King size bed is 76 inches wide x 80 inches long what are the dimensions of a queen size bed? The measurements of a regular king are approximately 76 inches in width and 80 inches in length. 72 x 84 inches (183 x 213.5cm) this size is 4 inches narrower and 4 inches longer than a us king size, making it a good solution for taller adults. Queen size bed is 60 inches wide x 80 inches long 10 best mattresses 2022 #1 saatva. Single bed, long single, king single, double size, queen size, king size and super king.