Mattress Size Guide

Your journey starts here. When it comes to finding the perfect mattress, you need to firstly know how big you can go. This quick guide will give you the lowdown on all the UK mattress sizes and European mattress sizes we offer, as well as a host of useful tips for choosing the perfect size for your needs.

UK standard mattress sizes

SINGLE

SINGLE

90cm x 190cm

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SMALL DOUBLE

SMALL DOUBLE

120cm x 190cm

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DOUBLE

DOUBLE

135cm x 190cm

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KING

KING

150cm x 200cm

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SUPER KING

SUPER KING

180cm x 200cm

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COT & COT BED

COT & COT BED

60cm x 120cm / 70cm x 140cm

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Single

UK single mattress dimensions
3' x 6'3" (90 x 190cm)
European single mattress dimensions
3' x 6'6" (90x200cm)

Single

A small single mattress can be a great space-saver, while still providing ample room for growing children and teens. Single mattresses are also ideal for use in guest bedrooms and attic rooms.

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Small double

UK small double mattress dimensions
4' x 6'3" (120 x 190cm)

Small double

If you're a couple and have limited space, then a small double bed can offer a cosy solution if a full-size double is too wide.

A small double 4ft mattress is also great for rapidly-growing teenagers or individuals who need that extra-bit of room to stretch out and be comfy.

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Double

UK double mattress dimensions
4'6" x 6'3" (135 x 190cm)
European single mattress dimensions
4'7" x 6'6" (140x200cm)

Double

Double mattresses are popular with couples who are also first-time buyers, offering sufficient space without breaking the bank.

Of course, individuals looking to really spread-out eagle-style every morning can also go for a double mattress that'll give them all the room they need.

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King

UK king mattress dimensions
5' x 6'6" (150 x 200cm)
European king mattress dimensions
5'3" x 6'6" (160x200cm)

King

For those who've got the room, king size mattresses are hard to resist. A restless sleeper can go through the night without disturbing their partner, and lazy duvet days step-up a notch thanks to the ample room provided.

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Super King

UK super king mattress dimensions
6' x 6'6" (180 x 200cm)

Super King

A super king-sized mattress offers the utimate in comfort and luxury. If you've got the space in your bedroom, then a super king mattress will provide all the room you need for an indulgent night's sleep.

While they're built for two people to really stretch-out, there's no stopping the whole family jumping in on a lazy Sunday morning.

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Cot mattress & cot bed mattress

UK cot mattress dimensions
1'9" x 3'9" (60 x 120cm)
UK cot bed mattress dimensions
2'3" x 4'6" (70 x 140cm)

Cot mattress & cot bed mattress

When buying a mattress for your little one you want it to be safe, comfy and the perfect size.

The mattress you choose should be a snug fit, with gaps of no more than 4cm down the sides and a mattress thickness of 8-10cm.

You also want to make sure the quality is top notch and safety is completely assured. All Silentnight mattresses come with the crucial BSI number: BS 1877-102011+A1:2012, which means they meet British Standards safety requirements for bedding.

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Useful tips for choosing the right size

Useful tips for choosing the right size

Ensure that the mattress dimensions are 10cm longer than the tallest person using the mattress. Nobody wants cold feet on a chilly winter's night after all.

You also want to be able to stretch when you wake to really start the day. Get the width right by tucking both hands under your head and if your elbow touches the edge of the mattress or the person next to you, then you may need larger mattress measurements.

If you're giving your bedroom a makeover make sure you measure the space you have in your room. It could be the difference between a modest double and a mega super king.

Free UK Delivery

Our standard 2 Man Delivery Service (Mattresses & Divans)

  • Free UK delivery* to your room of choice throughout England, Scotland and Wales.
  • We provide a free professional two man delivery service that will deliver your purchases to your room of choice.
  • This service includes the set up of your bed or mattress in your chosen room, plus the removal and takeaway of the packaging.
  • We deliver most items Monday to Friday, 9am - 6pm.
  • On average products are delivered within 7 - 14 days.
  • *Some restrictions apply, please visit our delivery information for more detail.

Next Day Delivery Service (Mattresses/Bedframes)

  • Free Next Day Delivery, via a courier, to the door only.
  • A card will be left, with a contact number to call for re-delivery, if there is no one in.
  • Delivery will be between 8am - 7pm
  • If ordered with another item, the Next Day Delivery will be delivered first, usual delivery terms apply for additional items (this may incur 2 deliveries)

60 night comfort trial

We're so confident that our beds and mattresses will provide you with a great night's sleep that we offer the security of the very best in terms of comfort guarantee.

  • At Silentnight we want to be sure that you are satisfied with the comfort of your new bed or mattress which is why we offer a total peace of mind 60 night comfort guarantee. If for any reason you are not totally satisfied we will exchange your purchased bed or mattress for an alternative Silentnight bed or mattress of your choice.
  • We do however ask that you try your new bed for at least four weeks for your body to adjust to your new bed or mattress.
  • For full terms and conditions, please click here.

Total Quality Assurance

Before it gets to you your bed has been through a lot

  • All our mattresses, upholstered bases and headboards are made in the UK
  • All of our product meet European standards and exceed British standards
  • All our Upholstered beds and mattresses ordered through Shop.Silentnight are made to order
  • This means they are not stored for prolonged periods of time and are shipped to you direct from our factory.

Testing

  • Accredited onsite laboratory to bring the best products to you
  • Every Silentnight mattress type is tested to ensure it exceeds all British standards
  • Silentnight products are fully certified by the Forest Stewardship Council®(FSC®) FSC-C104461
  • We are full members of the Furniture Industry Sustainability Program.
Superbrands The Sleep Council nbf approved