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Bed & Mattress Size Shop Guide

Bed & Mattress Size Comparison Guide: which size mattress should you buy?

Are you choosing the right mattress, the gateway to dreamland? Let me walk you through a deeper understanding of the world of mattresses and find that perfect size for you.

About Suilong Mattress

As a company founded in 1996 and specializing in mattresses, Suilong has always made it our mission to create high quality mattress products.

We understand that mattress size is crucial to a good sleeping experience, which is why we produce a wide range of mattress sizes to suit different individual needs.

From single mattress sizes to king size mattress sizes, we have it all.Suilong's mattresses not only offer a diverse selection of sizes, they are also of the highest quality, with ISO9001 and SGS quality management system certifications.

By choosing Suilong, we promise to help you find the most suitable mattress size and enjoy the best quality sleep experience.

Common Mattress Sizes

Size Dimensions (inches) Dimensions (cm)
Twin 38" x 75" 96.5 cm x 190.5 cm Buy Now
Full 54" x 75" 137 cm x 190.5 cm Buy Now
Queen 60" x 80" 152.5 cm x 203 cm Buy Now
King 76" x 80" 193 cm x 203 cm Buy Now


1. King mattress size: 76 inches X 80 inches.


king size


This mattress size is perfect for couples who need a lot of personal space or singles who like a spacious feel. The king size provides two people with 38 inches of width each, which is almost the width of a twin bed and is perfect for sleepers who need a lot of room to turn around.

2. California king mattress size: 72 in. x 84 in.


California king


This mattress size is perfect for taller people and is 4 inches longer than a standard king size bed, providing more room for you to stretch out if you have long legs. While its width is slightly narrower than a standard king size bed, this won't make much of a difference for most people.

3. Queen mattress size: 60 in. x 80 in.


queen size


This mattress is a great choice for couples, providing plenty of room without taking up too much bedroom space. If you have a slightly smaller room or you want to leave more room to move around, then a queen size mattress would be a great choice.

4. Full size mattress size: 54 inches X 75 inches.


full size


This mattress size is suitable for a single person, it is 16 inches wider than a twin bed and offers more room for sleepers who turn over more.

5. King twin mattress size: 38 inches X 80 inches.


King twin


This mattress is as wide as a twin, but longer than it, making it especially suitable for taller singles and giving your feet more room to stretch out.

6. Twin mattress size: 38 inches X 75 inches.


twin size


This mattress is the most common single bed size and is an excellent choice for kids, teens or visitors.


Size Guide:

Mattress Size

Dimensions (inches)

Dimensions (cm)

Best For



76 x 80

193 x 203

Couples who need a lot of personal space

Offers as much space per person as a Twin

California King

72 x 84

183 x 213

Taller people

4 inches longer than standard King


60 x 80

152 x 203


Ample space, does not require large room


54 x 75

137 x 191

Single sleepers

16 inches wider than a Twin

Twin XL

38 x 80

96 x 203

Taller single sleepers

As wide as a Twin, but longer


38 x 75

96 x 191

Children, teenagers, or guest rooms

Most common for single sleepers


Things to consider before choosing a mattress

There are many factors to consider when choosing a mattress. I will explain the following aspects in detail in order to help you find the best mattress for you.

1. Who will be using the mattress?

couple bed

This is probably the most important thing to consider when choosing a mattress. Is the mattress being chosen for a child, or for a couple? Or is the mattress for an elderly person who needs extra support? For a child, a smaller mattress, such as a single bed, may be needed, while for a couple, a queen or king size mattress may need to be considered. And for an elderly person or someone with health issues, a mattress that provides extra support and comfort may be needed.


2. What is the size of the room?

bed room

The size and layout of the room is also an important factor in determining the size of the mattress. If the room is small, you may need to choose a twin or queen size bed. If the room is larger, then consider choosing a king size mattress. Remember that the mattress should leave enough room for other furniture and there should be enough room to move around.


3. Weight and height

soft mattress

Different weights and heights may require different mattress sizes and firmnesses. For example, for lighter weight people, they may need a softer mattress, while for heavier weight people, they may need a firmer mattress. Also, for taller people, they may need a longer mattress to ensure their feet don't dangle.


4. What is your sleeping position like?

sleep position

Your sleeping position can also affect your mattress needs. For example, side sleepers may need a softer mattress to take pressure off their shoulders and hips. Whereas back and stomach sleepers may need a firmer mattress to keep the spine aligned.


5. What's your budget?


Last but not least is the budget. When considering your budget, it's important to remember that a high-quality mattress is likely to last longer than a cheaper one. Therefore, while the initial investment may be higher, choosing a high-quality mattress may be more cost-effective in the long run.

To summarize all of the above factors, I would recommend that you carefully consider your specific needs before deciding which mattress to purchase.

If you're not sure, Suilong also offers a 101-night trial period that gives you the opportunity to determine if this mattress is right for you after you've made your purchase.

Take advantage of this opportunity and find that mattress that's perfect for you!



Q: How do you pick the right size mattress?

A: Picking the right mattress size involves factors such as the size of your room, your body size, the number of people sleeping on the mattress, and your personal sleeping habits. Your budget and lifestyle are also significant considerations.


Q: What is the most purchased mattress size?

A: The Queen size mattress is the most commonly purchased due to its ample space for individuals or couples and compatibility with most room sizes.


Q: Is an 8 inch mattress more comfortable than a 6 inch one?

A: The comfort level depends on personal needs and preferences. An 8-inch mattress tends to offer more support and comfort, but a 6-inch mattress may be suitable for lighter individuals or occasional use in a guest room.


Q: Do couples prefer Queen or King size beds?

A: While individual preferences vary, Queen or King size beds are preferred by most couples due to the greater space per person they offer.


Q: Is a Queen size bed too big for a single person?

A: No, a Queen size bed provides plenty of space for a single sleeper and can be more comfortable for people who move frequently during sleep.


Q: Which is the most popular bed size?

A: The Queen size bed is the most popular due to its versatility, providing adequate space for both single sleepers and couples.


Q: Is a Queen size bed too small for a couple?

A: Not necessarily. While some couples prefer the extra space of a King size bed, many find a Queen size bed comfortably spacious for two people.


Q: What age is a Queen size bed suitable for?

A: A Queen size bed is suitable for any age, provided the individual needs more space than a twin or full-size bed. It's frequently chosen for adults or older teenagers.


Q: What size bed should a couple choose?

A: This depends on personal preferences, sleeping habits, and the size of the bedroom. However, a Queen or King size bed is typically the best option for couples for a comfortable sleeping experience.


Q: What are the dimensions of common mattress sizes in inches and cm?

A: Here are some common sizes - Twin: 38" x 75" (96.5 cm x 190.5 cm), Full: 54" x 75" (137 cm x 190.5 cm), Queen: 60" x 80" (152.5 cm x 203 cm), King: 76" x 80" (193 cm x 203 cm).

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