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Small Double Mattresses

Measuring 4ft by 6ft 3" (120 cm x 190 cm) a 4ft small double mattress is perfect if you're looking for an extra bit of space in your bedroom - without sacrificing sleeping comfort. Enjoy the best of both worlds with our massive range of small double mattresses, including pocket sprung, memory foam, latex and more. Choose from the biggest UK brands including Silentnight, Sealy and more.

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Based on 23,378 reviews

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We were kept updated all the way through from purchase right up until delivery which was very helpful.

Linda Rudd 11th Jul
Trustpilot Star rating Verified

From ordering to delivery they were very good. Ordering offices very easy, delivery very quick and delivery company very efficient and careful.

Anita B 9th Jul
Trustpilot Star rating Verified

So far so good with the mattress, the quality is excellent and is as described. First class speedy delivery service received and would not hesitate to recommend.

Vicki 9th Jul

Help & Buying Guides

How to choose the best small double mattress

Our small double mattresses are the epitome of comfort, providing you with an irresistibly soft and sumptuous surface to sleep on every night. Offering a spacious area for those who snooze alone or a cosy setup for two adults to share, there’s no denying that our 4ft mattresses are beyond comfortable for your small double bed.

To ensure you get the perfect night’s sleep, our small double mattresses are available with a range of useful features. From memory foam technology to spinal support, as well as removable covers and waterproof panels, you can take your pick from a plethora of styles to make sure your chosen mattress meets your exact requirements.

We understand the importance of a good night’s sleep, meaning you can trust us when it comes to choosing a new mattress. Regardless of your specific needs, finding the right model should be simple when you shop our small double bed mattress range.

What size is a small double mattress?

A small double bed mattress is 4ft by 6ft 3". In metric dimensions, this is equal to 120 x 190 cm - approximately 6 inches narrower than standard double mattresses. They’ve become more popular over recent years, as small bedrooms are now common, especially within apartments and for those who live in cities. 

Small double mattresses are also super popular for teenagers and guest rooms and work great with our range of small double divan beds.

What are the different types of small double mattresses?

Just like their bigger brothers, small double mattresses come in a wide variety of types. Memory foam mattresses are convenient and provide you with plenty of comfort and support, moulding to the shape of your body. The classic sprung option is a budget-friendly choice, while pocketed spring mattresses provide exceptional support with less movement transference. Look out for hypoallergenic options if you suffer from asthma or allergies, and orthopaedic versions if you prefer a firmer feel. With free delivery to UK mainland addresses, small double mattresses are a great choice if you’re a little short on space!

Why choose a small double mattress?

Here are the main reasons to buy a small double mattress:

  • Extra floor space for your bedroom

  • More room for extra furniture

  • Greater freedom to design your room to your specific needs

  • Less expensive than other mattresses

Can you get a cheap small double mattress?

If you’re after cheap 4ft small double mattresses, you can rely on us when it comes to finding a model that fits your budget. Our cheap small double mattresses are fantastic value for money without compromising on quality. Be sure to check out our deal of the week for the best value for money or use the filters to access our range of cheap small double mattresses in price order.

The cheapest small doubles are typically standard sprung 4ft mattresses. If cost is the key factor, we recommend starting here. But you might find it better value for money to spend a little more and choose a mattress that you’ll be happy with for years to come. If you struggle to sleep because of your current standard sprung mattress, consider opting for a memory foam mattress instead.

Can a small double mattress fit two adults?

A small double can fit two adults of average size quite comfortably. As they measure 4’ wide x 6’3” long, you should be able to snuggle up together and still have enough space to stretch out if you want.

Can you put a small double mattress on a double bed?

It’s not advisable, as there will be a gap around the sides that could mean the mattress moves around on the bed frame or allows a draught to blow between the mattress and the frame. It’s always best to get the correct size mattress to match your bedframe for maximum comfort. 

Why choose MattressNextDay for your 4ft small double mattress?

Our comfortable 4ft mattresses are all handmade in the UK. We supply some of the biggest UK brands and we also offer free, fast delivery and can dispose of & recycle your old mattress without any hassle. Find out more by contacting our team or if you still need help in deciding which mattress is right for you, then read our informative mattress buying guide

Size Imperial Metric
Cot Mattress 3'9" x 1'9" 120cm x 60cm
Cot Bed Mattress 4'6" x 2'3" 140cm x 70cm
Adjustable Small Single 2'6" x 6'6" 75cm x 200cm
Adjustable Single 3' x 6'6" 90cm x 200cm
Adjustable Small Double 4' x 6'6" 120cm x 200cm
Adjustable Double 4'6" x 6'6" 135cm x 200cm
Small Single 2'6" x 6'3" 75cm x 190cm
Single 3' x 6'3" 90cm x 190cm
Small Double 4' x 6'3" 120cm x 190cm
Double 4'6" x 6'3" 135cm x 190cm
King Size 5' x 6'6" 150cm x 200cm
Super King 6' x 6'6" 180cm x 200cm
European Small Single 2'8" x 6'6" 80cm x 200cm
European Single 3' x 6'6" 90cm x 200cm
European Double 4'7" x 6'6" 140cm x 200cm
European King Size 5'3" x 6'6" 160cm x 200cm

All mattress sizes given are approximate and stated sizes refer to the sleeping surface only. Mattresses sizes may vary slightly from their stated dimensions due to manufacturing tolerances, please allow +/- 2 inches (5cm).

Support Best for
 Icon for Memory Foam Memory Foam Body moulding and pressure relieving
 Icon for Natural Fibres Natural Fibres Unrivalled comfort, naturally temperature-regulating
 Icon for Latex Latex Breathable, supportive and eco friendly
 Icon for Cool Gel Memory Foam Cool Gel Memory Foam Active cooling properties, ideal for hot sleepers
 Icon for Soft White Fibres Soft White Fibres Hypoallergenic polyester, soft and durable

Support Best for
 Icon for Pocket Springs Pocket Springs Individual springs for tailored support
 Icon for Foam Foam Conforms to your body's shape, silent (no springs)
 Icon for Open Coil Springs Open Coil Springs Traditional, interlinked springs
 Icon for Pocket Springs Latex Bouncy yet supportive, great for hot sleepers

Firmness Best for
Good for side sleepers, a softer level of support
Good all-rounder for front, side or back sleepers
Medium - Firm
Good for people who change sleeping position
Good for people who sleep on their front or back
Extra Firm
The firmest level of support, also known as orthopaedic

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