How to Cut Memory Foam Mattress Topper | Simple Ways You Don’t Know


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This article is majorly meant to educate us on how to cut memory foam mattress topper; tools used to cut foam, cut foam, and lots more, as discussed in it.

A mattress topper is one of the most used complements to guarantee the mattress’s protection. It is also known as a topper. This accessory is a mattress with a thickness of between five and ten centimeters placed on the standard mattress. Its function is to protect the rest equipment from wear, dirt, and external elements that can influence its deterioration. It can also serve to improve the characteristics of the mattress, providing more extraordinary softness, adaptability, and comfort.

Understanding the Meaning of Mattress Topper

The topper or mattress topper is a layer of material placed on the surface of the mattress. It tries to complement any lack that the layers of padding have.

This is usually a thin mattress, often with a height between 3 and 10 centimeters. It is generally adjusted to the rest equipment through some fastening system. The most common are elastic band systems in the corners, Velcro sidebands. These are fixed to the mattress handle, through elastic bands placed horizontally in various places on the bed. And even with an elastic band as if from a sheet. Low is involved.

On some occasions, it may happen because the quality of the mattress is not very good. And it does not adapt to the rest needs of the sleepers who use it. Or because over the years, the adaptive properties of the padding may be reduced. The mattress loses performance in terms of comfort. We then consider whether to change the entire mattress or postpone the change and try to improve the comfort of it.

When we opt for the second option, which is the cheapest, the best alternative to increase the quality of our rest is to place a top mattress.

A mattress topper can modify the adaptability of a bed, turn a hard and not very comfortable mattress into a piece of comfortable rest equipment on which it is possible to sleep adequately.

Understanding the Meaning of Mattress Topper

Types of Mattress Topper

The most common mattress toppers are usually made of memory foam, but there are also latex, micro-springs, hypoallergenic fibers, feathers, and even silk, cotton, and natural fibers. Below we show you the most common types of mattress toppers and the suitability of each of them.

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Fiber Topper

Hypoallergenic fibers icon. It consists of a layer of synthetic hypoallergenic fibers inserted in a fabric cover, in most cases closed.

This is the only 100% machine washable option, but it is also the one that offers the worst results in terms of improving comfort on the mattress. It is usually used by scorching people who sleep on memory foam mattresses, without thermoregulatory treatments, on the hottest days of the year.

how to cut a foam mattress thinner

Viscoelastic Topper

Viscoelastic icon. It is the most common type of mattress topper. It consists of a layer of dense, usually between 3 and 6 cm in height (depending on the need for extra adaptability of the mattress users), inserted into a stretch fabric cover.

This cover, which is often removable with a zip, usually has a summer side, upholstered in breathable 3D mesh fabric, and a winter side, for more excellent reception in the colder months. This type of mattress is often recommended to people who want to soften their mattress’s firmness, making it more adaptable and comfortable. It is also one of the most economical and practical solutions.

mattress topper too big

Latex Topper

Latex icon. It is often a type of mattress topper that incorporates a layer of latex among its materials. This latex can be a synthetic formula or Talley latex, more expensive but more flexible, breathable, and durable.

The components that make it up to include a thick layer of hypoallergenic fibers, which create natural ventilation channels between the user and the sleeping surface. Air circulates freely at all times.

They are enough between the sleeper and the mattress’s surface, through which the air circulates freely at all times. It is recommended for older people, due to the ease of changing position they offer, and also for very corpulent and incredibly hot people who flee from the feeling of sinking into the mattress.

is it safe to cut a memory foam mattress

Down Topper

Many people seek the feeling of maximum softness on their bed without feeling overwhelmed. For all of them, a good option may be a down mattress topper.

The quality of the topper will be better, depending on the core’s recovery capacity. And the homogeneity in the distribution of the fillings. To achieve the same amount of down in each area of ​​the topper, individual chambers are often created, filled with the same amount of material.

In this way, they avoid down accumulations in some areas and the lack of padding in others. It is a higher investment than viscoelastic toppers, but with the advantage of having a lower weight that facilitates better transport and storage if not needed. However, it is a very suitable option for hot or sensitive people to changes in temperature.

shaping memory foam

Tools You Need to Cut Memory Foam Mattress Topper

Measuring Tape

25 Foot Tape Measure by Kutir - Easy to Read, Both...
4,034 Reviews
25 Foot Tape Measure by Kutir - Easy to Read, Both...
  • ✔ 7 Feet Stand Out Made Measuring Easy: With a sturdy matte blade measuring 0.15mm thick stand out till 7 FEET, this 25 foot tape measure is strong and durable, making it an essential for everyone from everyday homeowners, interior designers to professional handyman, carpenter, metal or wood workers and architects.
  • ✔ Accidental Drop Protection With Shock-Absorbent Case: The casing of our retractable measuring tape is made out of a top grade rubberized material that is conveniently shock-absorbent. It has even been tested for quality assurance purposes in our labs.
  • ✔ Working Alone Became Easier with Magnetic Hook: The end of the measuring tape is outfitted with a powerful magnet, allowing you to get a proper measurement without all the fuss. Simply attach the end of the ruler to any metal surface to keep it in place while you get the measurements you need.


Amazon Basics Fine Point Tip Permanent Markers,...
39,369 Reviews
Amazon Basics Fine Point Tip Permanent Markers,...
  • 12-pack of black permanent markers for home or office; non-toxic, conforms to ASTM D4236
  • Durable fine point creates bold marks and clean lines—great for writing, doodling, and drawing
  • Quick-drying, waterproof ink; smear proof and fade resistant



COSCO Deluxe 6 foot x 30 inch Fold-in-Half Blow...
15,750 Reviews
COSCO Deluxe 6 foot x 30 inch Fold-in-Half Blow...
  • Secure Lock - Keeps table closed when transporting
  • Comfort Handle - Comfortable to carry when folded and locked
  • All Season Table Top - Indoor and Outdoor Use

Electric carving knife

Hamilton Beach Electric Knife for Carving Meats,...
15,984 Reviews
Hamilton Beach Electric Knife for Carving Meats,...
  • Perfect for Meats & breads: Easily carves through everything from meats, breads and tomatoes to crafting foam for DIY projects; it's also a great turkey carving knife on Thanksgiving.
  • Stainless steel blades and fork: This Electric knife features reciprocating serrated blades that create even slices and the included Fork is handy for carving and serving.
  • Ergonomic Handle: Designed to fit comfortably in either hand, The Electric carving knife handle is designed for Comfort and gives you better control no matter what you’re cutting.

How to Cut Memory Foam Mattress Topper

how to cut memory foam mattress topper

Memory foam is a prominent material used for mattresses and pillows because it is comfortable and matches your body. If you have too large a memory, you can easily cut it at home with an electric razor. Be sure to check your dimensions before making your cut, so you don’t make a mistake. When you’re done, you’ll have a piece of memory foam that’s perfect.


Remove the cover if you cut a memory foam mattress. Many new memory foam mattresses have a sliding cover on top for extra protection. Find a zipper around the edge of the mattress and unpack it as much as possible. Once the zipper has been removed, peel off the mattress sliding cover edges and remove it. As you cut the mattress, you can either throw away the cover or use the material to create a new body.

  • Either throw away the cover or use the material to create a new cover.
  • If there is no zipper around the edge of the grinding deck, you may need to cut it off with a knife or scissors.
how to cut memory foam mattress topper


Check the dimensions you need and add them. Use a tape measure to check the height, width, and depth of foam you need for your project. For example, you can measure a mattress if you cut a memory foam top or find a pillowcase’s dimensions if you make a pillow. Add to each measurement you take, as cutting through the foam may remove some of the material.

shaping memory foam


Mark the memory foam with a permanent marker and a tape measure. Hold the end of your tape measure on the edge of your memory foam and pull it out to the correct length. Draw a dot on the memory foam with a permanent marker at the end of your measurement. Move your tape measure along the edge of the mattress and make a new point to align with the first. Keep marking the memory foam until you reach the other side. Repeat the process for all different dimensions that you plan to cut.

how to cut down a mattress topper


Double-check your dimensions to make sure they are correct; otherwise, you may make a crooked cut.

  • Draw your cut lines on the foam with a marker. Lay a straight line on top of the memory foam to pass the marks you made for your measurements. Use a permanent feature to draw your lines between sizes, so you know where to make your incisions. Make the lines thinner, so your cuts and dimensions are accurate.


If you are drawing a curved line, use a round object as a template, like a coffee can or mug.

Lay the foam on a table so that the side you cut hangs over the edge. Find a flat, sturdy table to put the memory foam on. Lay the memory foam on the table so that its cut lines are above the table’s edge. That way, you won’t damage the tabletop when cutting through the foam.

how to cut memory foam pillow


Place a heavy object on a piece of memory foam to help hold it in place if it rolls over the edge. Make sure the item is at least from your cut line, so the foam doesn’t compress.

Hold an electric cutting blade perpendicular to the memory foam. Plugin your electric blade and hold it with your hand. Ensure that you Position your knife well till the blade is at a 90-degree angle to the edge you cut to make a smooth, straight cut. Make sure the ribbed trim touches the memory foam and lines up with the line you drew.

cutting memory foam with electric knife


You can buy an electric cutting knife at any kitchen outlet or online. An electric knife gives you the smoothest cut, but you can also use a knurled bread knife if you don’t have an electric knife.

Guide the knife along the line you pulled on the foam. Turn on your electric knife and slowly follow along the cursor line. Ensure that your knife is on a vertical position of the foam, so your cut is not skewed. Avoid pushing the foam down while cutting, as it can warp and make your cut incorrect. Continue going the blade through the foam along the line until the entire length is shortened. When you need to remove the blade from the foam, turn it off before removing it.

mattress topper cut to size


Keep your fingers and the blade cord away from the blade while running, so you do not injure yourself.

If you use a knurled bread knife, look back and forth to make your cuts.

Cut along the line again if the blade does not pass through the foam. If you cut a thick piece of memory foam, your knife blade may not cut it completely. Insert the carved blade at the end of the cutter again and follow the line too. Work slowly so that your cut remains straight and correct. Continue making several passes over the cut until the blade is entirely through the foam. Repeat the process for all other dimensions you need to cut from the memory foam.

mattress topper cut to size


You can also flip the foam piece to the other side and retake your measurements. Cut the memory foam so that your two cuts meet in the middle.

  • You can use a straight razor or a serrated bread knife if you want, but it won.
  • Keep your fingers and the blade cord away from the blade while it is on.

Advantages of Using a Memory Foam Mattress Topper

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Increase the durability of our mattress

The use of a mattress topper is the right way to increase the duration of our rest equipment. Every night, when we go to sleep, our mattress undergoes little by little, the deterioration and deformation produced by our body’s continuous pressure. Depending on the quality and materials with which it is made, this deterioration will become evident sooner or later, affecting our rest’s quality.

Using a mattress topper, we incorporate an additional layer to the surface of the mattress, and it will be the one that receives most of the weight and pressure of our body. It will be this layer and not the mattress that suffers the most significant deterioration due to use, and therefore our mattress will be in optimal conditions for rest for a longer time.

Increases the breathability of the mattress

During the night, our body emits moisture. The use of a mattress topper with breathable materials that facilitate the free entry and exit of air on the sleeping surface prevents this moisture from seeping into our mattress and damaging it. But if you want to protect both your mattress topper, if you are a hot person and suffer from excessive sweating when sleeping, we recommend the laboratory-tested cold effect mattress cover, which you can find in Express Mattress. You can place it on your bed, like a bottom, and you can enjoy the latest in thermoregulatory materials for the best rest.


Using a mattress topper prevents bacteria, mites, and dead skin from coming into contact and accumulating on the mattress. In many cases, the toppers are removable, which facilitates their washing and sanitation. Although the maximum protection for your bed, you will always get it with a good mattress cover.


Either due to deterioration, daily use, deformation of its foam or memory foam, or the low maintenance of the mattress that has accelerated its decline, changing a mattress topper is usually much cheaper than having to change the entire mattress.

Easy to Transport

On many occasions, we do not know if the bed on which we are going to sleep on vacation will meet our needs for a good rest. Or, we know perfectly well that it won’t.

Many users choose to travel with an individually tailored topper for both situations adapted to their needs to guarantee a good rest during their vacations.

After all, rest days are, among other things, to make the most of the hours of sleep, and the risk that this is not the case is a concern that many do not want to have. The ease of rolling offered by the top mattresses, especially those made of down and 3 cm thick memory foam, makes this task easier.

Most Related Frequently Asked Questions and Answers

Is gel foam the same as memory foam?

On many occasions, we also hear the term gel foam, and some confuse this term with memory foam. However, the differences between the two are notable.

Memory foam or mattress topper is a thin fabric that fully or partially covers the mattress and is placed as a bottom sheet. Its primary function is to protect the mattress from possible stains, mites, and bacteria, and there are even breathable and waterproof ones with cold effect treatments.

On the contrary, the gel foam will only cover the upper part of the mattress and provides an extra layer of padding material, which improves the adaptability and general comfort of the mattress where we are going to sleep.

From Express Mattress, we always recommend using a mattress cover to offer maximum protection to our mattress and improve the quality of sleep of the sleepers, whether you sleep on a mattress or if it is done on a mattress that has a top mattress on top.

When should I use a mattress topper?

Although in a general way its use serves to improve the adaptability of our old mattress as well as to reduce its wear and tear due to its daily use, toppers or mattresses are a particularly recommended option in the following cases:

We can use a mattress topper when the mattress we have does not adapt enough to our way of sleeping, and we consider that it is not yet time to change the mattress, or we do not have a very comfortable budget to do so. When we notice that when sleeping on the side, the shoulder and hips receive high pressure, or when sleeping on the back, we feel that the lower back does not receive the welcome we need for greater relaxation, it is an excellent time to place a mattress on our bed.

The main goal is always to try to find the best possible back alignment. In this way, we will not only be investing in greater comfort, but we will also be preventing future injuries due to poor posture when sleeping.

It is also a good investment in rest if our temporary rental house’s mattress or our vacation accommodation is too rigid or firm, and we will be there for a long time. Still, we do not want to make a large investment by buying a new mattress that we cannot take later.

One of the couple members considers that they need an additional contribution of firmness or softness on their side of the bed because their comfort needs have changed over time. More so, it is beneficial to use a unique topper, half the bed’s size, which allows both users to enjoy the highest quality of rest when sleeping together.

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What is the best way to use a memory foam mattress?

Memory foam mattress toppers are not made from the most environmentally friendly materials. Their breakdown can lead to the release of hydrogen cyanide, isocyanides, and flame retardants, all of which can harm the environment. For this reason, you should make an effort to recycle your mattress topper by donating it to friends, family, or charities. But if it is in poor condition, you should leave it at manufacturing houses and recycling centers or reuse it yourself with a little creativity.

What is the best way to cut a memory foam?

Use memory foam as a bean bag chair padding alternative. Many bean bag chairs are filled with memory foam, making them a great way to reuse your memory foam mattress. Cut the foam into smaller pieces (about 2 inches long), unbuckle the chair. And replace some or all of the old fillings.

Pouf chairs are usually made of expanded polystyrene, expanded polypropylene, compressed foam, memory foam, or other materials. Memory foam is an excellent replacement if these materials start to age or if you want to try something new.

Article Summary

We believe this article has helped us a lot with cutting memory foam mattress topper and other relevant topics.

A quality mattress topper is an excellent way to extend our old mattress’s useful life. When, for whatever circumstance, we consider that it is not yet time to change it for a new one. If you are looking for bed comfort, a topper or mattress topper. It is the ideal rest equipment to multiply your mattress’s reception. Even on mattress models that have been in use for years, you can increase their useful life.

It is an option that is usually also common in people who have bought a mattress not long ago. And it does not convince them by firmness and adaptability.

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