What size is a king size single bed? This is a common question for anyone upgrading from a standard single or shopping for a space-efficient yet comfortable bed. A king size single bed offers extra length and width compared to a regular single, making it ideal for taller sleepers, teenagers, and compact bedrooms. However, many people confuse it with a king bed or assume the size is the same everywhere. In this guide, you’ll find the exact king size single bed dimensions, comparisons with other bed sizes, and tips to help you decide if it’s the right fit for your needs.

What Is a King Size Single Bed?

A king size single bed is a larger version of a standard single bed, designed to provide extra comfort without taking up too much space. It is wider and longer than a regular single bed, making it a popular choice for people who want more sleeping room but don’t have space for a double or queen bed.

Despite the name, a king size single bed is not the same as a king bed. The term “king” here refers to added size compared to a standard single, not a full king-size mattress. This bed size is especially common in countries like Australia, New Zealand, and parts of Asia.

King size single beds are often used for teenagers, tall adults, guest rooms, and smaller bedrooms where space efficiency matters.

King Size Single Bed Dimensions

Understanding the exact dimensions of a king size single bed is important before buying a bed frame, mattress, or bedding. While measurements can vary slightly by region or brand, the standard dimensions are widely accepted.

King Single Bed Size in Centimeters (cm)

The standard king single bed size in centimeters is:

• Width: 107 cm

• Length: 203 cm

This extra length makes a big difference for taller sleepers who feel cramped on a regular single bed. The additional width also provides more comfort for people who move around during sleep.

King Single Bed Size in Inches

For those who prefer measurements in inches, the king single bed dimensions are:

• Width: 42 inches

• Length: 80 inches

In terms of length, a king single bed is similar to a queen bed, but it is much narrower. This balance makes it a practical option for rooms where length is available but width is limited.

King Single Bed vs Other Bed Sizes

Comparing a king single bed with other common bed sizes can help you decide whether it’s the right choice for your needs, room size, and sleeping habits.

King Single vs Single Bed

A standard single bed is usually 90 cm wide and 190 cm long, while a king single bed is wider and significantly longer.

The king single bed offers:

• More legroom for taller sleepers

• Better comfort for teenagers and adults

• Extra space for movement during sleep

A single bed may be suitable for young children, but many people outgrow it quickly. A king single bed provides a longer-term solution without moving to a much larger bed.

King Single vs Double Bed

A double bed is wider than a king single but shorter in length. This means:

• A double bed suits couples better

• A king single bed suits taller individuals better

If you sleep alone and value legroom more than width, a king single bed can be more comfortable than a double bed, especially in smaller bedrooms.

King Single vs Queen Bed

A queen bed is much wider and designed for two people, while a king single bed is meant for one sleeper.

Choose a king single bed if:

• You sleep alone

• Your bedroom is small

• You want to save space and cost

A queen bed is better for couples, but for single sleepers, a king single bed often provides enough comfort without overwhelming the room.

Who Is a King Size Single Bed Best For?

A king size single bed is designed for people who need more space than a standard single bed but don’t require a bed meant for two sleepers. It offers a practical balance between comfort and space-saving, making it suitable for a wide range of users.

This bed size is especially popular for teenagers and growing kids. As children grow taller, a regular single bed often becomes uncomfortable. The extra length of a king single bed allows them to sleep comfortably for several years without needing an upgrade.

Tall adults also benefit greatly from a king size single bed. The extended length helps prevent feet from hanging off the edge, which is a common issue with standard single beds.

It is also ideal for single sleepers who want extra comfort, guest rooms, and smaller bedrooms where space is limited but comfort is still a priority.

King Single Mattress Size – Is It the Same?

Yes, the king single mattress size is designed to match the king single bed frame exactly. The mattress and bed frame must be the same size to ensure proper support, comfort, and safety.

A standard king single mattress measures 107 cm wide and 203 cm long, which aligns perfectly with the bed frame dimensions. Using a mattress that is too small can cause gaps, while a mattress that is too large may not fit the frame at all.

When buying a king single mattress, it’s important to:

• Check the manufacturer’s size specifications

• Ensure compatibility with your bed frame

• Consider mattress depth, especially for fitted sheets

Always measure your bed frame before purchasing a mattress, as slight variations can exist between brands.

Room Size Requirements for a King Single Bed

Before choosing a king size single bed, it’s important to consider how much space you have in your bedroom. While it is more compact than larger beds, it still requires enough room for comfortable movement.

The minimum recommended room size for a king single bed is around 3 meters by 3 meters. This allows space for walking around the bed and placing basic furniture such as a bedside table or small dresser.

If your room is smaller, a king single bed can still work with smart layout planning. Placing the bed against a wall or using storage beds can help maximize space.

Proper spacing improves comfort, airflow, and overall bedroom functionality, making the room feel less crowded.

Pros and Cons of a King Size Single Bed

A king size single bed offers several advantages, but like any bed size, it also has a few limitations. Understanding both can help you decide if it’s the right option for your space and lifestyle.

Pros

One of the biggest advantages of a king size single bed is the extra length. It provides more legroom than a standard single bed, making it ideal for taller sleepers. The added width also improves comfort by allowing more movement during sleep.

Another major benefit is space efficiency. A king single bed fits well in smaller bedrooms while still offering more comfort than a regular single. It is also generally more affordable than double, queen, or king beds, both in terms of the bed frame and mattress.

Cons

The main drawback of a king size single bed is that it is designed for one person only. It is not suitable for couples or shared sleeping. Bedding options can also be slightly limited compared to more common bed sizes like double or queen.

Additionally, because king single beds are more common in certain regions, finding accessories such as bed frames or specialty mattresses may take more effort in some markets.

Conclusion

A king size single bed is an excellent choice for anyone who needs more comfort than a standard single bed without moving to a much larger option. With its extra width and generous length, it works especially well for teenagers, tall adults, and single sleepers who value legroom. It also fits neatly into smaller bedrooms, making it a smart space-saving solution.

By understanding the exact dimensions, room requirements, and who it’s best suited for, you can confidently decide if a king size single bed meets your needs. Always measure your space and compare options before buying to ensure the best fit and long-term comfort.

Things to Consider Before Buying a King Single Bed

Before purchasing a king size single bed, take time to evaluate your needs and available space. Start by measuring your bedroom to ensure the bed fits comfortably without making the room feel crowded.

Consider who will be using the bed and for how long. For growing children or teenagers, a king single bed can be a long-term investment. For guest rooms, it offers comfort without sacrificing space.

Also think about mattress firmness, bed frame style, and storage needs. Choosing the right combination will help you get the most value and comfort from your king single bed.

FAQ

Many people have similar questions when considering a king-size single bed. Below are clear and simple answers to the most common ones.

Is a king single bigger than a single bed?

Yes, a king single bed is both wider and longer than a standard single bed. It offers more sleeping space and is more comfortable for teenagers and adults.

Can two people sleep on a king single bed?

A king single bed is designed for one person. While two people could fit for a short time, it would not be comfortable for regular use.

Is a king single the same as a twin XL?

The length of a king single bed is similar to a twin XL, but the width can vary slightly depending on the region. They are similar in purpose but not always interchangeable.

Is king single bed size the same worldwide?

No, bed sizes can vary slightly by country. While the dimensions are generally similar, it’s always best to check local measurements before buying.