Mattress Sizes Chart for US, UK, EU, RV, Trucks
Author: Ian C. Langtree - Writer/Editor for Disabled World (DW)
Published: 2 Sep 2022 - Updated: 29 Aug 2026
Publication Type: Instructive / Helpful
Table of Contents:
Synopsis - Definition - Overview - FAQs - Insights, Updates - Related Content
Synopsis
This article provides a comprehensive guide to mattress dimensions, detailing standard sizes, measurements, and variations across regions. It serves as a practical resource for individuals seeking clear, accessible information to make informed decisions about bedding. The content is particularly valuable for those with disabilities, seniors, or individuals requiring adaptive sleep solutions, as it highlights how mattress dimensions impact accessibility, space management, and comfort. By outlining size options - from twin to specialty widths - it aids in selecting mattresses that accommodate mobility aids, medical equipment, or caregiver assistance needs. The inclusion of international sizing comparisons further enhances its utility for diverse living situations, making it a helpful reference for optimizing sleep environments tailored to specific physical requirements.
At a Glance
- 1 - A California King is 4 inches longer but 4 inches narrower than a standard King. It suits taller sleepers whose feet hang off a regular King.
- 2 - A Full mattress is also called a standard Double and measures 54 inches wide. It gives single sleepers room to sprawl and lets two people share a compact space.
- 3 - Mattress names do not translate between countries, so a UK King and an EU King differ in inches and centimeters. Checking the actual measurements is the reliable way to confirm a fit.
- 4 - The Olympic Queen is 6 inches wider than a standard Queen and requires its own dedicated frame measuring 66 by 80 inches. Because it is nonstandard, compatible frames and bedding can be difficult to find.
Topic Definition
- Mattress Sizes
Mattress sizes are the standardized width, length, and depth measurements used to categorize beds so that frames, box springs, and bedding fit together correctly. These dimensions vary by region, with the United States and Canada using names like Twin, Full, Queen, and King, while the United Kingdom and European Union follow their own metric standards, and specialty categories exist for recreational vehicles and trucks. Knowing the exact measurements of each size helps you match a mattress to your body, your sleeping habits, and the space available in a room, and it is especially useful when accommodating mobility aids, medical equipment, or a caregiver. Because a size labeled "King" or "Double" can differ from one country to the next, checking the actual inches or centimeters is the reliable way to confirm the right fit.
Overview
Mattress Sizes Explained: A Regional Guide to Dimensions for Homes, RVs, and Trucks
Buying a new mattress is not a one-size-fits-all situation; evaluating your individual needs is essential. If you have a history of back pain or sleep conditions, you must select the right mattress size and be sure you will be comfortable with your new mattress.
Measuring the Size of a Mattress
To determine the dimensions of a mattress, measure it from head to foot for the length and from side to side for the width. It may be helpful to measure the depth of the mattress as well, from the bottom where it rests on the box spring to the top. Depth becomes important if you have a larger or smaller mattress than normal. That's because standard bedding is sewn to accommodate a standard mattress depth (no more than 9 inches). Use a tape measure to determine the size of your mattress and box spring.
- Measuring the Width: Measure the width of the mattress from side to side. Repeat for box spring if necessary.
- Measuring the Length: Measure the length from the head of the mattress to the foot of the mattress. Repeat for box spring if necessary.
- Measuring the Height (Depth): Measure from the bottom, where it rests on the box spring, to the top of the mattress, including any pillow top. Repeat for box spring if necessary.
U.S. and Canada Mattress Sizes Chart
| Mattress | Inches and Centimeters |
|---|---|
| Crib | 27.25" Wide x 51" Length - (69.2cm Wide x 129.5cm Length) |
|
Baby Crib mattress size dimensions are widely accepted to be the standard across the U.S., so that this bed size will fit any standard crib. A crib-size mattress should not be more than 6 inches thick. For safety reasons, crib mattresses are firmer than adult mattresses. |
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| Small Single | 30" Wide x 75" Length - (76.2cm Wide x 190.5cm Length) |
|
Suitable for babies who have outgrown their crib (cot) or toddlers, the Small Single size mattress is among the smallest mattress available. |
|
| Twin | 38" Wide x 75" Length - (96.5cm Wide x 188.0cm Length) |
|
A Twin size mattress is the smallest of adult-size mattresses. A Twin size mattress would be suitable for a child who has outgrown the toddler bed, a single adult, or those with small bedrooms. A twin mattress is commonly used for daybeds, bunk beds, dorm rooms, or small guest bedrooms. |
|
| Twin XL | 38" Wide x 80" Length - (96.5cm Wide x 203.5cm Length) |
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Twin XL beds are 38" x 80", giving you an additional 5" in length that the twin size allows you to stretch out your legs and are ideal for the single taller person. Two Twin XL mattresses make up the dimensions of one King size mattress and fit in a King size bed frame allowing sleepers to separately sit up or lie back without disrupting their partner. |
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| Full | 54" Wide x 75" Length - (134.5cm Wide x 190.5cm Length) |
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A Full-size mattress may also be referred to as a "standard double." Full-size mattresses provide a good compromise between twin and queen-size mattresses for single active sleepers who like to sprawl out or couples with small bedrooms. Two people can sleep comfortably but compactly on a full or double. A full bed size offers a good amount of space for single sleepers and is a good bed size option for a guest bedroom. |
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| Full xL | 54" Wide x 80" Length - (137cm Wide x 203.5cm Length) |
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The full xL size mattress is 5 inches longer than a standard full mattress. The extra length provides greater legroom making it a great fit for taller single sleepers. |
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| Queen Size | 60" Wide x 80" Length - (152cm Wide x 203.5cm Length) |
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A queen-size mattress is great for couples who do not need too much space for sleeping or for a single adult who prefers extra space to sprawl out. This is a trendy mattress size in the U.S and is a comfortable fit for single active sleepers, couples, and those who share a bed with children or pets. |
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| Olympic Queen Size | 66" Wide x 80" Length - (167cm Wide x 203.5cm Length) |
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The Olympic queen size is six inches wider than the popular queen-size mattress. A traditional King or Queen size frame will not fit a traditional King or Queen size frame. You will need an Olympic Queen bed frame that measures 66" wide and 80" long. These are the better option for those who don't need something super large but something big enough for a couple to sleep comfortably. However, as the Olympic queen-size bed isn't standard, few mattress manufacturers have this size and finding compatible bed frames and bedding accessories may be challenging. |
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| King Size | 76" Wide x 80" Length - (193cm Wide x 203.5cm Length) |
|
Offering a luxurious amount of space, king mattress sizes provide the equivalent of a twin xl mattress size to themselves. King-size mattresses are wider but shorter than California king-size mattresses. The king size also has a split option (see next mattress down). These are two Twin XL mattresses placed side-by-side. This style is also a good fit for adjustable beds with split-side functionality. |
|
| Split King (Per mattress) |
38" Wide x 80" Length - (80cm Wide x 203.5cm Length) |
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A Split King size mattress uses two identical Twin XL-sized mattresses equal to the size of a complete King size mattress. The split mattress allows sleepers to have a mattress that is individually right for them. |
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| California King Size | 72" Wide x 84" Length - (183cm Wide x 213.5cm Length) |
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A California king is sometimes known as the extra-long king when it comes to California king vs. king beds. California king-size mattresses have four inches less width than a conventional king-size bed and are 4 inches longer in overall length. If your feet hang off the edge of a mattress, a California king-size mattress will provide you with the length you need. |
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| Wyoming King Size | 84" Wide x 84" Length - (213.5cm Wide x 213.5cm Length) |
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A Wyoming king bed is 8 inches wider and 4 inches longer than a standard king-size bed, which measures 76 inches by 80 inches. It's a good option for families who feel cramped in large-sized beds. If you have to accommodate more sleepers, a Wyoming king may be a better fit than a Texas king-size bed. |
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| Texas King Size | 80" Wide x 96" Length - (203.5cm Wide x 244cm Length) |
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The Texas king bed mattress is perfect for individuals who need that extra leg room. Measuring 80 inches by 96 inches, the Texas king bed is narrower than the Wyoming king. However, it compensates for this loss by being 14 inches long. |
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| Alaskan King Size | 108" Wide x 108" Length - (274cm Wide x 274cm Length) |
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One notable feature of the Alaskan king is its larger size and unique shape - it's big, square - with dimensions at a whopping nine feet long by nine feet wide, space will always be abundant. An Alaskan King is much bigger than a California King, measuring 24 inches long and 36 inches wider. |
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| NOTE: In some countries, the above measurements will not apply (See below charts). | |
EU Mattress Size Chart
| EU Mattress | Dimensions |
|---|---|
| EU - Single/Twin | 36" Width x 78" Length - (90cm Width x 200cm Length) |
| EU - Single Extra Long | 36" Width x 82" Length - (90cm Width x 210cm Length) |
| EU - Small Double | 48" Width x 78" Length - (120cm Width x 200cm Length) |
| EU - Double | 54" Width x 78" Length - (140cm Width x 200cm Length) |
| EU - King | 63" Width x 79" Length - (160cm Width x 200cm Length) |
| EU - Grand King | 71" Width x 79" Length - (180cm Width x 200cm Length) |
UK Mattress Size Chart
| UK Mattress | Dimensions |
|---|---|
| UK Small Single mattress | 30" Width x 75" Length - (75cm Width x 190cm Length) |
| UK Single mattress | 36" Width x 75" Length - (90cm Width x 190cm Length) |
| UK Small Double (Queen) mattress | 48" Width x 75" Length - (120cm Width x 190cm Length) |
| UK Double mattress | 54" Width x 75" Length - (135cm Width x 190cm Length) |
| UK - King | 60" Width x 78" Length - (152cm Width x 198cm Length) |
| UK - Queen or Super King | 72" Width x 78" Length - (183cm Width x 198cm Length) |
| UK Large Emperor mattress | 84" Width x 84" Length - (213cm Width x 213cm Length) |
| UK Caesar mattress | 96" Width x 87" Length - (245cm Width x 220cm Length) |
Recreational Vehicle (RV) Mattress Size Chart
| RV Mattresses | Dimensions |
|---|---|
| RV Bunk | 35" Wide x 79" Length - (88cm Width x 200cm Length) 34" Wide x 75" Length - (86cm Width x 190cm Length) 32" Wide x 75" Length - (81cm Width x 190cm Length) 30" Wide x 80" Length - (76cm Width x 203cm Length) 30" Wide x 75" Length - (76cm Width x 190cm Length) 30" Wide x 72" Length - (76cm Width x 183cm Length) 28" Wide x 75" Length - (71cm Width x 190cm Length) 28" Wide x 72" Length - (71cm Width x 183cm Length) |
| RV Twin | 42" Wide x 80" Length - (106cm Width x 203cm Length) 40" Wide x 80" Length - (101cm Width x 203cm Length) 39" Wide x 75" Length - (99cm Width x 190cm Length) 38" Wide x 80" Length - (96cm Width x 203cm Length) 38" Wide x 75" Length - (96cm Width x 190cm Length) |
| RV Three Quarter | 48" Wide x 80" Length - (122cm Width x 203cm Length) 48" Wide x 75" Length - (122cm Width x 190cm Length) 48" Wide x 72" Length - (122cm Width x 183cm Length) |
| RV Full | 55" Wide x 75" Length - (140cm Width x 190cm Length) 54" Wide x 75" Length - (137cm Width x 190cm Length) 53" Wide x 75" Length - (134cm Width x 190cm Length) |
| RV Short Queen | 60" Wide x 75" Length - (152cm Width x 190cm Length) 60" Wide x 74" Length - (152cm Width x 188cm Length) |
| RV Queen | 60" Wide x 80" Length - (152cm Width x 203cm Length) |
| RV Olympic Queen | 66" Wide x 80" Length - (167cm Width x 203cm Length) |
| RV King | 76" Wide x 80" Length - (193cm Width x 203cm Length) 72" Wide x 80" Length - (183cm Width x 203cm Length) 72" Wide x 75" Length - (183cm Width x 190cm Length) |
| RV California King | 72" Wide x 84" Length - (183cm Width x 213cm Length) |
Truck Mattresses: Common Sizes
| Truck Mattresses |
|---|
|
42" Wide x 80" Length - (107cm Width x 203cm Length) |
Frequently Asked Questions
How often should a mattress be replaced
Most mattresses last between 7 and 10 years, though the exact lifespan depends on the material, build quality, and how much wear it gets, so signs like sagging or lost support are good indicators it is time for a new one.
What is the difference between a mattress and a box spring
A mattress is the padded surface you sleep on, while a box spring is a supportive base placed underneath it that absorbs shock, adds height, and helps the mattress last longer.
Can I put any mattress size on an adjustable base
Not every size works on an adjustable base, but Twin XL, Queen, and Split King mattresses are common choices because they bend with the frame, and Split King is popular since each side can move independently.
What mattress size is best for a small bedroom
Twin, Twin XL, and Full sizes tend to work best in small bedrooms because they leave more floor space for movement, which is helpful when a room also needs to fit mobility aids or medical equipment.
Do mattress sizes affect the price
Yes, larger mattresses generally cost more because they use more materials, and specialty or oversized options like the Wyoming King or Alaskan King are usually the most expensive due to limited availability.
Why do RV and truck mattresses come in so many sizes
Recreational vehicles and trucks have limited and irregular sleeping spaces, so their mattresses come in many nonstandard widths and lengths to fit specific cab and cabin layouts.
How do I know if a mattress will fit through my doorway
Measure the width and height of your doorways, hallways, and stairwells before buying, and consider a mattress that ships compressed in a box if access is tight.
What firmness level is best for people with back pain
Many people with back pain do well with a medium firm mattress because it supports spinal alignment while cushioning pressure points, though the ideal firmness varies by body weight and sleeping position.
Insights, Analysis, and Developments
Editorial Note: Choosing the right mattress size is more than a matter of comfort; it can directly influence independence, safety, and quality of life, especially for those with mobility challenges or specialized needs. This article's thorough approach to international and specialty mattress dimensions helps demystify the process, ensuring that everyone-from families to caregivers to individuals with disabilities-can find a solution that fits both their space and their lifestyle.
Author Credentials: Ian is the founder and Editor-in-Chief of Disabled World, a leading resource for news and information on disability issues. With a global perspective shaped by years of travel and lived experience, Ian is a committed proponent of the Social Model of Disability, a transformative framework developed by disabled activists in the 1970s that emphasizes dismantling societal barriers rather than focusing solely on individual impairments. His work reflects a deep commitment to disability rights, accessibility, and social inclusion. To learn more about Ian's background, expertise, and accomplishments, visit his full biography.