img img
Stay In Touch

Lucky Mag is supported by our readers. When you buy through links on our site, we may earn a commission. Learn more.

Adjustable Bed Sizes and Dimensions: How to Choose the Perfect Bed Size For You

By: Christina Davies
Updated on: April 05, 2024

  • Adjustable beds come in various sizes, and choosing the right size is crucial for your comfort and sleep quality.
  • Standard adjustable bed sizes include twin, twin XL, full, queen, king, and California king, each with specific dimensions.
  • Consider who will be using the bed, your room size, your body size, your sleep position, and your budget when selecting a mattress size.
  • Specialized mattress sizes are available for unique needs or preferences, such as small single, super single, full XL, RV queen, Olympic queen, RV king, Texas king, Wyoming king, and Alaskan king.
  • Ensure your bedding complements your mattress size, considering factors like breathability, comfort, hypoallergenic properties, quality, and weight.
  • Adjustable beds offer health benefits by allowing you to find your ideal sleeping position, which can reduce back and joint pain, improve circulation, and alleviate snoring or sleep apnea symptoms.

Adjustable beds have revolutionized sleep technology, allowing individuals to find their ideal sleeping position and experience many health benefits. Whether you suffer from back pain or poor circulation or want to enhance your sleep experience, an adjustable bed can significantly improve your overall well-being. This comprehensive guide will explore the various available adjustable bed sizes and dimensions, ensuring you find the best fit for your needs and preferences. So, let’s dive in and find the perfect adjustable bed frame size for you!

Understanding Adjustable Bed Sizes

When it comes to adjustable beds, most models adhere to standard mattress sizes. This means that the dimensions of an adjustable bed base will typically match those of a stationary mattress base, with only slight variations in length or width. However, it’s important to note that not all adjustable beds are available in every size. Let’s take a closer look at the popular adjustable bed sizes and their corresponding dimensions:

Twin Adjustable Beds

A twin-size adjustable bed is ideal for single sleepers or those with limited space. A twin adjustable bed, measuring 38 by 75 inches, is small and can fit well in tight spaces like college dorms, kids’ rooms, or studio apartments.

Twin XL Adjustable Bed

A twin XL adjustable bed for taller individuals provides extra length, measuring 38 by 80 inches. This additional five inches in length makes sure that even if you’re over six feet tall, your feet won’t dangle off the bed, giving taller individuals added comfort during their sleep.

Full Adjustable Bed

Also known as an old mattress or a double bed, a full-size adjustable bed measures 54 inches wide by 75 inches long. While the full size can accommodate couples, it may not offer enough space for the average couple. It is better suited for single adults wanting extra room to move around during sleep.

Queen Adjustable Bed

The queen-size mattress is the most popular mattress size and is often paired in massive master bedrooms with an adjustable bed. Measuring 60 by 80 inches, a queen adjustable bed can comfortably accommodate couples while fitting into smaller master bedrooms or guest rooms. It provides ample space for most couples and is long enough to accommodate sleepers of varying heights.

King Adjustable Bed

A king-size adjustable bed is the perfect choice for couples who prefer ample space and like to spread out. With dimensions of 76 by 80 inches, the king-size mattress offers a full 16 inches of additional width compared to a queen-size bed. This extra width provides more sleeping surface area and is the best option for couples who desire maximum comfort and freedom of movement.

California King Adjustable Bed

Designed for tall sleepers and those with expansive master bedrooms, the California king-size adjustable bed offers generous dimensions of 72 by 84 inches. This bed is ideal for individuals over six feet tall and provides a luxurious look and feel for those with oversized bedrooms.

Split King Adjustable Bed

The split adjustable bed is a popular choice for couples who opt for an adjustable bed. It offers the same dimensions as a standard king-size bed but comprises two twin XL mattresses. This configuration allows couples to customize their sleeping experience by selecting different adjustable base angles, firmness levels, and even mattress materials. The split king adjustable bed is perfect for couples with differing sleep preferences who still want to share a bed.

Why Does Adjustable Bed Frame Size Matter?

The size of your adjustable bed frame matters for three important reasons: mattress fit, room fit, and personal comfort.

Firstly, it’s crucial to match the size of your adjustable bed frame with your mattress. If you have a twin-size mattress, pick a twin-size adjustable base. This ensures your mattress fits well and prevents any discomfort or damage.

Secondly, the bed frame size impacts how well your bedroom space is used. Larger bed frames, like king or queen sizes, need more floor space. If your room is small, they can make it feel cramped and limit your movement.

Lastly, the size of your adjustable bed base affects your personal comfort. Choosing the right size ensures you have enough room to stretch comfortably. A bed that’s too small might restrict your movements and make it harder to find a comfortable sleeping position.

Factors to Consider When Selecting a Mattress Size

luxurious adjustable beds, adjustable bed models Adjustable Bed Sizes and Dimensions of twin bed, adjustable bed frames of warranty adjustable bed warranties

Now that you are familiar with the different mattress sizes, let’s explore the key factors to consider when selecting the best bed size for you:

Who Will Sleep in the Bed?

The first consideration is who will be sharing the bed with you. A smaller mattress, like a twin or twin XL, may be sufficient if you sleep alone or have limited space. These sizes are also ideal for children’s rooms or guest bedrooms.

However, if you are sharing the bed with a partner, you may opt for a larger size like a queen, king, or California king mattress to ensure enough space for both of you to sleep comfortably. Additionally, if you have children or pets who often join you in bed, a larger size will provide the necessary room for everyone.

Your Room Size

The size of your bedroom is another vital factor to consider. Measure your room and take note of any other furniture or fixtures that will be present. You’ll want to ensure that the mattress you choose fits well in the space without cramming the room. A twin, twin XL, or full-size mattress might be the best option if you have a smaller bedroom. A queen, king, or California king for larger bedrooms will provide a more spacious and luxurious feel.

To give you a better idea of the space required for each mattress’s weight and size, here’s a comparison of their dimensions in square inches and square feet:

Mattress SizeDimensions (Square Inches)Dimensions (Square Feet)
Twin2,925 sq. in.20.3 sq. ft.
Twin XL3,120 sq. in.21.7 sq. ft.
Full4,050 sq. in.28.1 sq. ft.
Queen4,800 sq. in.33.3 sq. ft.
King6,080 sq. in.42.2 sq. ft.
California King6,048 sq. in.42.0 sq. ft.

Use these measurements as a guide to determine which mattress size will fit comfortably under bed lighting in your bedroom.

Your Body Size

Consider your body size when choosing a mattress. If you are taller than average, you’ll want a mattress that provides enough length to accommodate your height. A twin XL, full, queen, or king-size mattress will suit individuals up to 6 feet 7 inches tall.

If you are taller than 7 feet, a California king or specialty mattress size may be necessary to ensure a comfortable sleep experience. A full, queen, or king-size mattress will provide the necessary room if you prefer extra space to move around while sleeping.

Your Sleep Position

Your favorite sleeping position is something to think about when picking the right mattress size. If you tend to move around a lot while sleeping or sleep with a partner, a larger mattress will allow for more freedom of movement without disturbing your sleep partner.

Side sleepers may also prefer a larger mattress to accommodate their upper or lower body parts’ natural position. On the other hand, if you prefer to sleep in a more confined space or have limited space in your bedroom, a smaller mattress may be sufficient.

Your Budget

Your budget is a key factor in deciding the right mattress size for you. Generally, larger mattress sizes come with a higher price tag. A king-size mattress will cost more than a queen, and a queen will cost more than a full-size mattress. Consider your budget and prioritize your needs to find the best balance between size and affordability. Keep in mind that the price of a mattress can be influenced by factors such as materials used and the purchasing method (online vs. brick-and-mortar stores).

Check Bed Warranty

Don’t forget about the warranty from the manufacturer. Adjustable bed warranties can last a long time, usually 10–20 years or more. The longer warranty reflects the higher cost of investing in an adjustable bed frame. Look for reliable warranties that cover various defects, as this shows the retailer’s confidence in their products.

Consider Your Health

Adjustable beds can provide relief if you have health issues like sleep apnea, snoring, acid reflux, poor blood circulation, back pain, or joint pain. Some of the best adjustable beds even have massage features to help with pressure relief and improve your sleep comfort.

Remember that an adjustable bed’s effectiveness can vary depending on your individual needs and conditions.

Additional Information: Specialty Sizes

In addition to the standard mattress sizes, several specialty sizes are available for those with specific needs or preferences. Let’s explore some of these lesser-known mattress sizes:

  • Small Single: This pint-sized bed measures 30 x 75 inches and is narrower than a twin-size bed. It is ideal for young children or individuals looking to save space in a smaller room.
  • Super Single: The super single mattress measures 48 x 84 inches, providing extra length compared to a full-size bed. It is suitable for taller individuals who need more legroom.
  • Full XL: The full XL mattress offers the same width as a standard full but provides an additional 5 inches in length, measuring 53 x 80 inches. It is perfect for taller sleepers who want extra legroom.
  • RV Queen: The RV queen mattress is designed specifically for recreational vehicles and measures 60 x 75 inches. It is slightly narrower than a standard queen, making it a suitable replacement for most RV mattresses.
  • Olympic Queen: The Olympic queen mattress is wider than a standard queen, measuring 66 x 80 inches. It is a great option for couples who want more space but have limited room for a king-size mattress.
  • RV King: Similar to the RV queen, the RV king mattress is designed for recreational vehicles and measures 72 x 80 inches. It suits those looking to replace an RV mattress with a larger size.
  • Texas King: The Texas King mattress is a true representation of everything being bigger in Texas. It measures 80 x 98 inches, offering ample space for large families or individuals who enjoy sprawling in bed.
  • Wyoming King: The Wyoming King mattress measures 84 x 84 inches, making it a perfect square. It offers a luxurious and comfortable sleep experience, especially in larger bedrooms.
  • Alaskan King: The Alaskan King mattress is one of the largest available mattress sizes, measuring 144 x 84 inches. It is perfect for those who prioritize space and have a large master bedroom.

These specialty sizes cater to specific needs and can be a great option for those looking for a unique sleeping experience.

Finding the Right Bedding for Your Mattress

Once you have chosen the perfect mattress size, it’s time to find the right bedding to complement it. Bedding includes sheets, a bedspread (comforter, quilt, or duvet), pillows, pillow covers, extra blankets, a mattress cover, and a bed skirt. Here are some tips to help you find the ideal bedding for your mattress:

  • Breathability: Consider the climate and weather conditions in your area. If you live in a warmer environment or tend to sleep hot, opt for breathable bedding materials like Hyperlite sheets to ensure a cool and comfortable sleep.
  • Comfort: Look for sheets with a thread count ranging from 200 to 400 for a soft and luxurious feel. Remember, a higher thread count doesn’t always guarantee better quality or comfort. Find the right balance for your preferences.
  • Hypoallergenic: If you have allergies or sensitivities to specific materials, choose bedding that’s hypoallergenic. For example, a duvet filled with alternative stuffing like polyester can be suitable for those with allergies.
  • Quality: When selecting bedding, consider the material, filling, and weight. High-quality materials and fillings, such as down or alternative down, can enhance comfort and durability. Also, consider the weight of the bedding to ensure it suits your climate and personal preferences.

Finding the right bedding is essential to complete your sleep experience and create a cozy and inviting bedroom atmosphere. Take your time to explore different options and choose bedding that matches your style and comfort needs.

FAQs about Adjustable Bed Sizes and Dimensions

What Sizes Do Adjustable Beds Come In?

Adjustable beds are available in many sizes, including  twin , full, queen,  King and California King. A popular option is a split king, where two queen beds and each partner gets a twin XL adjustable base and mattress for individual comfort preferences.

Can I Use My Existing Bed Frame?

It depends on the adjustable bed model. Some can fit inside your existing bed frame by removing the rails or attaching the headboard and footboard. However, some adjustable beds can only stand on bed frames alone, especially if they have additional features like attachable headboards.

How Do I Know the Weight Capacity?

Check the label of your adjustable base for its maximum weight capacity. – Most adjustable beds can support heavy foam mattresses and multiple sleepers, but it’s crucial to confirm the specific capacity of your base.

Do I Need Box Springs?

You should never use box springs or mattress foundations on an otherwise adjustable bed frame. These are rigid and not designed to move with an adjustable base, which could lead to damage.

Are Adjustable Bases Beneficial for Health?

Yes, adjustable bases offer health benefits. They can help reduce back and joint pain by letting you sleep in a zero-gravity position that takes pressure off your spine and joints. Elevating the head and feet can improve circulation and reduce snoring and sleep apnea symptoms by lowering blood pressure and preventing throat tissues from blocking airflow.


Choosing the right mattress size is vital for a comfortable and restful sleep. Consider factors such as who will be sharing the bed, the size of your room, your body size, your sleep position, and your budget when deciding. Whether you opt for a standard size like twin, queen, or king or prefer a specialty size to accommodate specific needs, finding the perfect mattress will enhance your sleep quality and overall well-being. Don’t forget to pair your mattress with suitable bedding to create a cozy and inviting sleep environment. Sweet dreams await!

Remember, your mattress size should align with your personal preferences, space availability, bed frame, and individual needs. Take the time to explore different options and consider the factors mentioned in this guide. By doing so, you’ll be well on your way to finding the perfect bed size for your sleep oasis. Happy mattress shopping!


Feeling Lucky?

Sign up for updates and
exclusive deals.