When shopping for a new bed or mattress, one of the most important steps is choosing the right size. Whether you’re furnishing a master bedroom, guest room, or a child’s space, understanding UK bed and mattress sizes ensures you get the perfect fit for your comfort and room dimensions.
In this complete guide, we break down all the standard UK mattress sizes, bed dimensions, and offer tips on how to choose the right one.

Why UK Bed and Mattress Sizes Matters
Buying the wrong mattress size can lead to discomfort, poor sleep, and wasted space—or worse, not enough space. UK bed and Mattress sizes differ slightly from European and US standards, so it’s important to check the dimensions before making a purchase, especially if you’re buying from an online retailer.
Standard UK Mattress Sizes
Below are the most common UK mattress sizes along with their measurements in both metric and imperial
Bed Size | Dimensions (cm) | Dimensions (inches) |
---|---|---|
Small Single | 75 x 190 | 2’6″ x 6’3″ |
Single | 90 x 190 | 3’0″ x 6’3″ |
Small Double (Queen) | 120 x 190 | 4’0″ x 6’3″ |
Double | 135 x 190 | 4’6″ x 6’3″ |
King | 150 x 200 | 5’0″ x 6’6″ |
Super King | 180 x 200 | 6’0″ x 6’6″ |
Each size serves a different purpose and suits different sleeping styles or room sizes. Let’s look at when each might be the best choice.
Choosing the Right Bed Size for Your Needs
Small Single (75 x 190 cm)
Ideal for children or very small guest rooms. It’s also perfect for bunk beds or narrow spaces.
Single (90 x 190 cm)
A popular option for children, teenagers, and solo sleepers. This size provides enough room to stretch out without taking up too much floor space.
Small Double (120 x 190 cm)
Also known as a “Queen” in the UK, this is a great option for single adults who want more room or for two people in tighter bedroom spaces. It’s especially common in guest rooms.
Double (135 x 190 cm)
One of the most common sizes for couples, a double bed fits comfortably in most standard UK bedrooms. It’s a versatile option that balances comfort and space.
King (150 x 200 cm)
Perfect for couples who like extra space. A king-size bed provides additional length and width, making it suitable for taller individuals or those who share their bed with pets or children.
Super King (180 x 200 cm)
The ultimate in sleeping luxury, the super king offers vast space and comfort. Ideal for large bedrooms and anyone who wants the most spacious sleep possible.
Things to Consider Before Choosing a Mattress Size
1. Room Dimensions
Measure your room carefully. A bed that’s too big can make the space feel cramped, while a bed that’s too small may look out of place.
2. Sleeping Habits
Do you toss and turn? Do you sleep with a partner or pets? These habits should influence the mattress size you choose.
3. Bed Frame Compatibility
Always make sure your mattress matches the frame size. UK Bed and Mattresses Sizes are not the same as European or US versions, so check your bed frame dimensions if you’re reusing or importing one.
4. Access and Delivery
Ensure the bed or mattress can be delivered easily—especially for larger sizes. Measure stairways, hallways, and door frames.
UK vs. EU and US Mattress Sizes: Know the Difference
Many shoppers get caught out by ordering a mattress from a European or American brand, only to find the sizes don’t match. For example, a UK King (150 x 200 cm) is not the same as an EU King (160 x 200 cm) or a US King (193 x 203 cm). Always double-check dimensions and labels.
Final Tips for Mattress Shopping in the UK
- Test in-store if possible. Comfort can vary by brand even within the same size.
- Check return policies. Some online mattress retailers offer sleep trials.
- Don’t forget depth. Mattress thickness varies and can affect how it fits on your bed frame or under fitted sheets.
Conclusion
Finding the right UK bed and mattress size is essential for your comfort, health, and overall bedroom design. From compact singles to luxurious super kings, Divan Beds to Divan Ottoman‘s, there’s a size to suit every sleeper and every room. Use this guide to measure your space, understand your sleeping needs, and make the best choice for a better night’s sleep.