Are you looking to buy a bed and want to know about bed dimensions? Or you might be among the individuals that are out to purchase a mattress and wish to know the king size bed dimensions in cm. Many people don’t know, but the bed sizes and dimensions vary based on the region. You may find that a king-size bed in the UK is different from the US's king-size bed. Similarly, other regions, such as Canada, Ireland, Australia, and Europe, are different.