What Is Single Mattress Size? Exact Dimensions and Who It Suits Best

If you’re asking “What Is Single Mattress Size”, you’re usually trying to find out the exact dimensions, how it compares to other sizes, and whether it will fit a specific sleeper or room. This guide answers those questions in a clear, practical way so you can decide if a single mattress is the right fit.

What is a single mattress size?

In many regions, a single mattress is a compact bed size designed for one person. A commonly used single mattress size is:

• 90 cm x 190 cm
  (approximately 3'0" x 6'3")

However, dimensions can vary slightly by country or manufacturer. In some places, what’s called a “single” might be very close to what others call a “twin.”

When searching “What Is Single Mattress Size,” it’s important to keep in mind that the label “single” is not always universal. Always check the exact measurements rather than assuming based on the name alone.

How does a single mattress compare to other common sizes?

To better understand what a single mattress size is, it helps to see it in context with nearby sizes:

*Dimensions vary slightly by region and manufacturer.

This overview shows that a single mattress is narrower than a double but wider than a “small single”, making it a compact yet practical option for many sleepers.

Who is a single mattress best for?

A single mattress size is generally best suited for:

• Children and teenagers
  It offers enough room to grow without taking up too much floor space.

• Smaller bedrooms or guest rooms
  Ideal where space is limited but a full bed is preferred over a sofa or futon.

• Individual sleepers who don’t move a lot
  Those who sleep fairly still often find a single wide enough for comfort.

• Bunk beds or daybeds
  Single mattresses frequently match the dimensions of many bunk or cabin bed frames.

If you are taller than average or prefer extra room to spread out, you may want to compare the single to long single or larger sizes.

What should I consider before choosing a single mattress size?

When deciding whether a single mattress size will work for you, consider these factors:

1. Room size and layout

Measure your room and think about clearance for walking, storage, and furniture. A single mattress often works well in:

• Smaller bedrooms
• Shared rooms with two separate beds
• Rooms that also need to function as a study or playroom

Aim to leave enough space around the bed so the room does not feel cramped.

2. Sleeper height and build

Because a typical single mattress is around 190 cm (6'3") in length, taller sleepers might prefer:

• A long single (around 200 cm long)
• Or a larger size, depending on their comfort preferences

For width, a single suits many children, teens, and adults with average or smaller body frames.

3. Future needs

If the bed is for a growing child or a teenager, think about:

• How long you expect the bed to be used
• Whether they may eventually want more space, such as a double

In some cases, starting with a single makes sense for space reasons, with the option to move to a larger bed later.

4. Bedding and accessories

Check that fitted sheets, mattress protectors, and bed frames match the exact size you’re buying. Even small differences in measurements can affect how well bedding fits, especially for deep mattresses or tight-fitting sheets.

Is a single mattress comfortable for adults?

For many adults, a single mattress size can be comfortable, especially if:

• The sleeper is not particularly tall
• They don’t share the bed
• They don’t mind a more compact sleeping surface

Adults who like to stretch out, change positions often, or sleep with pets may feel better supported by a wider bed, such as a small double, double, or queen (depending on regional naming).

Is “single” the same everywhere?

Not always. When people look up “What Is Single Mattress Size”, confusion often comes from regional differences:

• In some countries, “single” and “twin” are similar but not identical.
• In others, there may be small single, single, and long single variants.
• Names like “king single” or “super single” may also appear, with dimensions between a single and a double.

Because of this, always confirm the exact measurements (length and width in cm or inches) instead of relying on the name alone.

✅ Quick Mattress Takeaways

Key points consumers should understand about “What Is Single Mattress Size”

• A typical single mattress size is about 90 cm x 190 cm, designed for one sleeper.
• Dimensions vary by country and brand, so always check the exact measurements.
• A single mattress works well for children, teens, guest rooms, and smaller spaces.
• Taller or larger sleepers may prefer a long single or wider size for extra comfort.
• Bedding and bed frames must match the specific single size to fit properly.
• The term “single” is not globally standardized, so comparing measurements is more reliable than comparing names.

Understanding what a single mattress size is in real-world dimensions, and how it fits your room and body, makes it easier to choose a bed that feels practical and comfortable for everyday use.