA are needed together to arrive at an accurate size.

What if I don't have a flexible measuring tape?

A soft, flexible measuring tape, like the kind used in tailoring, is strongly recommended because it can follow the curve of your neck and lie flat against your body at the wall, which a rigid ruler cannot do accurately. If you do not already have one, they are inexpensive and widely available at tailoring shops, general stores, and online, and it is worth picking one up before measuring rather than trying to make an accurate reading with a rigid ruler or scale.

Can I use a phone app to measure instead?

We would recommend sticking to the manual method with a physical measuring tape described in this guide. Anatomical landmarks like the C7 vertebra, the occipital protuberance, and the tragus need to be located by feel, and a camera-based measurement cannot reliably identify these points the way your own fingers can. The manual method takes only a few minutes and gives a dependable, repeatable result.

Does mattress firmness change the correct pillow height?

It can play a small role, particularly if your measurements put you right between two sizes. A softer mattress allows your shoulder to sink in somewhat when you lie on your side, which slightly changes how much additional pillow height you need compared to a firmer mattress, where your shoulder does not sink in as much. Your DICOP and DEWA measurements remain the foundation of your sizing either way, but mattress firmness is a useful extra detail to mention if you are unsure between two adjoining sizes.

How accurate does the measurement need to be?

You do not need laboratory-level precision. Getting your reading consistent to within about half a centimetre across two or three repeated attempts is a good, reliable standard to aim for. This is exactly why the steps in this guide repeatedly suggest taking each measurement more than once and comparing the results, rather than relying on a single reading.

What happens if I choose the wrong pillow size?

A pillow that is too tall or too short for your actual neck length and shoulder broadness generally will not offer the intended level of neck support, since it either leaves a gap under your neck or over-lifts your head out of a relaxed position. If you are ever unsure which size to pick, whether because your measurements are between two sizes or for any other reason, it is best to reach out to the Neckfit support team with your DICOP and DEWA numbers before ordering, so they can help confirm the right fit for you.

Bringing It All Together

Buying a pillow by squeezing it in a shop or picking "Medium" and hoping for the best is such a common habit that it rarely occurs to most people there is a better way. But your neck length and your shoulder broadness are real, measurable, personal numbers, and once you have them, choosing a pillow height stops being a guess and becomes something closer to a fitting. The whole process — finding your C7 vertebra and occipital protuberance for DICOP, and standing flush against a wall with your arm extended for DEWA — takes about five minutes, needs nothing more than a soft measuring tape, and can be done alone or with a helper, for yourself or for every member of your family.

You now have everything you need to measure yourself accurately: what to use, exactly where to place the tape, what mistakes to avoid, and what your numbers mean for pillow height. The most useful next step is simply to try it. Take your two measurements, note them down, and either work out your size using this guide or let our size finder tool do the calculation in a few seconds. From there, browse the personalised options in the shop, or, if your measurements turn out to be an unusual combination, ask about a fully custom pillow built around your numbers.

And if you are still deciding whether a personalised pillow is worth the change from whatever you are using now, it may help to read more about how a properly fitted pillow actually compares to an ordinary, one-size-fits-all one in our article on cervical pillow vs normal pillow. Either way, the two measurements in this guide are the same starting point, and they are yours to take whenever you are ready — no shop visit, no guessing, and no squeezing required.

This article is intended for general educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. If you are experiencing ongoing or severe neck, shoulder, or back pain, please consult a qualified doctor or healthcare professional.