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Mattress Size Guide

By Direct Bed Team July 01, 2016 0 comments

Mattress size chart (inches)

Standard Mattress Sizes Specialty Mattress Sizes
King Bed Size 76″ x 80″ Twin Extra Long (XL) 38″ x 80″
Queen Bed Size 60″ x 80″ Super Single (3/4) 48″ x 74″
Full Size Bed 54″ x 74″ Double Extra Long (XL) 54″ x 80″
Twin Size Bed 38″ x 74″ Queen RV (Short) 60″ x 74″
Crib Size Bed 28″ x 52″ King RV (Short) 76″ x 74″

** All Mattress sizes will vary by up to 1.5" to allow room for bedding such as sheets and duvets. 

Mattress size chart (centimeters)

Standard Mattress Sizes Specialty Mattress Sizes
King Bed Size 193cm x 203cm Twin Extra Long (XL) 97cm x 203cm
Queen Bed Size 152cm x 203cm Super Single (3/4) 122cm x 188cm
Full Size Bed 137cm x 188cm Double Extra Long (XL) 137cm x 203cm
Twin Size Bed 97cm x 188cm Queen RV (Short) 152cm x 188cm
Crib Size Bed 71cm x 132cm King RV (Short) 193cm x 188cm

** All Mattress sizes will vary by up to 4cm to allow room for bedding such as sheets and duvets. 

Crib Mattress Size

When it comes to the size of a crib mattress, the most important factor is that it fits snuggly in the crib. You do not want a gap between the mattress and the side of the crib as a gap can endanger your child. Standard crib mattresses are 28-inches in width and 52-inches in length. A crib mattress should not be more than 6-inches thick.

Twin size mattress

Twin (or single) mattresses are most often used by children and college kids in dormitories. They were once a popular option for mature adults who slept alone in their own apartments or homes – or boarding houses, where space was tight. A regular twin mattress offers a comfortable length for most men and women but a Twin XL mattress delivers an extra six inches in length.

Double size mattress

During the 60’s and 70’s, the double – or full-sized – mattress ruled marital bedrooms, even though it was only 15” wider than a twin size bed. But our homes were smaller and we were shorter. Today, double size mattresses are a popular choice for spare rooms and sometimes a child’s room. If you and your partner are less than 5’5” tall and have a smaller room, a double mattress may be a good choice for you. Sheets are also less expensive than with larger or specialty mattresses.

Queen size mattress

Queen size mattresses gained popularity in the 80’s and are now the most popular size mattress for people who share a bed with a partner. Here’s why – the 6” addition in width and length from a double mattress make for a more comfortable and less-disturbed sleeping environment. For many couples, a queen size bed is the ideal choice as it fits well into most bedrooms and is larger enough to give both people the space they need to sleep undisturbed.

King size mattress – Standard King & California King

King size mattresses have come into vogue in the last decade, offering couples as much space in bed with their partner as if they were alone in a twin. In fact, if you push two twin size mattresses together, you’ll have a king size bed – in width at least. King size mattresses come in two popular lengths, offering taller people more legroom. The California King mattress is the longest mattress available.

Mattress Thickness

You might have noticed that we didn’t mention much about the thickness of the mattress. Well, it is because there are no standards when it comes to thickness and the options vary quite a bit. When choosing the thickness of your mattress, there are a variety of things to consider.

Overall Height of the Mattress

The top of your mattress will be a combination of the height of the bed or platform plus the height of the mattress. If you will use a box spring, you have to also add the height of the box spring.

Minimum Thickness of the Mattress

Generally, the more you weigh, the thicker the mattress you’ll need not to bottom out. The minimum depth of a comfortable mattress is 5"  if it is a foam mattress and 8" if it is a spring mattress. Innerspring and hybrid mattresses are generally thicker than latex or foam mattresses. 

Mattress Height for Pregnant Moms

Some beds are so tall you need steps to get into them. While this may look romantic, if you’re planning to have a baby, consider the difficulty of safely navigating the steps holding an infant who wants to nurse in the middle of the night when you’re exhausted.

Mattress Height for Mobility Issues

Too much height can also be difficult for someone who has mobility issues.

However, a mattress that is too low to the ground can present other issues that make it difficult for someone with mobility issues to stand up from the bed. If mobility issues are a concern, you’ll want a total height close to that of most chairs which is about 20 – 22-inches above the floor.

How Big is your House or Bedroom? 

Whatever mattress size you are going to choose, it is important that it fits in your bedroom or in your house. If your mattress is too big for your bedroom, you may not have room for other furniture in your bedroom. Yes, the mattress is the most important feature of a bedroom, but you should still have a safe amount of room to walk around your bed. Make sure you can still reach the windows and doors safely in your room. 

If your mattress is too big for your house, you may not be able to get it in or out of your house. This happens most commonly when trying to fit a queen or king size mattress into the upstairs or downstairs of a home. Double check the dimensions of your stairways that you will be able to fit a queen or king mattress. Most of the mattresses and bases come in a compact box so you won't have a problem getting your mattress or base in and out. 

What size bed can I fit in my room? 

Here are some rough guidelines of how big your room should be in order to fit different size mattresses. 

  • A crib bed would require a room size of 9ft*9ft.
  • A Twin bed would suit perfectly into a room that is 9ft*9ft. 
  • A twin XL bed would require a room of at least 10ft*10ft. 
  • Full, full XL, Olympic and queen size beds would need at least 11ft*11ft size.
  • The king and California king beds would need a room size of 12ft*12ft at least.

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