Bed size

Standard bed sizes are based on standard mattress sizes, which vary from country to country. Bed sizes also vary according to the size and degree of ornamentation of the bed frame. Dimensions and names vary considerably around the world, with most countries having their own standards and terminology. In addition, two mattresses with the same nominal size may still have slightly different dimensions, due to manufacturing tolerances, amount of padding, and support type.

Modern manufacturing conventions have produced many standard mattress and box spring sizes. Beds vary by country of origin as per the table below. These dimensions are for the mattress – actual bed frames are a little larger to accommodate the mattress. Mattress thickness varies considerably.

Standard bed sizes in the US and Canada are:

In addition to the sizes described above, other sizes have found some acceptance in North America, including:

Most modern beds/mattresses sold in the UK and Ireland are constructed using metric dimensions.

It is worth noting that "bed size" in the UK generally refers to mattress size. This is because mattresses have a standard size grading, whereas bed frames do not. While many companies in the UK do offer bespoke bed making services, most mass-produced bed linens, bed frames and mattresses fit only the standard bed sizes above. A common mistake is to use a mattress size as the required space for the full dimensions of the bed and mattress.

Single size beds are usually 90 cm wide by 190 cm long.

Most common sizes for double beds are:
140 cm wide by 190 cm long
160 cm wide by 200 cm long
180 cm wide by 200 cm long (less common, but increasing popularity).

Due to the popularity of imported beds (especially from IKEA), the 200 cm length is becoming more common.

In Italy, beds are classified by name. Standard sizes are:

Less common:

Due to the popularity of imported beds (especially from IKEA), the 200 cm length is becoming more common.

These sizes are for Germany, Poland, Netherlands, Belgium, Norway, Sweden, Denmark, Iceland, Finland, Estonia, Latvia, and Lithuania. There are some variations between the Nordic countries and the Baltic nations, but these are the most common sizes:

Single:

Double:

Most beds are 200 cm (79 in) cm long. Extra long beds are usually 220 cm (87 in), but they are rare.

In Portugal the most common sizes for beds are:

Solteiro (single) 80 cm (31.5 inches) wide by 190 cm long (can go up to 105 cm wide by 200 cm long)

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Wikipedia