A twin mattress is 39 inches wide and 75 inches long. If you’re tall, this may be a little short for you. If you’re over 6 feet tall, you’ll want a longer mattress for your best comfort. The next size to choose from in mattress dimensions is a twin extra long. The width is the same as a regular twin, 39 inches, but the length is 80 inches instead of 75. This is a better bet for you if you’re tall, and it will be much more comfortable for you.
A full mattress is going to give you a little more width. It’s 54 inches wide and like the regular twin mattress is 75 inches …show more content…
Finally, the granddaddy of mattresses, the king sized mattress, is larger than the queen by 4 inches, and it’s 80 inches long. This makes it a little wider and a little shorter than the queen size. This can make it an easier fit for some bedrooms with smaller dimensions. Last in the family of the king-size mattresses is the king split mattress. The king split mattress is the same size as the king mattress for all intents and purposes. However, instead of being one large mattress, it’s actually two twin extra long mattresses placed together.
The box spring is of the same dimensions as the regular king-size, but sleeping arrangements may be easier with a king split mattress if, for example, one partner is a quiet sleeper but the other tosses and turns. Having two separate mattresses means that there’s less jarring for the quiet partner to put up