KING MATTRESSES Traditional king-size beds measure 76 inches wide by 80 inches long. California king-size beds measure 72 inches wide by 84 inches long. Sharing a king-size bed with another person affords one the same room as sleeping alone in a twin-size bed.

QUEEN MATTRESSES The most popular mattress size around, the queen mattress fits best in a master bedroom that’s at least 10 x 10 square feet. At 60 inches wide and 80 inches long, the queen offers plenty of space for couples or individuals who like having
extra room to move around in bed.

FULL MATTRESSES The dimensions of full-size beds are 54 inches wide by 75 inches long. They are sometimes called double beds. Before king and queen sizes existed, most couples slept on full-size beds. These beds are ideal for pre-teens or teens who are shorter than 65 inches.

TWIN MATTRESSES The dimensions of twin-size beds are 35 inches wide by 75 inches long. They are often ideal for a child’s bedroom, and can fit on daybeds, bunk beds, and other small bed frames. There are also Twin XL mattresses that are usually 38 inches wide and 80 inches long, making them a good choice for pre-teens and teens who are starting to grow.