Combining Single Mattresses: Double Bed Solutions


Ever pondered if two single mattresses can seamlessly unite to form a double bed? This comprehensive guide delves into the practicality, methods, and considerations of merging single mattresses for an expanded sleeping solution. Explore how to bridge the gap between convenience and comfort, ensuring a restful night on your newly configured double bed.

In home furnishings, we are often faced with both space and functionality challenges. A common scenario is that we may have two single mattresses, but need to combine them to accommodate unexpected guests or to improve the sleep configuration of the home. This article takes a closer look at the topic of combining two single mattresses into a double bed, analysing the feasibility, practicalities and considerations involved to help you make an informed decision.

Read on to learn how you can make this transition and ensure the best possible sleep experience.

1. Feasibility analysis

When considering combining two single mattresses, you first need to check the dimensions of the mattresses. A standard single mattress is approximately 90cm wide, while a double mattress is between 135cm and 150cm wide. Therefore, two single mattresses placed directly side by side will have a combined width of 180cm, which exceeds the dimensions of a conventional double bed. Nevertheless, under certain conditions, such as the use of specialised bed frames or mattress connectors, this combination is still possible.

The market also offers solutions specifically designed for combining single mattresses into double beds, such as mattress connectors or customised bed frames, which can help to eliminate gaps between two mattresses and keep them stable.

If you want to know the exact procedure and tools required, continue reading the next section where we will detail how to effectively join two single mattresses into a double bed.


2. Splice method

The key to successfully joining two single mattresses into a double bed is to ensure that they are stable and tightly fitted together. Firstly, lay the two mattresses flat on the double bed frame and make sure their edges are aligned. If there are gaps or height differences between the mattresses, you can use mattress joining straps or padding to fix these issues. Mattress joining straps can be tightened around the outside of both mattresses to minimise movement between them.

Alternatively, if the two mattresses are of different heights or firmnesses, consider placing a thickened mattress padding on top. Not only will this provide a more uniform and comfortable sleeping surface, but it will also help eliminate any gaps in between.

By doing this, you can achieve a seamless combination of two single mattresses, creating a sleeping space that is both large and comfortable.

Next, we'll explore the key factors to consider when making this splice. Read on to find out how to avoid common problems and ensure the best possible sleeping experience.

3. Key considerations

When combining two single mattresses into a double bed, there are some key factors to keep in mind in addition to the size and splicing method that must be considered.

3.1 Gaps and unevenness

The gap between two mattresses can be one of the biggest challenges. Not only does this gap affect the quality of sleep, but it can also lead to discomfort or even injury during sleep. To address this issue, specialised mattress connectors or filler pads can be used, which effectively bridge the gap between two mattresses to create a continuous sleeping surface.

In addition, if the two mattresses differ in height or firmness, this can lead to an uneven sleeping surface and affect the quality of sleep. In this case, it is very important to choose two mattresses with the same firmness and height. If you have already purchased different mattresses, consider adding a thick top layer or mattress topper for a more even and comfortable sleeping experience.

By carefully considering these factors and acting accordingly, you can ensure that using two single mattresses together is both comfortable and practical.

Below we will discuss in depth the effect and experience of putting together a single mattress to provide you with more comprehensive guidance and advice.

4. Splice effect and experience

Although it is possible in practice to splice two single mattresses together to form a double bed, its effect on the sleep experience is worth exploring in depth. The user experience can be considered in several ways:

4.1 Comfort and continuity

The effectiveness of splicing has a direct impact on sleep comfort. Using the proper joining methods and materials ensures that the transition between two mattresses is smooth and seamless, thus providing a continuous sleep surface. If handled properly, the user may not even feel the dividing line between the two mattresses.

4.2 Sleep Quality

Sleep quality is another important indicator of the effectiveness of a spliced mattress. One needs to make sure that the spliced mattress will not cause sleep disruption due to movement or gaps. In addition, choosing a mattress firmness and material that suits your preference is crucial to improving sleep quality.

4.3 Long-term use considerations

From a long-term use perspective, the durability and maintenance of a patchwork mattress needs to be considered. The lifespan of a mattress may be compromised by the splices, and regular checking and adjusting of the splices can help prolong their life.

By analysing these aspects in depth, we can better understand the effects of using single mattresses in combination and make more appropriate decisions.

Next, we'll explore the economics and practicalities of using single mattresses in combination to help you fully evaluate the value of this option.


5. Economy and Practicality Analysis

Economy and practicality are two factors that should not be overlooked when considering the decision-making process of combining two single mattresses into a double bed.

5.1 Cost-benefit comparison

From an economic point of view, if you already own two single mattresses, then combining them is definitely a more cost-efficient option, and can result in considerable savings compared to purchasing a brand new double mattress. However, this cost advantage may diminish if you take into account the purchase of additional connecting fittings or padding. It is therefore important to carry out a detailed comparative cost analysis.

5.2 Long-term use considerations

In terms of practicality, the viability of using two single mattresses over the long term also needs to be considered. While it may seem like a convenient solution in the short term, the impact of this configuration on the durability of the mattresses needs to be evaluated in the long term. Additionally, depending on frequency of use and maintenance, the two mattresses may not show the same level of wear and tear, which could create the need for replacement or upgrades in the future. 

Taking cost and practicality into account, you can more accurately determine if combining two single mattresses is a solution that meets your long-term needs and budget.

The next section will explore mattress size and fit comparisons in more detail to help you better understand the space requirements and comfort implications of different configurations.

6. Size and Fit Comparison

Understanding different mattress sizes and their fit is critical when considering combining two single mattresses.

6.1 Size differences between single and double mattresses

Typically, a single mattress is approximately 90cm wide, whereas a standard double mattress is between 135cm and 150cm wide. As a result, the total width of a combination of two single mattresses will be 180cm, which may exceed the width of a standard double bed frame. This must be taken into account when choosing a bed frame to ensure that the mattresses will fit perfectly.

6.2 Adaptability of bed type for domestic use

In addition to size, the choice of bed type can also affect how efficiently the space is used and how family members experience sleep. For example, two single mattresses may offer more configuration options for families who need flexibility in the use of space. And for those seeking optimal sleep comfort, a large double mattress may be a better choice.

With these factors in mind, you'll need to make the most appropriate mattress and bed frame choices based on your individual space conditions and sleep preferences.

Next, we'll explore the mattress options on the market and how to choose the best single mattress for combined use to ensure your sleeping environment is both comfortable and functional.

7. Market options and recommendations

Choosing the right single mattress for a combination is key to achieving the ideal sleeping space for two. There is a wide range of mattresses on the market, from traditional sprung mattresses to memory foam or hybrid mattresses, the options are seemingly endless. However, not all mattresses are suitable for combination use, so it becomes vital to understand how to pick the right one.

7.1 Characteristics of mattresses suitable for combined use

  • Consistency: Choosing a mattress with consistent firmness and height will ensure a flat and seamless sleeping surface when combined.
  • Quality: A high-quality mattress not only provides better support and comfort, but is also more suitable for long-term use.

7.2 Brand and model selection

There are a number of brands on the market that specialise in single mattresses that can be used in combination, and these are often designed with the need for stability around the edges and a seamless connection in the middle in mind. Conducting comparative research on brands and models, reading user reviews and expert recommendations can help you make an informed choice.

Choosing the right mattress will not only enhance the quality of your sleep, but will also ensure that you get value for your investment. Consider your individual needs and budget to choose the best single mattress for your needs for the best combination of results.

At this point, we have explored in detail the various aspects of combining two single mattresses into a double bed. The next section, the conclusion, will summarise the key findings of this article and provide some practical advice to help you make the best mattress selection and combination decision.



Combining two single mattresses into a double bed is both a practical and flexible solution, particularly suited to homes that require flexible space utilisation or have unique sleeping needs. Through the in-depth discussion in this paper, we have learnt that while this approach offers some advantages in terms of feasibility and practicality, it also comes with challenges in terms of size matching, comfort maintenance and long-term durability.

It is important to consider an individual's specific needs, spatial conditions and budget when deciding whether to adopt this combination of options. Choosing a high quality, consistent mattress and utilising the appropriate connecting accessories will maximise the comfort and longevity of the combination mattress.

Finally, we recommend conducting thorough market research before making a purchasing decision, considering different brands and models of mattresses and their combined suitability. A combination of professional buying guides and feedback from actual users can help you make an informed choice, ensuring that your sleep space is both comfortable and functional.

With careful planning and selection, combining two single mattresses into a double bed can not only solve a practical need, but also bring unexpected improvements to your sleep experience. We hope this guide has provided you with valuable insights and advice to help you create the ideal sleeping environment.


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Q1: Will two single mattresses make a double?
A1: Two single mattresses combined are typically wider than a standard double mattress. While a double mattress is usually 135 to 150 cm wide, two single mattresses, each about 90 cm wide, will total around 180 cm in width.

Q2: How do you keep two single mattresses together?
A2: To keep two single mattresses together, you can use a bed bridge or mattress connector strap. These tools help eliminate the gap and secure the mattresses in place, creating a more unified sleep surface.

Q3: Is it OK to put two mattresses together?
A3: Yes, it's perfectly fine to put two mattresses together, especially if you need a larger bed temporarily or have specific sleeping preferences. However, ensuring the mattresses are of similar height and firmness can improve comfort.

Q4: Do 2 singles make a king?
A4: Two single mattresses side by side will be larger than a standard UK king-sized bed. King-sized beds are typically 150 to 160 cm wide, whereas two singles will combine to be around 180 cm wide.

Q5: Can you put 2 single mattresses on a king bed?
A5: Yes, you can put two single mattresses on a king bed frame; however, they will likely be a bit narrower than the king bed's width, as they total around 180 cm wide compared to the king's usual 150 to 160 cm width.

Q6: Does 2 single beds make a queen?
A6: Two single beds combined will exceed the width of a standard queen bed, which is around 120 cm wide in the UK. The total width of two single beds would be approximately 180 cm.

Q7: Is 2 single beds bigger than 1 double bed?
A7: Yes, two single beds put together are wider than a standard double bed. While a double bed is typically around 135 to 150 cm wide, two singles together are about 180 cm wide.

Q8: Are 2 double beds the same size as a king?
A8: No, two double beds side by side would be much wider than a standard king bed. A king bed is usually around 150 to 160 cm wide, whereas two double beds would total nearly 270 to 300 cm in width.

Q9: What two beds equal a queen?
A9: In terms of width, no two smaller beds put together would exactly equal the width of a standard UK queen-sized bed. However, two small singles (around 75 cm each in width) would come close but still be larger at 150 cm total width.

Q10: If I have different firmness preferences from my partner, is combining two single mattresses a good solution?
A10: Yes, combining two single mattresses can be an excellent solution for partners with different firmness preferences. Each person can choose a mattress that suits their comfort level, and the two mattresses can be joined to create a larger bed.

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