The bed and mattress size guide

Choosing the right size mattress for your bed

To guarantee a seamless fit for your brand-new mattress, it's essential to align the length and width with your bed frame or base. However, determining the ideal size hinges on various considerations, such as room dimensions and the number of occupants who'll be enjoying cozy nights. Rest assured, we're here to provide guidance. In the following sections, we'll walk you through the specific dimensions of each bed and mattress size available in the UK, making your selection process a breeze.

What size is a super king bed and mattress?

Super king beds and mattresses boast expansive dimensions, measuring 180cm in width and 200cm in length (equivalent to 6 feet in width and 6 feet 6 inches in length). This represents the most generous bed size within our range, catering to families who relish the idea of gathering for breakfast in bed or anyone who highly prioritises ample space. Our super king mattresses are thoughtfully crafted and come in a choice of memory foam and pocket spring options, ensuring a comfortable night's sleep tailored to your preferences.

Best for: two people or more and those who like extra room.

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What size is a king size bed and mattress?

When measured in metric units, a typical king size bed and mattress encompass dimensions of 150cm in width and 200cm in length (equivalent to 5 feet in width and 6 feet 6 inches in length). Notably, king size beds extend longer than double beds, rendering them an excellent choice for individuals of taller stature seeking that essential extra legroom, or for couples who aspire to elevate their sleeping space to a more spacious realm.

Best for: two people and those taller than 190cm/6ft 2ins

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What size is a double bed and mattress?

Double beds and mattresses are designed with dimensions of 135cm in width and 190cm in length (equivalent to 4 feet 6 inches in width and 6 feet 3 inches in length). As the prevalent choice among bed sizes, doubles offer an ideal solution for accommodating two individuals comfortably and are well-suited to most bedroom settings. For those interested in optimising bedroom space, consider the practicality of a double ottoman bed, which provides additional storage capabilities alongside its comfortable sleeping area.

Best for: two people and small to average sized bedrooms.

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What size is a small double bed and mattress?

A small double bed and mattress exhibit dimensions of 120cm in width and 190cm in length (equivalent to 4 feet in width and 6 feet 3 inches in length). Often referred to as a queen size bed, these are primarily tailored for single-person use, though they can also comfortably accommodate two adults when required. If your bedroom falls on the cosier side, small double beds prove to be an excellent choice, particularly when paired with a divan or ottoman base, which cleverly optimises storage space within the room.

Best for: one person or couples with small bedrooms

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What size is a single bed and mattress?

Single beds and mattresses measure 90cm wide and 190cm long (3ft wide and 6ft 3ins long). As the name suggests, they’re ideal for one person and small bedrooms. They’re also great for children as they are cheaper, but still account for all growth spurts from roughly 4 years of age right through to teens.

Best for: one person

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What size is a small single bed and mattress?

Small single beds and mattresses boast compact dimensions, measuring 75cm in width and 190cm in length (equivalent to 2 feet 6 inches in width and 6 feet 3 inches in length). These beds are purposefully crafted to snugly fit within narrower kids' bed frames and guest beds. Their design prioritises space efficiency, making them a perfect choice for those seeking to maximise room space, especially when setting up spare rooms for guests.

Best for: Children from roughly 4 years’ old, small rooms and guest beds

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What size is a toddler bed and mattress?

Toddler beds and mattresses come in petite dimensions, measuring 70cm in width and 140cm in length (equivalent to 2 feet 3 inches in width and 4 feet 6 inches in length). These beds are tailored to suit youngsters aged approximately between 1 and 4 years, particularly those who are transitioning from a cot to a single bed and require a gentle adjustment period. For a comprehensive overview of our selection of toddler beds, we invite you to explore our guide on choosing your child's first bed, which offers valuable insights and further information.

Best for: Toddlers and kids’ character beds

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What size is a cot mattress?

Cot mattresses are crafted with dimensions of 60cm in width and 120cm in length (equivalent to 23 inches in width and 47 inches in length). These specialised mattresses are purpose-built for infants who slumber in a cot, catering to the sleep requirements of babies from birth to approximately 3 years of age. Typically, these mattresses have a depth of around 10cm and are intentionally designed to be firmer than their adult counterparts. This firmness plays a crucial role in supporting your baby's development by ensuring proper alignment of their spine during sleep, contributing to their healthy growth.

Best for: Babies and toddlers who haven’t yet moved into a bed

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