Mattress Sizes and Dimensions

Our mattress size guide outlines the different sizes of beds and their dimensions to help you find the bed size that will serve your bedroom needs best.

Which Mattress Size Should You Buy?

Sizes: 76” x 80” inch - 6.33 x 6.67 Feet - 193.04 x 203.2 CM
cal king
Sizes: 72” x 84” inch - 6 x 7 Feet - 182.88 x 213.36 CM
Sizes: 60” x 80” inch - 5 x 6.67 Feet - 152.4 x 203.2 CM
Sizes: 54” x 75” inch - 4.5 x 6.25 Feet - 137.16 x 190.5 CM
Sizes: 38” x 80” inch - 3.16 x 6.67 Feet - 99.06 x 203.2 CM
Sizes: 38” x 75” inch - 3.16 x 6.25 Feet - 99.06 x 190.5 CM
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Mattress Size and Dimensions Chart

Understanding which mattress size is best for you

Mattress Size Dimensions in Inches Dimensions in Feet Dimensions in CM
King 76” x 80” 6.33 x 6.67 193.04 x 203.2
California King 72” x 84” 6 x 7 182.88 x 213.36
Queen 60” x 80” 5 x 6.67 152.4 x 203.2
Full 54” x 75” 4.5 x 6.25 137.16 x 190.5
Twin XL 38” x 80” 3.25 x 6.67 99.06 x 203.2
Twin 38” x 75” 3.25 x 6.67 99.06 x 190.5

Get a Free Mattress Size Chart

  • king

    King Mattress Size

    Dimensions: 76” x 80”
    A King size mattress is 76 inches wide and 80 inches long (193.04 cm x 203.2 cm). It's best suited for couples or combination sleepers. Before buying the King size, compare it with other mattresses made for large families: King vs Queen, King vs Cal King, King vs Split King.

    Best For

    Couples who love to sleep with their families, combination sleepers or taller individuals.

    Room Size

    A spacious bedroom measuring 13 feet by 13 feet is ideal for a King bed to fit in.
    Shop King Mattress
  • cal king

    California King Mattress Size

    Dimensions: 72” x 84”
    A California King size mattress is 72 inches wide and 84 inches long (183 cm x 213.5 cm). It's perfect for pet parents and an ideal choice for tall people. Before buying the Cal King size, compare it with other mattresses made for taller individuals: Texas King vs Cal King, Cal King vs Queen, Cal King Vs Alaskan King.

    Best For

    Taller people who enjoy having ample leg space or couples who love to snuggle their pets.

    Room Size

    A narrow bedroom measuring 10 feet by 12 feet is ideal for a Cal King bed to fit in.
    Shop Cal King Mattress
  • queen

    Queen Size Mattress

    Dimensions: 60” x 80”
    A Queen size mattress measures 60 inches wide and 80 inches long (167 cm x 203.5 cm). It is the most popular choice of mattress size among couples. The queen size mattress is spacious despite being compact, and is an excellent choice for couples, single adults or adults with pets. Compare Queen mattress with other mattress sizes: Queen vs King, Queen vs Cal King, Queen vs Full.

    Best For

    Couples who love cuddling, a young child with a parent, or a single person with a dog.

    Room Size

    The recommended room size for a Queen size mattress varies from 10 feet by 10 feet up to 10 feet by 14 feet.
    Shop Queen Mattress
  • full

    Full Size Mattress

    Dimensions: 54” x 75”
    A Full size mattress is 54 inches wide and 75 inches long (134.5 cm x 203.5 cm). This ideal bed size for individuals is also known as a double bed. It is a preferred choice for shorter people. Compare Full size with other mattress sizes: Full vs Queen, Full vs Twin XL, Full vs King.

    Best For

    Single parent with a child, young adults, teenagers or singles with pets.

    Room Size

    To have space in your room after fitting in a Full size mattress, a room should measure 9 feet by 9.6 feet. These mattresses are an excellent choice for guest rooms, dorm rooms and studio apartments.
    Shop Full Mattress
  • twin

    Twin XL Mattress Size

    Dimensions: 38” x 80”
    A Twin XL mattress is 38 inches wide and 80 inches long (96.5 cm x 203.5 cm). It is an ideal mattress size for people who love compact sleeping spaces and growing adults. If you are considering it for young adults, you can compare it to other mattress sizes: Full vs Twin XL, Twin XL vs Queen, Twin XL vs Split King.

    Best For

    Young adults, children up to 12 years of age, guest bedrooms, dorm rooms.

    Room Size

    A Twin XL bed size can fit inside a children’s room or a dorm room. Hence, the bedroom size should be 8 feet by 10 feet.
    Shop Twin XL Mattress
  • twin

    Twin Mattress Size

    Dimensions: 38” x 75”
    Twin size mattresses are 38 inches wide and 75 inches long (96.5 x 188 cm). This mattress size is best for children and can be used on bunk beds. Plus, you can use safety rails on the side of the Twin bed so they won’t roll off the bed. Compare Twin size to other mattress sizes: Twin vs Twin XL, Twin vs Full.

    Best For

    Children 2-12 years old, or bunk beds.

    Room Size

    The recommended room size for a twin size mattress is 7 feet by 10 feet. But at the same time, a room size needs to be 9 feet by 9 feet if you are willing to put two twins together in a room.
    Shop Twin Mattress

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Who is sleeping on the mattress?

If you are confused about the different sizes of beds or mattress sizes to choose from, follow these guidelines.

Teenagers & Single adults:

A Twin XL, Full or Queen mattress are recommended for teenagers or single adults as they tend to require legroom. So make sure to buy a mattress that has enough leg space for them to stretch out.
  • Queen
  • Full
  • Twin XL
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A Queen, King and Cal King mattresses are the most popular choice among couples, as all these mattresses let you have an intimate cuddle session as well as some personal sleeping space.
  • Queen
  • King
  • Cal King
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A Twin, Twin XL or a Full size mattress is preferred for children's bedrooms because they eventually outgrow them. Because, If you buy the smallest size mattress for them, you may have to buy a new bigger mattress again in the near future. Growing kids also need room to stretch out.
  • Twin
  • Twin XL
  • Full
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Adults with pets or Children:

A Queen, King, Cal King, or a Full size mattress is recommended for adults with pets or kids. Single adults may be comfortable in a Full, while couples are likely to prefer Queen, King, or Cal King.
  • King
  • Cal King
  • Queen
  • Full
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Things to consider before choosing a mattress

Mattress sizes vary depending on your needs, budget, and bed size. If you're still not sure which is the best fit for yourself, try our risk-free 365-night trial period to find out! Other important considerations include how many people will be using this mattress, bed position, size of the room, etc. Have a look at these factors to understand more about mattress sizes.
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Other Mattress Sizes

  • crib

    Crib Mattress Size

    Dimensions: 28” X 50” | 2.3 X 4.6 Feet
    Crib size mattresses are 28 inches wide and 50 inches long (70 X 127 cms). A crib size mattress is the smallest mattress size available on the market and is primarily designed for toddlers and small children. Because of its small dimensions, it can easily fit into a children’s room. It can also be placed in the same room as yours if the bedroom is large.
  • small single

    Small Single Mattress Size

    Dimensions: 30” X 75” | 2.6 X 6.2 Feet
    A small single bed is a long narrow bed 30 inches wide and 75 inches long (75 X 190 cms). It is a good fit for children’s narrow beds with extra length for tall teens. They can also be used for the spare room in your house and can be used to aesthetically enhance your lounging space in the house.
  • olympic queen

    Olympic Queen Mattress Size

    Dimensions: 66” X 80” | 5.5 X 6.6 Feet
    An Olympic Queen size mattress is 66 inches wide and 80 inches long (168 X 201 cms). Because it is an uncommon size, it can be challenging to accessorize it or find a bed frame for it. This is an excellent choice for couples who want more space than a standard Queen size mattress. This size lies somewhere between a King and a Queen and is a good fit for the master bedroom of the house.
  • split king

    Split King Mattress Size

    Dimensions: 38” X 80” | 3.25 X 6.67 Feet
    A Split King mattress is two Twin XL mattresses (38 inches x 80 inches) put together, making it 76 inches wide and 80 inches long king size mattress. A Split King mattress is popularly used with adjustable beds, and each side of the bed can have an independent setting. It limits motion transfer to a large extent, helping light sleepers fall asleep easily.

Size of the Bedroom:

Imagine the joy of walking into your bedroom knowing that the King size mattress is awaiting you. But if as soon as you enter the room, it looks cramped and you stub your toe, it's no longer ideal. Hence, always have room dimensions in mind before buying your mattress. A wrong choice can make your room look too small or empty.

Body Weight and Height:

A medium firm mattress is usually recommended for most sleepers. Your unique height and weight will determine what mattress is best for you. If you wake up with aches or soreness, you could consult with a doctor to see what mattress might help.

Sleeping Position:

Your sleeping position and your mattress size go hand in hand. If you are a combination sleeper, then bigger mattresses are an ideal choice for you, if you like to snuggle, then compact mattress sizes are an excellent choice.


Always know your budget before purchasing a mattress. The kind of materials use and the size you choose will impact the price of the bed. A larger sized mattress from a luxury brand will likely be more expensive.
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