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King Mattress Size: 76" x 80"
Mattress Sizes Guidance
BedStory mattress size guidance helps you understand the differences between bed sizes and find the best fit.
Cal King Mattress Size: 72" x 84"
Queen Mattress Size: 60" x 80"
Full Mattress Size: 54" x 75"
Twin XL Mattress Size: 38" x 80"
Twin Mattress Size: 38" x 75"
Mattress Sizes and Dimensions Chart
Understanding which mattress is best for you
| Mattress Size | Size (in.) | Size (ft.) | Size (cm) | Best For | Ideal Room Size |
|---|---|---|---|---|---|
| King | 76" x 80" | 6.33' x 6.67' | 193.04 x 203.2 | Couples with kids/pets | 12' x 12' |
| California King | 72" x 84" | 6' x 7' | 182.88 x 213.36 | Tall people who want extra legroom | 11' x 13' |
| Queen | 60" x 80" | 5' x 6.67' | 152.4 x 203.2 | Couples (2 persons) | 10' x 10' |
| Full | 54" x 75" | 4.5' x 6.25' | 137.16 x 190.5 | Single adults, Teenagers | 9' x 9.5' |
| Twin XL | 38" x 80" | 3.25' x 6.67' | 99.06 x 203.2 | College dorm rooms, growing kids | 8' x 10' |
| Twin | 38" x 75" | 3.25' x 6.67' | 99.06 x 190.5 | Kids, bunk beds, small bedrooms, dorms | 7' x 9.5' |
Room sizes are guidelines — allow at least 2-3 feet around the bed for walking space (nightstands,
dressers).
Width x Length format applies to all dimensions. Actual mattress dimensions may vary slightly by brand.
Width x Length format applies to all dimensions. Actual mattress dimensions may vary slightly by brand.
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King Mattress Size
Dimensions: 76" x 80"
A King-size mattress provides 76 inches wide and 80 inches long (193.04 cm x 203.02 cm). It’s the ideal choice for couples and families who want maximum room to spread out, especially those who share the bed with kids or pets.
Best for
Couples who want extra personal space, or families who share their bed with young children or pets.
Minimum room size
The minimum room size for a king mattress is 12×12 ft((144 sq ft)) bedroom, which save 2-3 ft for walking space, nightstands or dressers.
California King Mattress Size
Dimensions: 72" x 84"
A California King size mattress measures 72" wide and 84" long, which is narrower and longer than a standard King mattress. California King mattress is the best for individuals and couples who taller than 6 feet (183 cm). It is also a good choice for pet lovers who loves to struggle with them.
Best for
Tall people (over 6' / 183 cm) who wants extra legrooms for comfortable sleep, narrow bedrooms where a wider Standard King (76") would be too tight and pet parents who loves a pet join.
Minimum room size
A longer but a narrow bedroom, minimm 11'x13' ft. can hold a California King bed.
Queen Mattress Size
Dimensions: 60" x 80"
Queen mattress, measures 60" wide and 80" long that is the most popular mattress size for couples. It Offers 30" of personal width per person. Fits well in most master bedrooms, guest rooms, and even larger apartments.
Best for
Ideal for couples and singles who want more room to spread out.
Minimum room size
A 10'x10' ft. bedroom leaves about 2.5 ft on each side and 3.3 ft at the foot — enough to walk around but tight for nightstands or a dresser. A 10'x12' ft. bedroom gives much better breathing room while keeping the Queen as a space-saving choice.
Full Mattress Size
Dimensions: 54" x 75"
Full mattress, also known as a double bed, is 54" wide and 75" long. Slightly narrow than a Queen. Ideal for single adult sleepers and growing children and teenagers.
Best for
A couple who loves to stretch out and share the bed with a small child or a pet.
Minimum room size
A full size mattress works well in small to medium bedrooms, dorms, and guest rooms at least 9' x 9.5 ft. For teens, a full bed provides premium space for growing bodies. Not recommended for most couples.
Twin XL Mattress Size
Dimensions: 38" x 80"
A Twin XL mattress measures 38" wide x 80" long, which is the same width as a standard Twin but 5 inches longer. Designed specifically for taller individuals and college dorm rooms. Fits single comfortably where space at a premium than a twin. Twin XL sheets are widely available, especially in dorm supply stores.
Best for
Teens up to 12 years old. Single adult in small apartments, RVs, or bunk beds, College students that a Twin XL may fits the fixed bed frames perfectly.
Minimum room size
For a comfortable fit, A bedroom at least 8'x10' ft. gives ample spaces for moving around the bed as well as putting your leg on a narrow walking path .
Twin Mattress Size
Dimensions: 38" x 75"
A twin mattress measures 38" wide x 75" long that is the smallest standard adult mattress size. Perfect for children, toddlers transitioning from a crib, and single adults in tight spaces like studios, RVs, or bunk beds. Also the standard size for daybeds and trundle beds.
Best for
Toddlers, kids, bunk beds, loft beds, daybeds and trundle beds, college dorms
Minimum room size
A tight but workable bedroom at least 7'x9.5' ft. Twin sheets are the most affordable and the lowest cost for mattress, bedding, and accessories. Not recommended for adults over 5'9" (175 cm) due to the 75" length.
Things to consider before choosing a mattress
Mattress Size FAQs
Cover the most common questions about mattress dimensions —Twin, Twin XL, Full, Queen, King, and California King.
What size is a twin mattress?
A standard twin mattress, also called a single, measures 38 inches wide by 75 inches long. It's the smallest mattress size, designed for one person, and is a popular choice for kids' rooms, bunk beds, daybeds, and small guest rooms.
What are the dimensions of a full-size mattress?
A standard BedStory Full mattress measures 54 inches wide by 75 inches long, which is 16 inches wider than a Twin, and is recommended for teens and single adults.
What size is a queen mattress?
A standard BedStory Queen mattress measures 60 inches wide by 80 inches long and is 12 to 14 inches thick, making it the best-selling mattress for couples and families.
What size is a king size mattress?
A standard king-size mattress measures 76 inches wide by 80 inches long. It is one of the widest standard mattress sizes available and offers the most personal space for couples, families, co-sleeping with children, or pets.
Are RV mattress sizes different?
The key is understanding the difference between a standard residential queen and the most common RV queen size.
👉A Standard Residential Queen: 60" W x 80" L
👉RV Short Queen: 60" W x 74" L
It's NOT recommended to place a standard queen mattress in a compact RV bedroom; instead, use an RV-shortened mattress, which is much more comfortable for long travel.
Can a queen mattress fit in a minivan?
You can fit a standard queen mattress (60" W x 80" L) in most minivans with proper angling.
Here’s how popular models handle it:
1. Toyota Sienna: Fits well with a slight angle.
2. Honda Odyssey: Fits well; removing the third-row seats maximizes space.
3. Chrysler Pacifica: Fits flat, but may need slight bending for width.
4. Dodge Caravan: Fits with angling due to wheel well intrusions.
What is the difference between a king and a California king mattress?
👉Standard King (Eastern King)
Size: 76" wide x 80" long
Minimum room size: 12' x 12'
Best for: Couples, Families who co-sleep, Master bedrooms.
👉California King (Western King)
Size: 72" wide x 84" long
Minimum room size: 11' x 13'
Best for: Tall individuals (over 6'5") who need extra legroom.
What is the difference between a king and a queen-size mattress?
What is the difference between a full and a queen-size mattress?
The main difference between a Full and a Queen mattress is their size.
A Full mattress has the following specifications:
👉Dimensions:** 54" x 74"
👉Minimum room size:** 9'6" x 10'6" to 10' x 10'
👉Maximum sleep height:** Less than 6'
👉Best for:** Teens and single adults
A Queen mattress, on the other hand, has these specifications:
👉Dimensions:** 60" x 80"
👉Minimum room size:** 10' x 10' to 10' x 12'
👉Maximum sleep height:** 6' to 6'4"
👉Best for:** Couples
For a single adult, a Full mattress is a great space-saver, while a Queen provides more luxury and future-proofing. However, for couples, a Queen mattress is typically considered the minimum size. Sharing a Full mattress may lead to disturbed sleep, especially if one or both partners tend to move around frequently, sleep on their stomachs or backs, or are larger in build.