Home>Blog>A Guide to Bed Sizes and Mattress Dimensions

A Guide to Bed Sizes and Mattress Dimensions

Castlery|Mar 20, 2024

Selecting the right bed is a crucial decision when it comes to creating the perfect atmosphere in your bedroom. Your bed should not only offer comfort but also complement your lifestyle and space. In this comprehensive guide, we will explore bed sizes, mattress dimensions, and everything you need to know to make an informed choice.

Bed sizes and dimensions

Let's begin by examining the various bed sizes available in the market:

Queen size bed

A queen-size bed is one of the most popular choices for couples, measuring 152cm in width and 203cm in length. It offers ample space for two people and is a versatile option for most bedrooms. Queen beds strike a balance between space-saving and comfort, making them a go-to choice for many households.

Pictured: Quentin Bed in Queen Size. Image credits: @styledbypt

King size bed

A king-size bed is the epitome of luxury, providing a generous 193cm in width and 203cm in length. It's perfect for couples who want plenty of space to spread out and sleep comfortably. If you have room to spare and want to go all out in the comfort department, this generously-sized frame is perfect for you.

Twin size bed

A twin bed, also known as a single bed, is the smallest standard bed size available. It measures 96cm in width and 190cm in length, making it a great choice for a child's room or a room with limited space.

Twin beds allow you to maximise floor space while providing adequate space for sleeping - however, it does not provide enough space for couples or those who prefer more room to stretch out.

Full size bed

A full-size bed, sometimes referred to as a double bed, measures 137cm in width and 190cm in length. It provides more space compared to a twin bed and is a good option for solo sleepers who enjoy some extra room. Full-size beds are versatile and suitable for teenagers, young adults, or guest rooms.

To help you visualise the differences between bed sizes, here's a comparison chart:

Bed SizeWidth (cm)Length (cm)Suitable For
Super single91190Children, Guest Rooms
Single107190 Solo Sleepers, Teenagers
Queen152191 Couples, Versatile Bedrooms
King182191Couples, Spacious Bedrooms

Measuring tips

Measuring your mattress and bed frame and ensuring there's enough space in your bedroom is essential to create a comfortable and visually pleasing sleep environment.

The Seb Bed in Queen Size. Picture credits: @styledbypt

If you’re planning to share a bed and don’t want your partner too close for sleeping comfortably, try this out:

  • Get your partner to lie beside you on the mattress.

  • Rest your head on your hands and keep your elbows facing outwards

You’ll know that you’ll have enough room if your elbows don’t touch!

The Billie bed's curved wingback bed frame and footboard exude an elegant and compact impression.

Another essential factor? Having space around the perimeter of your bed. The last thing we want is for our bed frame to be so big it obstructs our movement or prevents us from opening cupboards fully due to space constraints. You should have 76cm to 88cm of clearance space around the bed.

What to look for in your bed frame

When buying a bed, several important factors should be considered to ensure you select the right one that suits your needs and preferences. Here are some key factors to keep in mind:


Determine the bed size that best fits your requirements. Consider whether you're sleeping alone or with a partner, and the available space in your bedroom. Common bed sizes include twin, full, queen, and king. Choose a size that offers enough space for comfortable sleep.

Mattress type

There are various mattress types to choose from, including innerspring, memory foam, latex, hybrid, and more. Each type has unique features and benefits. Consider factors such as firmness, support, and your personal preferences for materials and feel.

The Dawson Bed features a low profile and minimalist look. Picture credits: @catalinatrez


Mattresses come in different levels of firmness, ranging from soft to firm. Your preferred firmness level depends on your sleep position (side, back, stomach), body weight, and personal comfort preferences. Test the mattress in-store if possible to determine the right firmness for you.

Easy maintenance

For fuss-free cleaning, you can't go wrong with the classic and charming wooden bed frames.

For those who want the best of both worlds, the wooden-framed Seb Bed combines comfort with convenience with its modern inset fabric headboard and elevated base which makes it easy to clean underneath your bed. Plus, the headboard can be easily cared for by wiping it down!

The Seb Bed is made from solid acacia wood that is easy to maintain. Also pictured: The Seb Bedside Tables.


Adequate support is crucial for maintaining proper spinal alignment and reducing pressure points. Look for a mattress that offers good support, especially if you suffer from back pain or other physical discomforts.

We hope this comprehensive guide has provided valuable insights into bed sizes and mattress dimensions. Choosing the perfect bed size is an essential part of creating a comfortable and stylish bedroom. By considering your lifestyle, room size, and personal preferences, you can make an informed decision that ensures a good night's sleep for years to come. Whether you opt for a cosy twin bed or a luxurious king-size bed, your choice should reflect your unique needs and style.

    What's Popular
  • Queen Size Bed
  • King Size Bed
  • L Shaped Couch
  • Extendable Dining Tables
  • Marble Dining Table
  • Velvet Sofa
    About Us
  • Our Story
  • Contact Us
  • Our Designers
  • Trade Program
  • Affiliate Program
  • Careers
  • Graduate programme
  • Blog
  • Press
    Shopping With Us
  • New Homeowners Special
  • Interior Styling Service
  • My Rewards​
  • Refer a Friend
  • Free Swatches
  • Delivery
  • Product Warranty
  • Sales and Refunds
  • Help Center
  • Try Web AR

© 2024 Castlery. All rights reserved.
  • Privacy
  • Terms
  • Promo Terms*
  • The Castlery Club Terms
  • Sitemap