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Mattress Sizes and Dimensions Chart

Mattress Sizes:
A Complete Guide + Chart

Is it time to buy a new mattress? This complete mattress size guidance covers all six standard bed sizes to help you choose the best fit.

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Mattress Sizes Guidance

King

76" x 80"

Master rooms

Cal King

72" x 84"

Extra length

Queen

60" x 80"

Most couples

Full

54" x 75"

Single + pet

Twin XL

38" x 80"

Dorm rooms

Twin

38" x 75"

Kids / Teens

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.

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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.

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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.

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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.

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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 .

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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.

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Considerations for Mattress Size

The quality of your sleep is significantly influenced by your choice of mattress. The right size goes beyond simply fitting your bedroom; it is essential for your overall sleep comfort.

01

Bedroom size

Ensure at least 24–36 inches of walking space around the bed for comfort and accessibility. Carefully measure your room before selecting oversized mattresses, such as Texas King or Alaskan King models.

02

Body height

A mattress should be at least 6 inches (15 cm) longer than your height to ensure adequate space for comfortable stretching. For individuals 6 feet tall or taller, consider mattresses at least 80 inches long.

03

Sleeping positions

Consider how much spaces for a comfortable sleep based on your sleep positions. Side sleepers move less horizontally, so a standard mattress size is best. Back and stomach sleepers may prefer a wider one.

04

Sleeping partners

Who will you share the mattress with? The queen mattress is the most popular bed size for couples, but larger mattresses provide a more comfortable sleeping environment when children or pets are present.

05

Budget

Larger mattresses, such as Queen, King, and California King, typically cost more than smaller sizes like Full, Twin XL, and Twin. They may also necessitate specialized bed frames, foundations, bedding, and accessories.

06

Future plans

Mattresses are a long-term investment. Consider potential lifestyle changes over the next 5 to 10 years, such as moving to a larger home, sharing your bed with a partner, or accommodating growing children and pets.

Which Mattress Size Should You Choose?

The right mattress size depends on who’s sleeping in it and whether you’ll be sharing with a partner, pet, or child.
Children & Kids

A Twin or Twin XL mattress is often ideal for kids aged 3 to 4, as they transition from a crib mattress. For children aged 10 to 12, a full size mattress is recommended. These sizes are cost-effective and will comfortably accommodate their changing needs.

Teens & Single adults

For teenagers aged 14-18, Twin XL and Full mattress sizes are the most budget options. For single adults, the Queen size is preferred. These sizes offer ample legroom, providing sufficient space for comfortable stretching and accommodating their growing bodies.

Couples

A Queen, King, or California King mattress is recommended for couples sharing a bed, as these sizes provide ample width for both individuals to sleep comfortably without disturbing one another. It is advisable to avoid a Full mattress unless absolutely necessary.

Adults with Pets or Kids

Opt for a King or Cal King mattress, especially for couples with a pet or child. This choice significantly enhances sleep quality when sharing space with additional family members. If your room is smaller than 12' x 12', consider a Queen mattress as an alternative.

Crib & Toddler Mattress Size

Dimensions: 28" x 52"

The standard crib mattress size is 28 inches wide and 52 inches long (71 x 132 cm). It is designed specifically for infants and toddlers. Crib mattress. For smaller spaces, a mini crib mattress measuring 24 inches wide by 38 inches long is also a good choice.

Olympic Queen Mattress Size

Dimensions: 66" x 80"

The Olympic Queen mattress offers a larger sleeping surface than the standard Queen, measuring 66 inches wide by 80 inches long (168 x 203 cm). With an additional 6 inches of width compared to a regular Queen (60" x 80"), it provides extra space for couples or individuals who desire more room to stretch out.

Spilt King Mattress Size

Dimensions: 38" x 80"

A Split King mattress is essentially two Twin XL mattresses (each 38" x 80") placed side by side, forming a King-sized bed measuring 76 "wide by 80" long. This size is ideal for couples with different firmness preferences, sleep schedules, or body temperature needs.

Wyoming King Mattress Size

Dimensions: 84" x 84"

The Wyoming King mattress measures 84 inches wide by 84 inches long (213 x 213 cm). It offers a generous square-shaped sleep surface for people up to 6'6". A Texas King (98 inches long) is more comfortable due to its extra legroom if you are over 6'6".

Texas King Mattress Size

Dimensions: 80" x 98"

A Texas King mattress measures 80 inches wide by 98 inches long (203 x 249 cm), making it one of the largest mattress sizes available. It's an excellent choice for tall sleepers, couples who are 6'6" (198 cm) or taller.

Alskan King Mattress Size

Dimensions: 108" x 108"

The Alaskan King Mattress size is 108" x 108" (274 cm x 274cm), which is essentially a square-shaped mattress, offering enormous sleeping space—enough for a couple with children or pets to sleep very comfortably.

How to Choose the Right Mattress for You?

Mattress Buying Guide

Top Questions About Mattress Sizes

Didn't find your answers? Email customer service team at hello@bedstory.com for help.

What are the standard mattress sizes in the U.S.?

The six standard U.S. mattress sizes are Twin, Twin XL, Full, Queen, King, and California King. Their standard dimensions are:

  • Twin: 38" x 75"
  • Twin XL: 38" x 80"
  • Full: 54" x 75"
  • Queen: 60" x 80"
  • King: 76" x 80"
  • California King: 72" x 84"

Step 1: Who will sleep on the mattress?

Step 2: What's the sleeper's height?

Step 3: What's your bedroom size?

Step 4: What's your budget and your plan for the next 3-5 years?

Twin and Twin XL: kids, college students, bunk beds.

Full: Guest rooms, one sleeper.

Queen: Couples, master rooms, two sleepers.

King and Cal King: couples with child or pet, 3 sleepers.

For one person, Twin, Twin XL, and Full mattresses all work. Twin is the most space-efficient, Twin XL provides 5 inches more length for tall sleepers(6' to 6'4"), and Full provides 8 inches more width than Twin.

A Queen mattress is the most popular size for most couples at 60" x 80". Taller couples(more than 6'4") recommend considering a California King(72" x 84") for its additional length.

Twin mattresses are generally the easiest to fit into 7' x 9.5' compact bedrooms. Twin XL mattresses require a bedroom size of at least 9' x 9.5' to fit a twin XL mattress while leaving room for nightstands, dressers, and desks.

Tall single sleepers(up to 6'4") should generally consider a mattress at least 80 inches long, such as Twin XL, Queen, or King. A California King provides 84 inches of length, making it one of the longest commonly available standard mattress sizes for tall sleepers over 6'4".

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.

A Queen mattress measures 60" x 80", while a King measures 76" x 80". Both are the same length, but a King provides 16 additional inches of width. Queen is generally easier to fit into average bedrooms, while King offers more personal sleeping space for couples.

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.

A Twin mattress measures 38" x 75", while a Twin XL measures 38" x 80". Both mattress sizes have the same width, but the Twin XL adds 5 inches of length, making it better suited to taller teenagers, college students, and adults.

Left approximately 24 to 36 inches of clear walking space around accessible sides of the bed. You should also account for nightstands, dressers, doors, closets, and the dimensions of the bed frame—not just the mattress itself.

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.

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.

Answer content goes here.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.

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.