Nearly half of Which? members own a king-size mattress, making it the most popular size – and they're widely available. This is because, in the UK and Ireland, manufacturers are permitted a tolerance of +/- 2 cm of the measurements that are stated.

France uses a variety of double bed sizes. Some of the most common sizes are 140 cm x 190 cm, 160 cm x 200 cm and 180 cm x 200 cm. Be aware, that this measurement is not entirely standardised for double mattresses. The size of a double mattress may vary ever so slightly between manufacturers. A European small double bed and mattress is 120cm wide and 200cm long. (4ft wide by 6ft 6ins long). Like their UK equivalent, they’re ideal for couples who have small bedrooms, teenagers, and if you want more sleeping space than a single bed offers. What size is a Euro double bed and mattress?

4.Cot mattresses

Double bed sizes can vary between European countries. We’ll outline a few common double sizes used in a selection of countries throughout Europe. Although Australia uses the metric system, they share similar dimensions to North America in regard to the size of a double mattress. Australia’s double beds measure 136 cm x 189 cm. While it’s the same length as a standard single – and therefore long enough for most adults – it’s 15cm narrower.

In Spain, double beds are referred to as “cama de matrimonio” (marital bed). The most common size for a double mattress (or marital mattress) in Spain is 135 cm x 190 cm. What Size is a Double Mattress in North America?Soft mattresses are best suited for side sleepers. This mattress comfort grade type offers a deep cushion hug.- A double mattress measures 135 x 190cm (approximately 4ft 6in x 6ft 3in). It’s the second most popular mattress size. A Euro super king bed is 180cm wide and 200cm long (6ft wide and 6ft 6ins long). This makes them the same size as UK super kings which provide the largest sleep space available of all beds. This makes them perfect for couples who need maximum space and comfort.