Call 01772 786 666 to speak us directly
Or complete our Enquiry Form
Before we jump in to explaining what sizes we can make, it’s important to think about how to choose the right size. If you don’t have an existing bed base you are buying a replacement for – perhaps your moving home and got a new space to play with. Here are our top tips for picking the right size:
The most common UK mattress sizes range from Small Single (75×190 cm) to Emperor (200×200 cm). EU mattresses are typically longer at 200 cm, while US mattresses vary more in width. Use the charts below to compare international sizes and choose the best fit for your space.
| UK Mattress Size | Dimensions (W × L cm) | Dimensions (W × L feet) |
| Cot | 60 × 120 | 23″ × 47″ |
| Small Single | 75 × 190 | 2’6″ × 6’3″ |
| Single | 90 × 190 | 3’0″ × 6’3″ |
| Small Double | 120 × 190 | 4’0″ × 6’3″ |
| Double | 135 × 190 | 4’6″ × 6’3″ |
| King | 150 × 200 | 5’0″ × 6’6″ |
| Small Super King | 168 × 200 | 5’6″ × 6’6″ |
| Super King | 180 × 200 | 6’0″ × 6’6″ |
| Emperor | 200 × 200 | 6’6″ × 6’6″ |
| EU Mattress Size | Dimensions (W × L cm) | Dimensions (W × L feet) |
| EU Single | 90 × 200 cm | 3’0″ × 6’6″ |
| EU Double | 140 × 200 cm | 4’7″ × 6’6″ |
| EU King | 160 × 200 cm | 5’3″ × 6’6″ |
| EU Super King | 180 × 200 cm | 6’0″ × 6’6″ |
| US Mattress Size | Dimensions (W × L cm) | Dimensions (W × L feet) |
| Twin | 96 × 191 cm | 3’2″ × 6’3″ |
| Twin XL | 96 × 203 cm | 3’2″ × 6’8″ |
| Full | 137 × 191 cm | 4’6″ × 6’3″ |
| Queen | 152 × 203 cm | 5’0″ × 6’8″ |
| King | 193 × 203 cm | 6’4″ × 6’8″ |
| California King | 183 × 213 cm | 6’0″ × 7’0″ |
A UK Small Single measures 75 × 190 cm.
This is the narrowest standard adult size and is ideal where space is limited. Perfect for tighter children’s rooms, slim attic spaces, spare rooms with awkward layouts or paired as a trundle beneath another bed.
Shop UK Small Single Mattresses
A UK Single is 90 × 190 cm.
This is the UK’s most common one-person size and suits children, teens and adults alike. It offers a comfortable width for solo sleepers without overwhelming smaller rooms. If you’re upgrading a child’s bed or fitting out a guest room that will mostly host one person, this size leaves space for a bedside table and storage without making the room feel cramped.
A UK Small Double measures 120 × 190 cm.
Also known as a “three-quarter,” it provides noticeably more width than a single, making it ideal for young adults, solo sleepers who like to stretch out, and guests who appreciate extra room. Two people can share it, though it’s a snug fit which makes it useful in multipurpose rooms where flexibility matters.
Shop UK Small Double Mattresses
A UK Double is 135 × 190 cm.
This is traditionally considered the standard couple’s size in the UK, though many people underestimate how little personal space it offers when two adults are sharing. A double works brilliantly in mid-sized bedrooms, rented homes, and guest rooms, offering a good balance of comfort and practicality. For couples who value sleeping space or who often disturb each other stepping up to a king often makes a noticeable difference.
A UK King measures 150 × 200 cm.
The extra width and length make it a favourite for couples and taller sleepers. That additional 10 cm of length (compared to a double) can make a world of difference if you’re over 6ft tall, and the extra width helps reduce partner disturbance. A king-size mattress suits most modern main bedrooms and tends to feel like the “just-right” upgrade for people coming from a double.
A UK Small Super King measures 168 × 200 cm.
This lesser-known size sits perfectly between King and Super King wider than a King but without the full footprint of a 180 cm bed. We call it the Goldilocks bed.
It’s ideal for couples who want generous sleeping space but don’t want the bed to dominate the room visually. If your bedroom can’t quite accommodate a Super King comfortably, a Small Super King offers a luxurious middle-ground.
Shop UK Small Super King Mattresses
A UK Super King is 180 × 200 cm.
This is the size many people associate with hotel comfort. It provides ample space for two adults and is especially well-suited to restless sleepers, those with different schedules, or families with little ones or pets who make occasional nighttime appearances. A Super King works best in larger bedrooms where there’s enough space around the bed to move comfortably.
A UK Emperor measures 200 × 200 cm.
The largest of the standard UK sizes, an Emperor is the size that makes a bedroom feel like a suite. Works beautifully in large, well-proportioned rooms. It’s designed for those who want exceptional space and comfort, tall sleepers, couples who value personal room, or families who regularly pile in on weekend mornings.
Because of its impressive size, it’s essential to measure doorways, staircases and access routes.
What size is an EU Single mattress?
An EU Single is 90 × 200 cm, slightly longer than its UK equivalent. A great option for taller teenagers and adults, especially in modern homes with European bed frames.
What size is an EU Double mattress?
An EU Double measures 140 × 200 cm. Wider than a UK double, it gives solo sleepers exceptional space and offers couples a more comfortable middle-ground than a UK small double.
What size is an EU King mattress?
An EU King is 160 × 200 cm, sitting between UK King and Small Super King widths. A popular choice across Europe, offering generous space without dominating the room.
What size is an EU Super King mattress?
EU Super Kings are generally 180 × 200 cm — the same as a UK Super King. Perfect for couples, families, and anyone who prefers a roomy, undisturbed sleep.
What size is a US Twin mattress?
A US Twin measures 99 × 191 cm. Ideal for children, teens, and compact rooms — close in size to a UK Single but slightly wider.
What size is a US Twin XL mattress?
A US Twin XL is 99 × 203 cm, adding extra length for tall sleepers. Common in university dorms and great for loft conversions or guest rooms needing versatility.
What size is a US Full mattress?
A US Full (similar to a UK Double) measures 137 × 191 cm. Comfortable for one, cosy for two. A good upgrade from a Twin for solo sleepers who want more space.
What size is a US Queen mattress?
A US Queen is 152 × 203 cm, comparable to a UK King in overall feel. It’s the most popular couple’s size in the US thanks to its balance of width, length and room-friendliness.
What size is a US King mattress?
A US King measures 193 × 203 cm, making it wider than any standard UK mattress. Ideal for couples who value maximum sleeping space.
What size is a US California King mattress?
A US California King is 183 × 213 cm — slightly narrower than a US King but noticeably longer. A favourite for tall sleepers or long, narrow rooms.
Mattress depth can make a noticeable difference to how a bed feels. Deeper mattresses usually contain more natural fibres and more generous comfort layers, which create a fuller, more enveloping feel.
At Odd, all of our mattresses are deep, breathable, and two-sided. Each model has its own depth, determined by the natural materials inside from cotton and lambswool to horsehair and cashmere. Because everything is made by hand, small variations are normal, and natural fillings will settle gently over the first few weeks. Our entry level models start at 26cm and go up to 33cm at the top of the range. You can find the exact depth of each mattress on the product page.
Depth has no impact on compatibility with slatted or divan bases.
Usually no. EU bed frames are typically longer (200 cm) and sometimes wider than their UK equivalents. A UK mattress will often leave gaps at the sides or foot of the frame. If you already have an EU frame, it’s best to choose the matching EU size or we can make a bespoke mattress that fits it perfectly.
Most IKEA mattresses follow EU measurements, not UK ones. That means a UK mattress may not sit neatly on an IKEA bed frame, and an IKEA mattress may be too long for a UK frame. If you’re pairing an IKEA frame with an Odd company mattress, choose the EU size or ask us to make a made-to-measure version.
Always measure the bed frame, not the mattress you’re replacing. Frames vary, and the internal space is what matters. Measure the width and length inside the frame, then check you have enough space in the room for easy movement. A quick measurement now means a mattress that fits beautifully later.
