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What Size is a King Size Mattress?

When you think of sheer luxury and comfort in the world of mattresses, the word king mattress size might pop into your mind. Many wonder about the specifics of a king size mattress. Its dimensions, its popularity and why it might be the perfect choice for them. Let’s dive into the world of the king mattress and discover its realm.

The dimensions of the king size mattress

In the UK, a standard king mattress size measures 150 cm in width and 200 cm in length. That’s 5 feet wide and roughly 6.6 feet long. However, it’s worth noting that sizes might slightly differ depending on the manufacturer and the country.
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Why should you invest in a king sized mattress?

Expansive Dimensions

  • Our king size mattresses guarantee expansive space, ensuring that couples can sleep comfortably without encroaching on each other’s space. It’s also a boon for those sharing the bed with kids or furry friends.

Unparalleled Comfort

  • Say goodbye to sleep disturbances with our king mattress. Whether you’re someone who moves a lot during sleep, or you simply like to sprawl, our mattresses cater to every need.

Aesthetic Upgrade

  • A king sized mattress can dramatically uplift your bedroom’s visual appeal. Larger mattresses often serve as a room’s centrepiece, setting the tone for the entire space.


  • King size mattresses are versatile. Whether you’re watching a movie, reading a book, or just lounging, they provide ample space for relaxation beyond just sleep.


  • Oftentimes, king mattresses come with enhanced durability and support features, ensuring they stand the test of time and provide consistent comfort.

Health Benefits

  • A more spacious sleeping area can contribute to better posture and reduce the chances of waking up with aches and pains. Investing in our luxury king size mattresses can be a step towards healthier sleep habits.

The rising popularity of king mattresses

Over the years, the demand for king size mattresses has seen a significant rise. The reasons are manifold:

Increasing home sizes

Value for money

  • With durability and the luxury of space it offers, many see it as a valuable investment for a good night’s sleep.

Health and posture benefits

  • A spacious bed can often aid in better sleeping postures, leading to fewer back and joint aches.

Different types of king size mattresses

It’s not just about size. When you’re in the market for a king size mattress, you’ll encounter various types:


Known for its natural elasticity and ventilation, offering a breathable sleep experience.

Pillow Top

Features an added layer of soft material on the top, providing an extra cushiony feel.

Pocket Sprung

Uses individual springs housed in their own pockets to offer tailored support.


Made with all natural materials, ensuring a healthier sleep environment.


Wool offers natural temperature regulation and moisture-wicking properties.


Made from coconut coir fibre, it’s firm and provides good spine support.


Manufactured without harmful chemicals or synthetic materials, promoting an eco-friendly sleep.

Caring for your king mattress

A mattress is an investment, and like any investment, it requires care:

Rotate regularly

Use a mattress protector

  • This shields your king size mattress from spills, dust mites, and other potential hazards.

Clean spills immediately

  • If there’s a mishap, address it promptly to prevent permanent staining or damage.

In conclusion: Is a king size mattress right for you?

A king size mattress offers unparalleled luxury, space, and comfort. Whether you’re a solo sleeper who enjoys vast expanses or a couple looking for undisturbed sleep, the king is a worthy contender. Assess your room space, budget, and sleeping habits, and the king might just be the crowning jewel of your bedroom.

Need more details? We’re here to help! Call us now on 0161 250 9200 or drop us an email at [email protected] for personalised assistance.

Reference: National Bed Federation, UK.

Published: 4th September 2023 (Updated: 4th September 2023) | Isaah

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