What are the standard mattress sizes?

Standard US mattress sizes include Twin (38" x 75"), Twin XL (38" x 80"), Full (54" x 75"), Queen (60" x 80"), King (76" x 80"), and California King (72" x 84"). All dimensions are in inches with metric equivalents.

What are the dimensions of a queen size mattress?

Queen size mattress dimensions are 60 inches wide by 80 inches long (152 cm × 203 cm). The area is 33.3 square feet (3.1 square meters).

What are the dimensions of a king size mattress?

King size mattress dimensions are 76 inches wide by 80 inches long (193 cm × 203 cm). The area is 42.2 square feet (3.9 square meters).

What are the dimensions of a full size mattress?

Full size mattress dimensions are 54 inches wide by 75 inches long (137 cm × 191 cm). The area is 28.1 square feet (2.6 square meters).

What are the dimensions of a twin size mattress?

Twin size mattress dimensions are 38 inches wide by 75 inches long (97 cm × 191 cm). Twin XL dimensions are 38 inches wide by 80 inches long (97 cm × 203 cm).

What is the difference between King and California King?

King mattresses are 76" x 80" (wider but shorter), while California King mattresses are 72" x 84" (narrower but longer). California King is ideal for tall sleepers over 6'2".

What are RV mattress sizes?

RV mattresses are typically shorter than standard sizes. RV Queen is 60" x 75" (5" shorter than standard Queen), and RV King is 72" x 75" (5" shorter than standard King).

What size is a standard crib mattress?

Standard crib mattresses measure 27.25" x 51.625" (69.2 cm x 131.1 cm) according to ASTM F1425 safety standards. Mini cribs use 24" x 38" mattresses.

Do UK and US mattress sizes differ?

Yes, UK mattress sizes differ from US sizes. UK sizes include Single (90cm x 190cm), Double (135cm x 190cm), King (150cm x 200cm), and Super King (180cm x 200cm).

What are the mattress dimensions in inches?

Standard mattress dimensions in inches: Twin (38" x 75"), Twin XL (38" x 80"), Full (54" x 75"), Queen (60" x 80"), King (76" x 80"), and California King (72" x 84").

Mattress Size Chart

Complete mattress size chart with US, UK, Australian, New Zealand, and European standards. Includes standard sizes, RV sizes, crib sizes, and international dimensions.

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Complete Mattress Size Chart

Browse all mattress sizes with dimensions in inches and centimeters. Filter by region or view all sizes.

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Unit Display

Size	Length	Width	Area	Best For
TwinUS	75" (190.5 cm)	38" (96.5 cm)	19.8 sq ft (1.84 m²)	Single sleepers, Kids' rooms, Guest rooms
Twin XLUS	80" (203 cm)	38" (96.5 cm)	21.1 sq ft (1.96 m²)	Tall single sleepers, Dorm rooms, Small apartments
FullUS	75" (190.5 cm)	54" (137 cm)	28.1 sq ft (2.61 m²)	Single sleepers (spacious), Couples (tight fit), Teenagers
QueenUS	80" (203 cm)	60" (152 cm)	33.3 sq ft (3.09 m²)	Couples, Master bedrooms, Most popular size
KingUS	80" (203 cm)	76" (193 cm)	42.2 sq ft (3.92 m²)	Couples (spacious), Large bedrooms, Families with pets
California KingUS	84" (213 cm)	72" (183 cm)	42 sq ft (3.9 m²)	Tall couples, Narrow bedrooms, West Coast preference
Small SingleNon-Std	75" (190.5 cm)	30" (76.2 cm)	15.6 sq ft (1.45 m²)	Children, Very small rooms, UK/European markets
Full XLNon-Std	80" (203.2 cm)	54" (137.2 cm)	30 sq ft (2.79 m²)	Tall single sleepers, Dorm rooms, Small apartments
Olympic QueenNon-Std	80" (203.2 cm)	66" (167.6 cm)	36.7 sq ft (3.41 m²)	Couples needing extra width, Spacious bedrooms
RV QueenRV	75" (190.5 cm)	60" (152.4 cm)	31.25 sq ft (2.9 m²)	RVs, Campers, Travel trailers, Small spaces
RV KingRV	75" (190.5 cm)	72" (182.9 cm)	37.5 sq ft (3.48 m²)	Large RVs, Fifth wheels, Motorhomes
Standard CribCrib	51.625" (131.1 cm)	27.25" (69.2 cm)	9.78 sq ft (0.91 m²)	Infants, Toddlers, Nurseries
Mini CribCrib	38" (96.5 cm)	24" (61 cm)	6.33 sq ft (0.59 m²)	Small nurseries, Compact spaces, Portable cribs
SingleUK	74.8" (190 cm)	35.4" (90 cm)	23.5 sq ft (2.18 m²)	Single sleepers, Children's rooms, UK/Ireland market
Small DoubleUK	74.8" (190 cm)	47.2" (120 cm)	31.3 sq ft (2.91 m²)	Single sleepers (spacious), Small couples, UK market
DoubleUK	74.8" (190 cm)	53.1" (135 cm)	35.2 sq ft (3.27 m²)	Couples, Standard UK bedrooms, UK market
KingUK	78.7" (200 cm)	59.1" (150 cm)	40.8 sq ft (3.79 m²)	Couples, Spacious UK bedrooms, UK market
Super KingUK	78.7" (200 cm)	70.9" (180 cm)	49 sq ft (4.55 m²)	Couples (very spacious), Large UK bedrooms, UK market
SingleAU	74" (188 cm)	36.2" (92 cm)	23.2 sq ft (2.15 m²)	Single sleepers, Children's rooms, Australian market
King SingleAU	79.9" (203 cm)	42.1" (107 cm)	29.3 sq ft (2.72 m²)	Tall single sleepers, Teenagers, Australian market
DoubleAU	74" (188 cm)	54.3" (138 cm)	35 sq ft (3.25 m²)	Couples, Standard Australian bedrooms, Australian market
QueenAU	79.9" (203 cm)	60.2" (153 cm)	42.6 sq ft (3.95 m²)	Couples, Spacious Australian bedrooms, Most popular in Australia
KingAU	79.9" (203 cm)	72" (183 cm)	51 sq ft (4.73 m²)	Couples (very spacious), Large Australian bedrooms, Australian market
Super KingAU	79.9" (203 cm)	79.9" (203 cm)	56.4 sq ft (5.24 m²)	Couples (maximum space), Very large bedrooms, Australian market
SingleEU	78.7" (200 cm)	35.4" (90 cm)	24.5 sq ft (2.28 m²)	Single sleepers, Children's rooms, European market
Small DoubleEU	78.7" (200 cm)	47.2" (120 cm)	32.7 sq ft (3.04 m²)	Single sleepers (spacious), Small couples, European market
DoubleEU	78.7" (200 cm)	55.1" (140 cm)	38.1 sq ft (3.54 m²)	Couples, Standard European bedrooms, European market
KingEU	78.7" (200 cm)	63" (160 cm)	43.5 sq ft (4.04 m²)	Couples (spacious), Large European bedrooms, European market
Super KingEU	78.7" (200 cm)	70.9" (180 cm)	49 sq ft (4.55 m²)	Couples (very spacious), Very large European bedrooms, European market
SingleNZ	74" (188 cm)	35.8" (91 cm)	22.9 sq ft (2.13 m²)	Single sleepers, Children's rooms, New Zealand market
King SingleNZ	79.9" (203 cm)	42.1" (107 cm)	29.3 sq ft (2.72 m²)	Tall single sleepers, Teenagers, New Zealand market
DoubleNZ	74" (188 cm)	53.1" (135 cm)	34.2 sq ft (3.18 m²)	Couples, Standard New Zealand bedrooms, New Zealand market
QueenNZ	78.7" (200 cm)	59.1" (150 cm)	40.8 sq ft (3.79 m²)	Couples, Spacious New Zealand bedrooms, New Zealand market
KingNZ	79.9" (203 cm)	64.9" (165 cm)	45.8 sq ft (4.25 m²)	Couples (very spacious), Large New Zealand bedrooms, New Zealand market
Super KingNZ	79.9" (203 cm)	72" (183 cm)	51 sq ft (4.73 m²)	Couples (maximum space), Very large bedrooms, New Zealand market

Twin

Length:75" (190.5 cm)

Width:38" (96.5 cm)

Area:19.8 sq ft (1.84 m²)

Best For:

Single sleepers, Kids' rooms, Guest rooms

Twin XL

Length:80" (203 cm)

Width:38" (96.5 cm)

Area:21.1 sq ft (1.96 m²)

Best For:

Tall single sleepers, Dorm rooms, Small apartments

Full

Length:75" (190.5 cm)

Width:54" (137 cm)

Area:28.1 sq ft (2.61 m²)

Best For:

Single sleepers (spacious), Couples (tight fit), Teenagers

Queen

Length:80" (203 cm)

Width:60" (152 cm)

Area:33.3 sq ft (3.09 m²)

Best For:

Couples, Master bedrooms, Most popular size

King

Length:80" (203 cm)

Width:76" (193 cm)

Area:42.2 sq ft (3.92 m²)

Best For:

Couples (spacious), Large bedrooms, Families with pets

California King

Length:84" (213 cm)

Width:72" (183 cm)

Area:42 sq ft (3.9 m²)

Best For:

Tall couples, Narrow bedrooms, West Coast preference

Small Single

Non-Standard

Length:75" (190.5 cm)

Width:30" (76.2 cm)

Area:15.6 sq ft (1.45 m²)

Best For:

Children, Very small rooms, UK/European markets

Full XL

Non-Standard

Length:80" (203.2 cm)

Width:54" (137.2 cm)

Area:30 sq ft (2.79 m²)

Best For:

Tall single sleepers, Dorm rooms, Small apartments

Olympic Queen

Non-Standard

Length:80" (203.2 cm)

Width:66" (167.6 cm)

Area:36.7 sq ft (3.41 m²)

Best For:

Couples needing extra width, Spacious bedrooms

RV Queen

Length:75" (190.5 cm)

Width:60" (152.4 cm)

Area:31.25 sq ft (2.9 m²)

Best For:

RVs, Campers, Travel trailers, Small spaces

RV King

Length:75" (190.5 cm)

Width:72" (182.9 cm)

Area:37.5 sq ft (3.48 m²)

Best For:

Large RVs, Fifth wheels, Motorhomes

Standard Crib

Crib

Length:51.625" (131.1 cm)

Width:27.25" (69.2 cm)

Area:9.78 sq ft (0.91 m²)

Best For:

Infants, Toddlers, Nurseries

Mini Crib

Crib

Length:38" (96.5 cm)

Width:24" (61 cm)

Area:6.33 sq ft (0.59 m²)

Best For:

Small nurseries, Compact spaces, Portable cribs

Single

Length:74.8" (190 cm)

Width:35.4" (90 cm)

Area:23.5 sq ft (2.18 m²)

Best For:

Single sleepers, Children's rooms, UK/Ireland market

Small Double

Length:74.8" (190 cm)

Width:47.2" (120 cm)

Area:31.3 sq ft (2.91 m²)

Best For:

Single sleepers (spacious), Small couples, UK market

Double

Length:74.8" (190 cm)

Width:53.1" (135 cm)

Area:35.2 sq ft (3.27 m²)

Best For:

Couples, Standard UK bedrooms, UK market

King

Length:78.7" (200 cm)

Width:59.1" (150 cm)

Area:40.8 sq ft (3.79 m²)

Best For:

Couples, Spacious UK bedrooms, UK market

Super King

Length:78.7" (200 cm)

Width:70.9" (180 cm)

Area:49 sq ft (4.55 m²)

Best For:

Couples (very spacious), Large UK bedrooms, UK market

Single

Length:74" (188 cm)

Width:36.2" (92 cm)

Area:23.2 sq ft (2.15 m²)

Best For:

Single sleepers, Children's rooms, Australian market

King Single

Length:79.9" (203 cm)

Width:42.1" (107 cm)

Area:29.3 sq ft (2.72 m²)

Best For:

Tall single sleepers, Teenagers, Australian market

Double

Length:74" (188 cm)

Width:54.3" (138 cm)

Area:35 sq ft (3.25 m²)

Best For:

Couples, Standard Australian bedrooms, Australian market

Queen

Length:79.9" (203 cm)

Width:60.2" (153 cm)

Area:42.6 sq ft (3.95 m²)

Best For:

Couples, Spacious Australian bedrooms, Most popular in Australia

King

Length:79.9" (203 cm)

Width:72" (183 cm)

Area:51 sq ft (4.73 m²)

Best For:

Couples (very spacious), Large Australian bedrooms, Australian market

Super King

Length:79.9" (203 cm)

Width:79.9" (203 cm)

Area:56.4 sq ft (5.24 m²)

Best For:

Couples (maximum space), Very large bedrooms, Australian market

Single

Length:78.7" (200 cm)

Width:35.4" (90 cm)

Area:24.5 sq ft (2.28 m²)

Best For:

Single sleepers, Children's rooms, European market

Small Double

Length:78.7" (200 cm)

Width:47.2" (120 cm)

Area:32.7 sq ft (3.04 m²)

Best For:

Single sleepers (spacious), Small couples, European market

Double

Length:78.7" (200 cm)

Width:55.1" (140 cm)

Area:38.1 sq ft (3.54 m²)

Best For:

Couples, Standard European bedrooms, European market

King

Length:78.7" (200 cm)

Width:63" (160 cm)

Area:43.5 sq ft (4.04 m²)

Best For:

Couples (spacious), Large European bedrooms, European market

Super King

Length:78.7" (200 cm)

Width:70.9" (180 cm)

Area:49 sq ft (4.55 m²)

Best For:

Couples (very spacious), Very large European bedrooms, European market

Single

Length:74" (188 cm)

Width:35.8" (91 cm)

Area:22.9 sq ft (2.13 m²)

Best For:

Single sleepers, Children's rooms, New Zealand market

King Single

Length:79.9" (203 cm)

Width:42.1" (107 cm)

Area:29.3 sq ft (2.72 m²)

Best For:

Tall single sleepers, Teenagers, New Zealand market

Double

Length:74" (188 cm)

Width:53.1" (135 cm)

Area:34.2 sq ft (3.18 m²)

Best For:

Couples, Standard New Zealand bedrooms, New Zealand market

Queen

Length:78.7" (200 cm)

Width:59.1" (150 cm)

Area:40.8 sq ft (3.79 m²)

Best For:

Couples, Spacious New Zealand bedrooms, New Zealand market

King

Length:79.9" (203 cm)

Width:64.9" (165 cm)

Area:45.8 sq ft (4.25 m²)

Best For:

Couples (very spacious), Large New Zealand bedrooms, New Zealand market

Super King

Length:79.9" (203 cm)

Width:72" (183 cm)

Area:51 sq ft (4.73 m²)

Best For:

Couples (maximum space), Very large bedrooms, New Zealand market

How to Choose the Right Mattress Size

1. Consider Your Room Size

Measure your bedroom and ensure there's enough space around the bed. A good rule of thumb is to leave at least 2-3 feet of walking space on all sides.

2. Number of Sleepers

For single sleepers, Twin or Full works well. Couples should consider Queen (most popular) or King for more space. California King is ideal for tall couples.

3. Personal Space Preferences

If you prefer more personal space while sleeping, choose a larger size. King offers the most space for couples, equivalent to two Twin XL mattresses side by side.

4. Bed Frame Compatibility

Ensure your mattress size matches your bed frame. Using a smaller mattress on a larger frame (or vice versa) can cause safety issues and discomfort.

Data Sources:

Standard mattress sizes: ISPA (International Sleep Products Association)
RV mattress sizes: RV Industry Association
Crib mattress sizes: ASTM F1425 Standard
International sizes: Regional standards (UK, Australia, Europe, New Zealand)
Room size recommendations: Based on industry best practices
Last updated: January 13, 2026

Mattress Size Chart

Twin

Twin XL

Full

Queen

King

California King

Small Single

Full XL

Olympic Queen

RV Queen

RV King

Standard Crib

Mini Crib

Single

Small Double

Double

King

Super King

Single

King Single

Double

Queen

King

Super King

Single

Small Double

Double

King

Super King

Single

King Single

Double

Queen

King

Super King

How to Choose the Right Mattress Size

1. Consider Your Room Size

2. Number of Sleepers

3. Personal Space Preferences

4. Bed Frame Compatibility

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