What is the difference between King size and California King size beds? August 07, 2018 18:48 Updated California King size is 4" longer and 4" narrower than the King (or Eastern King) size. Related articles What is a "split box spring"? Why do I need a box spring? What are the Twin XL and Full XL sizes? What are the mattress options for cabinet beds? What are the benefits of one-sided mattresses?
