It all depends on which continent you live in. Www.best-mattress-4u.com gives the different mattress sizes for Europe, US and Asia. It's also always best to buy the base and mattress together. If you are just replacing the mattress, be sure to measure your base to get the right size mattress

There are basically five different types of mattresses. They are mattresses for queen-size beds, mattresses for king-size beds, mattresses for long twin-size beds, mattresses for full-size beds or double beds and mattresses for California king-size beds. The mattresses for queen-size beds are typically about 60 inches wide and 80 inches long, and typically measure approximately … Read more