Choosing between a single and king single mattress often comes down to one thing: space. Both sizes are designed for one sleeper, but a king single gives you extra room to stretch out without taking up as much floor space.
If you're furnishing a child's room, guest room, or smaller bedroom, both options can work well. The right choice depends on who will be sleeping on the mattress, how much room is available, and whether you want a bed that will suit their needs for years to come.
What’s the Difference Between a Single Mattress and a King Single Mattress?
It goes without saying that a king single mattress is simply a bigger version of a single mattress.
A single mattress measures 92 cm in width and 188 cm in length. Meanwhile, the king single measures 15 cm longer and wider than a single, at 107 cm in width and 203 cm in length.
These 15 centimetres can make a big difference for whoever is sleeping on the mattress. King single mattresses provide significantly more legroom for stretching and sleepers who tend to move around while sleeping.
Who Is A Single Mattress Best Suited For?
A single mattress is best suited for growing children, shorter sleepers, or anyone who lives in a smaller apartment or compact space. This size is commonly used in kids’ bedrooms, small bedrooms, guest rooms, and any room that has limited space.
Who Is a King Single Mattress Best For?
King single mattresses are ideal for taller sleepers, teenagers who are growing out of their single bed and transitioning to a bigger one, and anyone who requires additional space when sleeping.
Despite its larger size, it still conserves a reasonable amount of space, taking up less space than a double mattress. However, it may require a little more floor space in smaller spaces.
Single vs King Single: Side-by-Side Comparison
At first glance, the difference between a single and king single mattress doesn't seem huge. Both mattresses accommodate one sleeper and only have a 15 cm difference in length and width.
Apart from this, there are other distinct differences that can affect your decision on which one to buy. Let’s break down the other factors that set these two mattresses apart.
Sleeping Space and Comfort
A single mattress provides enough room for one sleeper, but there isn't much extra space for changing positions during the night. Children typically find this size comfortable, while some adults may feel restricted, especially if they're taller or tend to move around while sleeping.
Meanwhile, a king single mattress gives you an additional 15cm of width and length. While that may not sound significant on paper, it can make the bed feel noticeably more spacious. The extra room is particularly useful for:
- Teenagers experiencing growth spurts
- Adults sleeping alone
- Taller sleepers over 180cm
- People who frequently change sleeping positions
- Guest rooms used by a variety of visitors
If comfort is your top priority and the room allows for it, a king single generally provides a better sleeping experience.
Bedroom Size Requirements
A single mattress is often the better choice for smaller bedrooms where every centimetre counts. It leaves more floor space for bedroom furniture, bedside tables, storage units, or play areas.
A king single requires a larger footprint, but many modern bedrooms can comfortably accommodate the extra size without feeling crowded. As a general guide:
- Small children's rooms often suit a single mattress.
- Medium-sized bedrooms can usually accommodate either size.
- Teen bedrooms and guest rooms often benefit from a king single if space permits.
Ideally, you should aim to leave enough room around the bed for comfortable movement and access to wardrobes, doors, and furniture.
Cost Differences
A single mattress is usually the more budget-friendly option. Not only is the mattress itself generally less expensive, but associated costs such as bed frames, mattress protectors, and quilt covers also tend to be lower.
A king single mattress typically costs more because of its larger dimensions. Bedding and accessories are also slightly more expensive.
However, it’s also important to consider the bigger picture. A king single may offer better value over the long term if it remains suitable through teenage years and into adulthood, reducing the likelihood of needing another upgrade later.
Should You Upgrade From A Single To A King Single?
In many situations, upgrading can be worthwhile. If the current sleeper feels cramped, has recently grown taller, or is likely to outgrow their mattress soon, a king single can provide extra comfort without taking up as much room as a double mattress.
You may want to consider upgrading if:
- Your child is moving into their teenage years
- The sleeper is taller than average
- A guest room is regularly used by adults
- There is enough bedroom space available
- You want a mattress that will remain suitable long-term
On the other hand, if space is limited or the mattress is intended for younger children, a standard single may still be the most practical choice.
Find the Perfect Mattress Size at Bevmarks
A single mattress offers a practical and space-saving solution, while a king single provides extra room to stretch out and can remain suitable for many years.
At Bevmarks, you'll find a wide range of quality single and king single mattresses designed to support better sleep. If you're unsure which size is best for your home, our team of sleep experts can help you find a mattress that fits your space, budget, and sleeping needs.
Visit your nearest Bevmarks store and compare options in person, or contact us with any inquiries, and our team will provide the ideal mattress for you.