King Bed Size

The king is a bed size commonly used in the United States. Its width and length are 76 x 80 inches (193 x 203 cm). This is a bed suitable for 1 adult with pet(s) or child(s) / 2 person with a large pet or child to sleep. The recommended room size is 10 x 12 or 13 x 13 feet(120 x 144 / 156 x 156 inches). The room size is not fixed, The recommended size is based on most people's height, habits, etc.

Size king
Bed size(in) 76 x 80 inches
Bed size(cm) 193 x 203 centimeters
Room size(ft) 10 x 12 or 13 x 13 feet
Room size(in) 120 x 144 / 156 x 156 inches

The average length of a normal adult man’s arm is 25 inches (63.5 cm). If we use this as a comparison, the width of the king size bed is about 3 times the arm length, and the length of the king size bed is about 3.2 times the arm length. This can better help you understand The size of the bed.

King bed size

Please note that although there are beds of this size in different countries/regions(North America, United Kingdom, Europe, Australia), they may actually be different in size. See the tables below for details.

North America(US & Canada) Bed Size

Bed(mattress) Size/name Dimensions(in) Dimensions(cm) Comfortably fits Sheets size Room size
Crib 27 × 52 in 69 x 132 cm 1 baby 27 × 52 in 84 x 120 in
213 x 305 cm
Small Single / Cot 30 × 75 in 76 × 191 cm 1 baby/toddler 30 × 75 in 84 x 120 in
213 x 305 cm
Twin / Single 38 × 75 in 97 x 191 cm 1 person 38 × 75 in 84 x 120 in
213 x 305 cm
Twin XL 38 × 80 in 97 x 203 cm 1 person 38 × 80 in 84 x 120 in
213 x 305 cm
Full / Double 54 × 75 in 137 x 191 cm 1 person with a pet 54 x 75 in 120 x 144 in
305 x 366 cm
Full XL 54 x 80 in 137 x 203 cm 1 person with a pet 54 x 80 in 120 x 144/192 in
305 x 366/488 cm
Queen 60 × 80 in 152 x 203 cm 1 person with a pet / 2 person 60 x 80 in 120 x 120/168 in
305 x 305/427 cm
Olympic Queen 66 x 80 in 168 × 203 cm 2 person 66 x 80 in 120 x 120/168 in
305 x 305/427 cm
King 76 × 80 in 193 x 203 cm 1 adult with pet(s) or child(s)
2 person with a large pet or child
76 x 80 in 120 x 144 / 156 x 156 in
305 x 366/396x396 cm
California King 72 × 84 in 183 x 213 cm 1 adult with pet(s) or children
2 person with pet(s) or children
72 x 84 in 144 x 144 / 168 x 144 in
366 x 366/427 x 366 cm

United Kingdom(UK) Bed Size

The size of the same name may be different in United Kingdom and the United States.

Bed(mattress) Size/name Dimensions(in) Dimensions(cm) Comfortably fits Sheets size Room size
Cot 23 x 47 in 59 x 120 cm 1 baby 23 x 47 in 84 x 120 in
213 x 305 cm
Toddler 27 x 54 in 69 x 137 cm 1 baby/toddler 27 x 54 in 84 x 120 in
213 x 305 cm
Small Single 30 × 75 in 76 x 191 cm 1 baby/toddler 30 × 75 in 84 x 120 in
213 x 305 cm
Single 36 × 75 in 91 x 191 cm 1 kid 36 × 75 in 84 x 120 in
213 x 305 cm
Small Double 48 × 75 in 122 x 191 cm 1 person 48 × 75 in 120 x 144 in
305 x 366 cm
Double 54 × 75 in 137 x 191 cm 1 person 54 × 75 in 120 x 144/192 in
305 x 366/488 cm
King 60 × 78 in 152 x 198 cm 1 person and a pet 60 × 78 in 120 x 120/168 in
305 x 305/427 cm
Super King 72 × 78 in 183 x 198 cm 2 person 72 × 78 in 144 x 144 / 168 x 144 in
366 x 366/427 x 366 cm

European Bed Size(except UK)

The size of the same name may be different in Europe and the United States.

Bed(mattress) Size/name Dimensions(in) Dimensions(cm) Comfortably fits Sheets size Room size
Single / Twin 36 x 78 in 91 x 198 cm 1 child 36 x 78 in 84 x 120 in
213 x 305 cm
Single Extra Long 36 x 82 in 91 x 208 cm 1 child 36 x 82 in 84 x 120 in
213 x 305 cm
Small Double 48 x 78 in 122 x 198 cm 1 person 48 x 78 in 120 x 144 in
305 x 366 cm
Double 54 x 78 in 137 x 198 cm 1 person 54 x 78 in 120 x 144/192 in
305 x 366/488 cm
King 63 x 79 in 160 x 198 cm 1 person and 1 child/pet 63 x 79 in 120 x 120/168 in
305 x 305/427 cm
Grand King/Super King 71 x 79 in 180 x 198 cm 2 person 71 x 79 in 144 x 144 / 168 x 144 in
366 x 366/427 x 366 cm

Australia Bed Size

The size of the same name may be different in Australia and the United States

Bed(mattress) Size/name Dimensions(in) Dimensions(cm) Comfortably fits Sheets size Room size
Single 36 x 75 in 91 x 191 cm 1 child 36 x 75 in 84 x 120 in
213 x 305 cm
Long Single/ Single XL 36 x 80 in 91 x 203 cm 1 person 36 x 80 in 84 x 120 in
213 x 305 cm
King Single 42 x 80 in 107 x 203 cm 1 person 42 x 80 in 120 x 144 in
305 x 366 cm
Double 54 x 75 in 137 x 191 cm 1 person and a child/pet 54 x 75 in 120 x 144/192 in
305 x 366/488 cm
Queen 60 x 80 in 152 x 203 cm 1 person and a child/pet 60 x 80 in 120 x 120/168 in
305 x 305/427 cm
King 72 x 80 in 183 x 203 cm 2 person 72 x 80 in 144 x 144 / 168 x 144 in
366 x 366/427 x 366 cm
Super King 80 x 80 in 203 x 203 cm 2 person 80 x 80 in 144 x 144 / 168 x 144 in
366 x 366/427 x 366 cm

There is no uniform standard for bed size over the world. Different regions and different manufacturers have different sizes. Most of them are determined according to local habits, people's height and personal preferences. The above sizes can only be used as a reference.

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