UK Mattress Size Explained: Choose the Perfect Fit

Mattress Size

In the quest for a restful night's sleep, selecting the right mattress size is paramount. Navigating through the myriad of mattress sizes available in the UK can be daunting, but fear not! Our comprehensive guide to UK mattress size is here to help you decipher the dimensions and find the perfect fit for your sleeping needs. Whether you're upgrading your bed, furnishing a new home, or simply curious about the options, understanding the nuances of UK mattress sizes will ensure you make an informed decision. Join us as we explore everything from cosy singles to luxurious super kings, ensuring your journey to dreamland is as seamless as possible.

1. Why choosing the right mattress size is important

Choosing the right mattress size is not just about comfort, it's the cornerstone of a healthy night's sleep. A properly sized mattress supports your body, reduces turning and improves the quality of your sleep. Different mattress sizes are available to suit different needs and space sizes, from small single mattresses to spacious super king size mattresses, each with its own unique benefits. Choosing a mattress that is too small may feel cramped and interfere with your sleep, while choosing a mattress that is too large may result in improper use of space in the room.

Understanding your needs, considering your room space and choosing the most appropriate mattress size is key to ensuring a comfortable night's sleep every night.

Next, let's dive into our UK mattress size breakdown and make an informed decision about your quality sleep choices.

Mattress Size

2. Mattress sizes in the UK

In the UK, mattresses come in a variety of sizes to suit all sleeping needs and room sizes. Here are the most common mattress sizes and their features:

Single Mattress

Measuring approximately 90cm x 190cm (3'0" x 6'3"), this is a standard size designed for a single adult and is ideal for bachelor pads or children's bedrooms.

Small Double Mattress

Measuring approximately 120cm x 190cm (4'0" x 6'3"), this is wider than a standard single bed and offers an ideal option for single sleepers who need more space or couples with limited space.

Double Mattress

Measuring approximately 135cm x 190cm (4'6" x 6'3"), this is the most popular mattress size in the UK and offers comfort for couples.

King Size Mattresses

Measuring approximately 150cm x 200cm (5'0" x 6'6"), this is wider and longer than a double mattress and offers a luxurious option for sleepers seeking ultimate comfort and space.

Super King Size Mattress

Measuring approximately 180cm x 200cm (6'0" x 6'6"), this is the largest standard mattress size on the market and offers unrivalled comfort and spaciousness for families requiring maximum sleeping space.

Small Single 2’6″ x 6’3″ (75 x 190cm)
Single 3’ x 6’3″ (90 x 190cm)
Small Double 4’ x 6’3″ (120 x 190cm)
Double 4’6″ x 6’3″ (135 x 190cm)
King Size 5′ x 6’6″ (150 x 200cm)
Super King 6’ x 6’6″ (180 x 200cm)


When choosing a mattress, it's vital to consider the size of the mattress in relation to the size of the room, to ensure that your choice meets your sleeping needs while fitting harmoniously into your bedroom space.

Next, we'll explore how to choose a mattress based on room size to ensure that your choice not only fits comfortably, but also meets your expectations in terms of aesthetics and functionality.

Read on to discover how to perfectly integrate a mattress into your sleeping space, creating a bedroom environment that is both functional and aesthetically pleasing.

3. How to choose a mattress based on room size

Choosing the right mattress size should take into account not only your individual sleeping needs, but also the size and layout of the room. Here are some practical tips to help you choose the right mattress for your room size:

  • Measure your room: Before you consider purchasing a new mattress, start by accurately measuring the length and width of your bedroom. This step will help you get an idea of the space available and ensure that your new mattress doesn't overcrowd the room.
  • Consider the space around you: The ideal mattress arrangement should allow you to move freely around the bed, including enough room to open doors and wardrobes. Leave at least 60cm (2ft) of space to allow for movement around the bed.
  • Mattress size and room function: If your bedroom is also your workspace or lounge area, it may be more appropriate to choose a smaller mattress, such as a small double mattress or a double mattress, to allow space for other furniture.
  • Future needs: Buying a mattress is a long-term investment. Consider whether your lifestyle will change over the next few years, such as moving house, adding or removing family members, etc., to ensure that your choice will accommodate future needs.

With these suggestions, you can ensure that the mattress you choose will not only be the right size, but will fit perfectly into your bedroom space and lifestyle.

Next, let's discuss how you can consider the needs of your users to ensure that the mattress you purchase meets the comfort requirements of all sleepers.

uk mattress sizes

4. Consider the user's needs

When choosing a mattress, it is vital to consider the needs of the user. This includes not only the preferred sleep position, but also any health issues that may affect the quality of sleep. Here are some key factors that can help you make a choice that is better for you and your family:

  • Sleep position: different sleep positions may require different types of support. For example, side sleepers may need a mattress that provides extra hip and shoulder support, while back sleepers need a mattress that supports the natural curve of the spine.
  • Body Pain: If you often wake up with back pain or other discomfort, you may want to consider a more supportive or softer mattress. Speak with a professional to find the type of mattress that will relieve your symptoms.
  • Temperature preference: Some people are more prone to feeling hot while sleeping, and if this is the case for you, you may want to consider a more breathable mattress, such as those equipped with cooling technology.
  • Co-sleeping: If you share your bed with a partner, you'll need to consider the preferences and needs of both partners. King size mattresses or super king size mattresses offer more space and can minimise disruption to your partner when they turn over.

By taking all of these factors into consideration, you can choose the perfect mattress for you and your family, ensuring that everyone enjoys a comfortable and nourishing night's sleep.

Now that you understand how to choose a mattress based on the needs of the user, the next step is to consider your budget and future needs to ensure that your choice is both affordable and long-lasting.

5. Budget and Future Needs

Budget is obviously a consideration that should not be overlooked when choosing a mattress, but it is also important to consider your long-term needs. Here are some tips to help you choose the best mattress for your budget:

  • Determine your budget range: before you start looking for a mattress, determine the price range you are willing to pay for a new mattress. Remember, a mattress is a long-term investment, and allocating your budget wisely can help you get a better quality and lasting sleep.
  • Consider long-term value: choosing a good quality, highly rated mattress will often result in a longer lifespan and a better sleep experience. Investing in a slightly more expensive but higher quality mattress may be more economical in the long run.
  • Future life changes: Consider life changes you may face in the future, such as moving, adding or subtracting family members. An adaptable mattress, such as one with adjustable firmness, may be better able to accommodate these changes.
  • Look for deals and promotions: Mattress sellers often have promotions, especially during important holiday seasons. Keeping an eye out for these opportunities can help you get a quality mattress on a budget.

With these tips, you can choose a mattress that will meet you and your family's needs over the long term while ensuring that you stay within your budget.

uk mattress sizes

6. Recommended Purchase: Suilong 20cm Hybrid Mattress - 5FT UK KING (150 X 200CM)

Price: £259.00

Suilong Mattress brings you this 20cm Hybrid Mattress which not only offers excellent edge support and medium tension support for people in all sleeping positions, whether you sleep on your side, back or stomach, you will be fully supported and wake up in the morning without pain or discomfort.The 3 zone pocket spring system provides you with tailored comfort support every night.

Product Features

  • Edge support: The Suilong mattress has excellent edge-to-edge support, with medium tension providing very good support for almost anyone.The 3-zone pocket spring system ensures support with a customised comfort experience.
  • Soft & anti-allergy knit cover: Made of super soft and breathable fabric interwoven with cotton threads to protect the mattress from dust and other allergens. Meets CertiPUR-US's strict standards for materials, emissions, durability and performance.
  • Motion isolation: If you move around a lot at night and don't want to disturb your partner, the Suilong Hybrid Mattress is ideal for you. The combined efforts of hundreds of individual spring coils and high-density foam layers provide a medium-firm feel, along with a 101-day at-home trial.
  • Wave memory foam mattress: The wave-shaped foam layer adapts to your unique body shape and curves. Our ergonomic springs dynamically adapt as your sleep position changes during the night, and a reinforced core area is designed to keep your spine aligned.
  • Suilong Expertly Designed: You don't have to spend a fortune to get a good night's sleep, as evidenced by the Suilong mattress, which provides a cool, comfortable night's sleep at an affordable cost. The mattress is delivered to you compressed, rolled and vacuum encapsulated.

Buying Advantage

Buying a Suilong 20cm Hybrid Mattress will not only provide you with a quality sleep experience, but you will also be able to take advantage of current purchase offers. If you are interested in our products, please feel free to contact us and our professional team will provide you with more information and support.

Suilong Mattress is committed to bringing you a selection of high quality, comfortable and affordable mattresses that will immerse you in unrivalled comfort every night. Choose Suilong today and start a new chapter in your journey to a better night's sleep.


Suilong 20cm Hybrid Mattress

Suilong 20cm Hybrid Mattress

soft & hypoallergenic knitted cover

motion isolation

Buy Now


Now that you're equipped with all you need to know about choosing a UK mattress, from size analysis to budget considerations, we hope this information will help you make the best choice for you. Remember, a good night's sleep starts with choosing the right mattress.

We'd love to hear your thoughts and experiences. If you have any questions or would like to share your mattress selection experience, please leave a comment below. We'd love to talk with you and discover more about the secrets of a good night's sleep together.

Right now, start your mattress selection journey for a great night's sleep for you and your family!


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FAQs about UK Bed Sizes

Q1: What are the standard bed sizes available in the UK?
A1: In the UK, standard bed sizes include Single (90 x 190 cm), Small Double (120 x 190 cm), Double (135 x 190 cm), King (150 x 200 cm), and Super King (180 x 200 cm).

Q2: What is the best bed size for a couple in the UK?
A2: The best bed size for a couple in the UK is typically considered to be a King size (150 x 200 cm) as it provides ample space for two adults to sleep comfortably without disturbing each other.

Q3: Can you explain the difference between a Double and a King size bed?
A3: Yes, a Double bed measures 135 x 190 cm, providing a suitable space for two people. A King size bed is larger, measuring 150 x 200 cm, offering extra width and length for additional comfort.

Q4: Is a Super King size bed much larger than a King size bed?
A4: Yes, a Super King size bed measures 180 x 200 cm, providing significantly more space in both width and length compared to a King size bed (150 x 200 cm), making it ideal for those who value spacious sleeping arrangements.

Q5: What size bed would you recommend for a small bedroom?
A5: For a small bedroom, a Single (90 x 190 cm) or Small Double (120 x 190 cm) bed would be recommended to maximise space while still providing a comfortable sleeping area.

Q6: Are children's bed sizes different in the UK?
A6: Yes, children's beds in the UK often come in Cot (70 x 140 cm) and Toddler sizes (70 x 160 cm), though older children might transition to a Single (90 x 190 cm) bed.

Q7: What is the most popular bed size for guest rooms in the UK?
A7: A Double bed (135 x 190 cm) is the most popular size for guest rooms as it provides enough space for two guests without occupying too much room space.

Q8: How do I choose the right bed size if I have limited space but need comfort for two people?
A8: If space is limited but you need to accommodate two people comfortably, consider a Small Double (120 x 190 cm) bed. It offers more room than a Single bed while taking up less space than a standard Double bed.

Q9: What should I consider when upgrading from a Double to a King size bed?
A9: When upgrading to a King size bed (150 x 200 cm), consider the size of your bedroom to ensure the larger bed will fit comfortably, along with the need for new bedding to fit the larger dimensions.

Q10: Are UK bed sizes compatible with European bed sizes?
A10: UK bed sizes are slightly different from European sizes, with UK sizes typically being a bit smaller. For example, a UK King size is 150 x 200 cm, whereas a European King size is often 160 x 200 cm. It's important to check size compatibility when buying beds or bedding from abroad.

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