Dimensions Guide

king size mattress dimensions

King size mattress dimensions in the US are approximately 76 x 80 inches. In the UK, a King size bed measures 60 x 78 inches.

You should check out the different available king mattress dimensions before deciding to buy one. There are those who have the mistaken notion that there is only one standard mattress size when you talk about these mattresses. In reality, there are a couple of mattress dimensions you’ll find when shopping for a king size mattress.