How to Make a Twin Bed into a Full

Are you looking to make the most out of your small bedroom space? With a few modifications and just a bit of ingenuity, you can easily convert your twin-sized bed into something that feels larger and more roomy – namely, a full-sized one! 

While it may seem like a complex undertaking with all the measuring, cutting, and assembly involved, rest assured that creating this cozy upgrade is easier than it looks. We’re here to walk you through every step so you can enjoy this comfortable new addition in no time at all. Read on for our tips on how to make a twin bed into a full. Ready to get started? Let’s do it!

How to Make a Twin Bed into a Full

Can a Twin Mattress Fit a Full Bed?

You may be wondering if a twin mattress can fit on a full bed frame. The answer is yes, it certainly can! While there are no fixed measurements for beds, in general, a twin mattress is approximately 39 inches wide and 75 inches long. A full-sized bed frame typically has an inner width of 54 inches, so you will have plenty of space on both sides.

In addition, you don’t have to worry about the mattress sagging or protruding over either side, as the frame will provide excellent extra support and stability. Plus, if you opt for a full-size box spring rather than two twin ones, it can help keep your mattress level and even.

10 Methods How to Make a Twin Bed into a Full

1. Use a Bed Bridge.

A bed bridge is a simple device that can be used to convert a twin bed into a full bed. Bed bridges are placed between the two twin beds and then connected using straps or Velcro. This creates a solid surface that can be used as a full bed. Bed bridges are available for purchase online or at some home goods stores. If you’re feeling creative, you can make your own bed bridge with a few supplies. However, it’s important to make sure the bridge is sturdy enough to support the weight of two people.

2. Add a Mattress Topper.

Adding a Mattress Topper

If you have two twin mattresses, you can make them into a full bed by adding a mattress topper. Mattress toppers are available in a variety of materials, such as memory foam or latex. They can be placed on top of the twin mattresses and then secured using straps or Velcro. 

This will create a single, larger sleeping surface. Try to find a mattress topper that is thick enough to bridge the gap between the two mattresses. However, keep in mind that mattress toppers do not add any additional support.

3. Place the Twin Beds Side by Side.

Another option is to simply place the two twin beds side by side. This will create a larger sleeping surface, but it may not be as comfortable as using a bed bridge or mattress topper. You can secure the beds together using furniture straps or bungee cords. While this method is simple and effective, it may not be the best option if you’re looking for additional support. Make sure the beds are pushed together as tightly as possible to create a flush surface.

4. Use a Bed Frame Extender.

Use a Bed Frame Extender

If you have a metal bed frame, you may be able to use a bed frame extender to convert it into a full-size frame. Bed frame extenders are available for purchase online or at some home goods stores. They attach to the existing bed frame and provide additional support for the mattress. Let your bed frame dictate the size of extender you need. Try to find an extender that matches the color of your bed frame to create a cohesive look.

5. Use Plywood to Make a Platform Bed.

If you want to make your own platform bed, you can do so by using plywood and 2x4s (or other lumber). Cut the plywood to size and then attach it to the 2x4s using screws or nails. 

This will create a sturdy platform that can be used as a full bed. Although this method can be time-consuming and difficult, it is a great way to save money on a full bed. While this method can provide additional support, you may want to consider a bed bridge or mattress topper for additional cushioning.

6. Create a Bed Skirt.

You can also create a bed skirt to hide the fact that your twin beds are side by side. Simply measure the width of your two twin beds and then cut a piece of fabric accordingly. 

Sew it into place and then attach it to the sides of the beds using furniture straps or Velcro. If you want to add a bit of flare, you can also add trim or lace around the edges. Once the bed skirt is in place, no one will be able to tell that your beds were two separate twins.

7. Use an Adjustable Bed Base.

 Adjust the Height of the Bed

If you have a twin bed that is adjustable, you can easily convert it into a full-size bed by adding an adjustable base. Adjustable bed bases are available in various sizes and provide additional support for your mattress. 

They also make it easier to adjust the height of the bed. If you have two adjustable beds, you can also place them side by side to create a full-size bed. Just make sure they are securely fastened to prevent any accidental shifting.

8. Add a Center Support Board.

If you have two twin mattresses, you can make them into a full bed by adding a center support board. This board is placed between the two mattresses and provides additional support for the mattress. 

It also helps to prevent sagging in the middle of the bed. Now you can enjoy the comfort of a full-size bed without having to buy a new one. Make sure to measure the gap between your two twin mattresses before purchasing a center support board.

9. Use an Adjustable Bed Frame Adapter.

An adjustable bed frame adapter is a device that allows you to convert your existing twin beds into full-size beds without needing to buy or build any additional furniture. 

The adapter attaches to the existing bed frames and provides additional stability and support for the mattress. To use the adapter, simply adjust it to fit your bed frames and then secure it into place using the included hardware. Your twin beds will now be able to support the weight of a full-size mattress.

10. Buy a Full-Size Mattress Cover or Pad.

 Full-size Mattress Cover

Finally, if you don’t want to go through the trouble of making your twin beds into full beds, you can simply buy a full-size mattress cover or pad. This will provide additional cushioning and support for the mattress, making it feel more like one large sleeping surface. 

Plus, it’s much easier and less expensive than other methods listed here. However, this method may not be suitable for those who suffer from back pain, as it won’t provide the same support as a full-size bed.

By following any of these tips, you can easily and quickly turn two twin beds into full bed. Plus, it’s much more cost-effective than buying a new mattress or frame. So, start transforming your bedroom today!

You Can Check It Out To Build a Porch Bed Swing

Things to Consider When Making a Twin Bed Into a Full:

1. Measurements:

Before getting started, take a look at the size of your twin bed and determine whether you have enough space for a full conversion. Measure the length of your bed and make sure that it’s long enough to accommodate a full-size mattress, which is typically 54 inches wide by 75 inches long. You may need to purchase an extra long frame if you want the full size look.

2. Type of Bed Frame:

Consider what type of bed frame you would like to use for your conversion. A platform bed frame is ideal since it eliminates the need for a box spring and provides support on both sides of the mattress. Traditional frames also work well but require more assembly time due to their slats and other components.

3. Foundation or Box Spring:

If you’re using a traditional bed frame, then you’ll need either a foundation or box spring to support the mattress. A foundation is a platform that rests directly on the bed frame, while a box spring is an actual bedding accessory with springs and fabric layers. For maximum comfort, choose one of these options that have sufficient support for your full-size mattress.

4. Mattress Size:

When making a twin bed into a full one, you’ll need to choose a full-size mattress. Make sure it’s wide enough to cover the entire surface area of the bed frame, and also look for one with adequate support to reduce back pain. It’s also important to consider your personal preferences when selecting a mattress, such as firmness level, pillow top layer, or cool gel material.


With a little creativity and some elbow grease, you can make a twin bed into a full one. By following the steps on how to make a twin bed into a full one in this blog post, you will be able to create more sleeping space in your home without having to buy new furniture. 

Not to mention, you’ll save yourself some money in the process! So what are you waiting for? Get started today and see how easy it is to turn a twin bed into a full one.

You Can Check It Out To Get Creases Out of Fabric Sofa

Leave a Comment