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What Size Is Standard Crib Mattress

What Size Is A Crib Mattress Best Overall Guide

How to Wrap a Nonstandard Size Crib Mattress

If youre curious about what size is a crib mattress, it will depend on whether its standard or mini. This guide will explain the difference between these sizes to help you select the best one for your child. Much like other mattress types, even crib mattresses are offered in different dimensions.

Its useful to familiarize yourself with mattress sizing because it will benefit you when shopping or making a new one. Perhaps youre cutting foam, or youre looking for the crib itself. Nonetheless, its a simple topic to tackle, and you should know everything by the end of this article.

How Wide Is A Twin Bed

The average width of the single bed is 39″.

The Pros and Cons of a Twin Mattress Size


  • The cost of a twin size mattress is less than that of a larger size, though prices can vary depending on the quality selected.
  • Gives parents with young children the opportunity to provide a mattress that suits their needs and is not too big.
  • Can be a very great investment for those with a smaller amount of space to allow for their bed.
  • The Twin mattress dimensions measure 38 inches wide and 75 inches in length.
  • Available in both high quality and lower quality models.
  • Many bed frames that accommodate multiple children fit one or more twin size mattresses.
  • Twin bunk beds can save even more space and be a fun sleeping environment for children.


  • Often the length of a Twin mattress is not great enough to comfortably fit a full-sized adult.
  • Twin mattresses are not ideal for more than one person sleeping at a time.

How Wide Is A Queen Size Bed

The average width oftheQueen bed is 60″ or 152 cm.

The Pros and Cons of a Queen Mattress Size


  • The Queen Mattress Dimensions comfortably fit two adults.
  • The Queen Mattress is cheaper than a King or California King.
  • The Queen is also a generous size mattress for a single adult with pets or children.
  • As the most common mattress size, there are many different varieties and manufacturers.


  • The Queen mattress is not suitable for two adults and a pet or child. The King and California King offer plenty of room for a couple and pets or a child.

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Other Mattress Size Factors That Influence Your Decision

Buying a mattress is a long-term investment in your health, and there are a number of things to think about during your search for the best mattress. Almost all mattress types are available in all standard sizes, but factors like the size of your bedroom also have to be considered while deciding on the size of your mattress.

Does Your Crib Mattress Fit Into Your Crib

Standard size baby crib  measurements &  facts

If you already have a crib mattress, you can check if it fits perfectly into the crib. A two-finger home fitting test couldnt be easier and quicker. I recommend doing it with any crib mattress, new or used one! Better be safe than sorry!

This way, you can further check if you have chosen the right crib mattress size and make sure you didnt buy the wrong one. If there is a visible gap between the mattresss edge and cribs frame, place your fingers there. You shouldnt be able to fit more than two fingers in the gap!

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Super Single Bed Size / Three

Super Single beds are a throwback to the 1920s. Designed for one sleeper but often accommodating two, these beds are exceedingly rare on the market today. Only antique bed frames and military living quarters will require this size, so Gotta Sleep doesnt carry it. You’ll like to have to find a custom or specialty mattress store to get a mattress this size that is both comfortable and new.

Super Single bed dimensions measure 48″ × 75″. The average width of a single bed is typically 48″. The average length of a single bed is 75″.

The Pros and Cons of a Super Single Mattress Size / Three-quarters Mattress Size


  • The cost of a Super Single is typically lower than a Queen.


  • These mattresses are very rate and difficult to find.

How To Choose The Right Crib Mattress Size

So, you have the best and most beautiful crib for your baby. But what about a crib mattress? Picking the right size is one of the most important features you have to consider when buying a baby crib mattress. Only a crib mattress with the fitting dimensions will provide a safe sleeping environment for your little bundle of joy.

A crib mattress must fit snuggly into the crib! There should be as little space as possible between the mattresss edge and the cribs frame! Wider gaps increase the risk of injuries and suffocation! So, choose a standard-size crib mattress for a full-size crib, a crib mattress with smaller dimensions for a mini crib, and a right portable crib mattress for a Pack N Play or travel crib.

1. Are the dimensions of all standard-size mattresses the same?

Yes, as the name standard size crib mattresses tells by itself, are their dimensions standardized. A very small size deviation is allowed, but in general, we can say that the size of all full-size crib mattresses is the same.

2. Is there a one crib mattress size for mini cribs too?

No! You have to be a little more careful when choosing a mini crib mattress. Check up thoroughly if the mattress dimensions correspond to the interior size of your crib to fit snuggly into it.

The right crib mattress size is not the only thing you have to consider when buying a crib mattress! We have made a crib mattress buying guide, where you can find everything you need to know when buying a crib mattress.

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Standard Size Crib Mattress

Most crib mattresses. on the market are standard size and will fit standard size cribs. However, some may vary slightly in length and width and may be a potential safety hazard, if not fitted with the proper crib. So please take these measurements very seriously.

  • 51-5/8 inches in length and 27-1/4 inches wide
  • Never be greater than 6″
  • Can range between 4 and 6 inches for foam mattresses
  • Can range between 5 and 6 inches for coil mattresses

Click the link for tips on the best way to measure your baby mattress size accurately.

Thickness does not affect the safety of the mattress, but make sure you are using the correct sized crib sheet. The crib sheet should fit tightly over the corners of the mattress and tuck securely underneath it.

It is very important that the mattress fits snugly against each side of the crib. A mattress that doesnt fit properly might allow your infant to crawl beneath it.

I read that the Consumer Product Safety Commission issued these specifications to prevent suffocation and entrapment of a babys head between the sides of the crib and the mattress.

You must be aware of these consequences in order to keep your little one safe. click the following link for information on crib size. If the measurements that you take are slightly different, make sure it passes the finger test described below. Sometimes mistakes occur at the manufacturing side and crib mattresses are produced that do not follow the standard crib mattress size regulations.

Twin Bed Size Orsingle Bed Size

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Despite Twin being in the name, twin-sized mattresses are intended to be used by one person.

The Twin mattress dimensions are the smallest size available for adults and children, not including toddler and infant size. This makes it the perfect size mattress for a young child who has grown past the need for a toddler mattress. Twin mattresses are also great for those in adolescence or single adults. Due to its smaller size width and length, it is common in dorm rooms and spaces where more than one mattress is in place. Twin mattress dimensions are smaller and more affordable than larger mattresses.

Their small size means theyll fit well in most spaces. Its an immense size for growing kids to give them enough space to sleep and grow without taking up so much space in their room. Its also the most common bed measurements found in dorms due to their compact but comfortable size, though it’s a bit short for some college students. Because of that, a lot have switched to the Twin XL.

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Crib Mattress Size: Standard


As you might guess from the name, the standard crib mattress is the typical mattress size for baby cribs. According to the Consumer Products Safety Commission, a standard crib mattress should be no more than 6 inches thick and measure at least 27 1/4 inches wide and 51 1/4 inches long.

Tips For Selecting The Right Standard Crib Mattress

If you have a standard-sized crib for your little one to snooze in, youll need a standard-sized crib mattress. As we mentioned, the size of these mattresses is regulated. However, there is a bit of wiggle room within the regulated size of a crib. A standard crib can be of an inch larger or smaller than the regulated 28 by 52 rectangle. A standard mattress will typically fit a standard crib, but because of this small variation, you will still need to check to make sure your mattress fits properly not too big and not too small. Heres an example: if your crib is on the large side of the regulated measurements and your mattress is on the small side, you may end up with a gap in-between the mattress and the crib. Always check the fit before putting your baby in bed for the first time.

Whos Using The Mattress

This is one of the most critical factors to be considered while choosing the perfect mattress size. If you are an individual sleeper who does not share a bed with anyone, you can eliminate king and California king mattresses from your list queen, full, or full XL beds would likely be the most fitting. We recommend queen and full XL mattresses to those who prefer some space to sprawl, and full and twin XL options to sleepers who need to save space.

However, if you plan on sharing your mattress with a partner or child, youll want to choose a queen, king, or California king. If you and your partner like to co-sleep with your children, a king or California king would be better accommodating.

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Delta Children Crib Mattress Size

Delta Children is an established furniture brand for kids that carries two main models: Natural Slumber Two-Stage Crib Mattress and Cool Lux Two-Stage Crib Mattress. These mattresses are 52in x 27.5in x 5in, perfect for full-size cribs.

Delta Children produces mattresses using natural materials like waterproof woven fabric, fireproof natural cotton, and cotton foams. Their Cool Lux mattress contains a cooling gel memory foam for maximum comfort.

In addition, they have a limited edition Twinkle Stars mattress that you can purchase from Amazon.

They have co-created mattresses with other brands like Serta and Beautyrest that are full size and vary only in thickness and materials.

Small Single Size Bed Dimensions

85 reference of crib mattress toddler size in 2020 ...

30 inches by 75 inches

Minimum recommended room size: 7 feet by 10 feet

Single mattresses and twin mattresses have the same dimensions, so these terms are often used interchangeably. However, the twin size is much more common nowadays, so if you have your eye on a single bed, a twin is just what you need.

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As a new parent, there are so many items youll need to purchase for your little one, but one item that tops the list is a crib mattress. There are a surprising number of crib mattresses to choose from, so it can help to start with this informative guide that shares the standard crib mattress dimensions along with tips on how to choose the right crib, and mattress, for your bundle of joy.

If your baby is sleeping in a crib or bassinet, a mattress is essential,” says Ariana Witkin, MD, board-certified pediatrician and postpartum coach. And it’s important to make sure you use the correct size for the crib or bassinet in use.

“The mattress should fit snugly in the sleep environment and there should be no gapsthere should be less than an inch between the mattress and the crib when the mattress is pushed up against one side, says Witkin.

Below, find everything you need to know about crib mattress dimensions and the various types of crib mattresses out there, as well as answers to your most common questions about crib mattresses.

Pack N Plays Or Travel Cribs

You could choose to go the route of a crib that can be stowed away when youre not using it, like pack n plays and travel cribs.

They also come in handy when youre traveling, and your baby will be used to sleeping in it already, so double win!

The only problem with these is that they can be expensive, and constantly breaking them down and setting them up is a pain.

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When Making A Move To The Crib Take Care Of The Following And Youll Be Good To Go:

Start Small: Make the switch in stages, this will help the baby get comfortable and accustomed to the crib and the mattress.

Security: You should make sure your babys crib is of the best security standards and meets the latest guidelines. This will not only give your baby a safe sleep but also give you peace of mind during the transition. Follow these simple safety guidelines.

  • There should be no loose or sagging pieces on the crib.
  • Use a firm mattress.
  • Babies should only be placed on their backs to sleep.
  • Dont cover your baby with a blanket or comforter. Use a sleep sack or warm pajamas.
  • Dont place stuffed toys in the crib.
  • Bumper pads are unnecessary and potentially dangerous.
  • Careful periodic inspections of the crib for any breakage or damage.

Routine: Make the crib part of your babys routine. Also, nows the time to establish some night-time rituals like bathing, feeding, snuggling, and playing. Your baby will gradually accept that the crib is a safe, secure part of their daily routine.

  • You should sleep with your baby in the same room for the first year.
  • If the crib is too large to fit in your bedroom, set up a place to sleep in the nursery.
  • Have your baby spend some time in the crib every day.
  • Remember that babies need security, familiarity, and routine to feel safe.
  • When its time to sleep separately, ease your worries with a baby monitor.

What Size Is A Standard Crib Mattress

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Measurements of standard size baby cribs and standard crib mattresses are regulated by the government!

U.S. regulations define:

  • a standard size crib is a baby crib with the following measurements: 52 38 ± 58 inches in length by 28 ± 58 inches in width
  • a standard crib mattress is a baby crib mattress with the following measurements: at least 27 1/4 inches by 51 5/8 inches and no more than 6 inches thick

Any new full-size crib mattress fits into any new standard size baby crib. Just, make sure you choose a firm and safe mattress for the crib!

If you use an older mattress, check if its still firm and fits tight in the crib. Press on the mattress with your hand, if it springs back in place quickly, its firm enough. Also, make sure there is a room for no more than two fingers between the side of the crib and the edge of the mattress. That way your baby cant slip in and get trapped between the mattress and crib side.

The mattress and the crib have to meet all Crib Safety Standards, to ensure the safest sleeping environment for your baby!

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What Are The Correct Dimensions For A Crib Mattress

A standard crib has exterior dimensions of 28 by 52 inches. To ensure a snug fit, crib mattresses must have minimum dimensions of 27 1/4 inches wide and 51 5/8 inches long, and be no more than 5 inches thick. However, some exceed this by a quarter inch or so to ensure an extra-tight fit, especially in the corners. Since mattresses have some give to them, you can squeeze them into a crib, even if they’re slightly larger than the interior of the crib. There’s also such a thing as a mini crib if you plan on buying a mini crib, these mattresses must measure 24 by 38 inches. Make sure you don’t get mini crib mattresses and standard crib mattresses confused, as they’re far from interchangeable.

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