Choosing the right mattress size sounds simple until you start thinking about bedroom space, bed frames, daily comfort, and how long the mattress needs to serve you. For many buyers in Singapore, a single size feels like the practical starting point because it is compact, easy to plan around, and well-suited to one sleeper.
This guide explains the standard single mattress size in centimeters, who it suits best, how it compares with larger sizes, and what else to check before you buy. By the end, you should have a clearer sense of if single size fits your room, your sleep habits, and your longer-term plans.
How Big is a Single Mattress in CM?
Most Singapore buyers will see a single mattress listed at about 91 cm x 190 cm on Somnuz guides, though some Somnuz pages round the width to 90 cm x 190 cm. In practical terms, this still points to the same standard single size category, so it is best to confirm the exact product measurement before purchase.
Here is the quick answer:
- Width: about 90 to 91 cm
- Length: 190 cm
- Best for: one sleeper
- Common use: children’s rooms, guest rooms, and compact bedrooms
Room planning matters as much as the mattress measurement itself. Bed frame thickness, side tables, wardrobes, and walking space can all change how comfortable the room feels once everything is in place. For a broader size comparison, this mattress size guide in Singapore can help you see how single compares with other common local options.
Who is a Single Mattress Best for?

Single size works best for buyers who want a practical one-person bed without taking up too much room. Somnuz’s own guidance places single mattresses in children’s rooms, compact spare rooms, and solo sleeper setups where extra width is not essential.
Best Fit for Children, Teens, and Guest Rooms
For growing children, a single size often gives enough sleeping space while helping the room stay open and usable. Guest rooms can also benefit from this footprint because it leaves more floor area for storage, movement, or flexible use.
Smaller HDB and condo bedrooms often feel easier to plan when the bed does not dominate the room. If you want to look at brand-relevant options before deciding, you can review these single mattress options in Singapore.
When a Single Mattress May Feel Too Small
Single size is not always the most comfortable long-term choice for every adult. Space can feel limited if you are taller, move around often in sleep, or simply prefer more room to stretch.
Use these points as a quick check:
- A single size can work well for one sleeper in a compact room
- It may feel tight for taller adults
- It may feel limiting for active sleepers
- It is usually not the right choice for couples
Single vs Super Single vs Queen: What Changes?
Many buyers start by searching for a single mattress size in cm, then realize the real decision is about comfort and room use. Width changes the experience more than most people expect, especially if you spend time reading, scrolling, or stretching out in bed.
|
Mattress Size |
Dimensions |
Common Fit |
|
Single |
91 x 190 cm |
One sleeper, children, guest rooms, compact spare rooms |
|
Super single |
107 x 190 cm |
Solo adults who want more width |
|
Queen |
152 x 190 cm |
Couples and most master bedroom setups |
Somnuz’s published guides list single at about 90 to 91 x 190 cm, super single at 107 x 190 cm, queen at 152 x 190 cm, and king at 183 x 190 cm.
Super single gives you about 16 cm more width than a single. That extra space can make a noticeable difference for solo adults. Queen size is usually the more sensible step once shared sleep becomes part of the plan.
Which Size Works Better for HDB and Condo Bedrooms?
Single size usually makes sense when the room also needs to fit a desk, storage, or a wider walking space. A super single often suits solo adults who want a bit more freedom without moving up to a much larger bed. Queen size is widely treated as the more practical option for couples in average HDB master bedrooms.
What Else Should You Check Before Buying a Single Mattress?

Size answers only one part of the buying question. Real comfort also depends on how the mattress feels, how it fits your routine, and how well it suits the room around it.
Use this checklist before buying:
- Check your bed frame size first
- Measure walking space around the bed, not just wall-to-wall room size
- Think about your height and sleep movement
- Consider mattress thickness if your frame sits high or low
- Factor in airflow and surface comfort for humid Singapore nights
- Match the support feel to your comfort preference, not just the dimensions
Local climate matters too. Somnuz’s Singapore-facing guidance highlights breathable materials and airflow because warm, humid nights can affect how comfortable a mattress feels over time.
Room Space Matters as Much as Mattress Size
Compact rooms benefit from careful planning. A good fit is not only about getting a mattress into the room. Daily use should still feel easy once you add side tables, wardrobes, study furniture, or children’s storage.
Comfort and Support Still Matter After Size
Single size may fit the room well, but mattress feel still affects comfort night after night. Breathability, surface feel, firmness, and overall support all play a part, even for one sleeper. If you want help comparing comfort, support, and model differences more clearly, you can compare our mattresses before narrowing your choice.
Is a Single Mattress Enough for Long-Term Use?

A single size can be a sensible long-term choice in the right setup. It often works well for children, teenagers, guest rooms, and solo adults who prefer a more compact room layout.
Long-term fit becomes less convincing when sleep needs start to change. Extra width may feel more worthwhile if you are moving from a child’s room to an adult bedroom, shifting into a larger home, or wanting more space as a taller or more active sleeper. Future plans matter too. Once shared sleep enters the picture, a single size usually stops being practical.
For many buyers, the better question is not “Is single enough?” but “Will single still suit the way I sleep a few years from now?” That mindset can help you choose with less second-guessing.
Single Mattress Size in CM and How to Choose the Right Fit
Single mattress size in cm is simple on paper, but the right choice depends on more than width and length. Room layout, sleeper height, comfort preference, and future use all shape the better fit.
Single size is often a smart option for one sleeper in a child’s room, guest room, or compact bedroom. Super single may feel better for solo adults who want more freedom to move. Queen usually makes more sense for couples or buyers planning a longer-term master bedroom setup.
Need Help Comparing Your Options?
You can start with the mattress collection to compare sizes and comfort options online at your own pace. If you want a better sense of scale, firmness, and overall feel, visit our mattress showroom Singapore and try the range in person. Clear guidance from the team can help you choose with more confidence.
Frequently Asked Questions
What is the Standard Single Mattress Size in CM?
Most single mattresses in Singapore are listed at about 91 cm x 190 cm, though some guides round the width to 90 cm. Both refer to the same standard single size category.
Is a Single Mattress Enough for One Adult?
Single size can work for one adult, especially in a smaller room. Comfort depends on your height, sleep movement, and how much personal space you prefer.
What is the Differnce Between a Single and a Super Single Mattress?
Main difference is width. Single is about 91 cm wide, while super single is about 107 cm wide. Length stays the same at 190 cm, so super single mainly gives you extra room to move.
Will a Single Mattress Fit in a Small HDB Bedroom?
Single size often suits small HDB bedrooms because it keeps the bed footprint compact. This can leave more space for storage, study furniture, or easier movement around the room.
How Do I Know if I Should Choose a Larger Mattress Size?
Think about your height, how much you move in sleep, and how the room will be used over time. More width usually helps if you feel cramped easily or want the mattress to suit future needs better.