We've spelled out everything you need to know about each standard mattress size, below. Twin (single) 38” x 75” The smallest of the standard adult-size bed options, twin beds are best for kids ...

Twin mattresses are the smallest standard adult mattress size, measuring just 75 inches long by 38 inches wide. Twin beds are ...

A king-size mattress can give you the space you need to sleep comfortably. CNET’s sleep experts tested the best king mattresses from brands like Brooklyn Bedding, Nectar and Saatva. These are ...

all prices shown are for a queen-size mattress topper, but every topper on this list is available in all standard mattress sizes. Once you’ve selected a topper, I also recommend consulting our ...

How big is a king-size mattress? A standard king-size mattress is 76 inches wide and 80 inches long. What are the disadvantages of a king-size mattress? A king-size mattress is much heavier and ...

Keep in mind that custom-sized mattresses might be pricier than standard-sized options, and that you’ll probably also have to order custom bedding. What are all the sizes of mattresses?