King Bed Size Chart and dimensions guide

This post was last updated on December 28th, 2021 at 09:45 pm

King-sized beds are one the largest types of beds available, effectively matched with a king-size mattress (largest mattress size or king mattress), a few inches wider than the queen size. The king-size bed is ideal for sleeping with a partner and leaves plenty of sleeping space around for those who like to toss and turn around while asleep. The king-size bed dimensions for the mattress are 80 inches long or 203 cms in length and 76 inches or 190 cms wide. It offers quite some ample legroom to spread wide and enjoy your sleep. King beds provide the same amount of space as two Twin Beds placed next to each other

The king bed requires extra bedroom floor space compared to other beds hence fits well in a large bedroom or master bedroom. If you need more inches of space then this is your best bet.

Looking for other bed sizes and bedframe dimensions? check the most complete bed size post here

King Bed Size Chart

King Size Beds have a length of 80” (203 cm) and a width of 76” (193 cm). King Size Beds have an overall area of 42.22 ft2 (3.92 m2). King Size Beds typically have mattress thicknesses in the range of 9”-12” (22.9-30.5 cm). Check the mattress brands size here to find your preferred King size mattress.

  • Width: 76″ – 193 cm
  • Depth: 9”-12” – 22.9-30.5 cm
  • Length: 80” – 203 cm
  • Area: 42.22 ft² – 3.92 m²

Round King Bed

A round King Bed gives your bedroom that extra style touch. The offer of round king mattresses is more limited, but with the below round king bed sizes you’ll get a long way finding the perfect fit.

  • Width: 87” – 221 cm
  • Depth: 10”-12” – 25.4-30.5 cm
  • Length: 87” – 221 cm
  • Area: 41.3 ft2 – 3.84 m2


Similar Beds sizes by Country:

Many countries have different bed sizes. A comparison of similar King bed sizes in different countries

  • US: 193 cm x 203 cm
  • UK: 180 cm x 200 cm (Super King)
  • Australia: 183 cm x 203 cm (King)
  • New Zealand: 183 cm x 203 cm (Super King)
  • Continental Europe: 180 cm x 200 cm (Super King)
  • Scandinavia: 180 cm x 200 cm (Swedish Double)
  • Japan: 170 cm x 195 cm (King)
  • China: 182 cm x 212 cm (King)
  • Thailand: 183 cm x 198 cm (King)
  • Singapore: 183 cm x 191 cm (King)
  • Brazil: 193 cm x 203 cm (King)
  • South Africa: 183 cm x 188 cm (King)

Bedroom layouts with King Beds

Find below the minimal and ideal room size for rooms with a king-sized bed. When the room comprises a desk or closet you can find the sizes in the below list

  • King Bed Size: 76” x 80” – 193 x 203 cm
  • Room Length (Min.): 9’2” – 279 cm or 2.79 m
  • Room Width (Min.): 11’4” – 345 cm or 3.45 m
  • Room Area (Min.): 105 ft² – 9.62 m²
  • Ideal Length: 10’ – 3.30 m
  • Ideal Width: 11’9” – 4.2 m
  • Ideal Room Area: 119 ft2 – 12 m2
  • Room with closet Length: 11’6” – 302 cm or 3.02 m
  • Room with closet Width: 12’1″ – 430 cm or 4.3 m
  • Room with closet area: 141 -147 ft2 or 13.1-13.7 m2 

King size bed dimension FAQ

How long is a King Size Bed?

King size beds are 80” (6’8″) or 203 cm long

How wide is a King Size Bed?

King size beds  are 76” (6’4″) or 193 cm wide

What are the dimensions of a King Size Bed?

King size beds are 80” (6’8″) | 203 cm long and 76” (6’4″) | 193 cm wide., making them use an area of 42.22 ft² or 3.92 m²

What is a bedrooms size for a King Size Bed?

Bedrooms with King size beds should have minimum area of around 119 ft2 or 11 m2 to between 141-147 ft2 or 13.1-13.7 m2.

Picture in this King size bed post by Francesca Tosolini on Unsplash

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