King Size Mattress Frequently Asked Questions

• What are the dimensions of a king size mattress?

  The dimensions of a king bed are 76" wide and 80" long, or, 6' 4" by 6' 8". The height of the mattress varies by model but generally ranges from 6" tall all the way up to 18" tall.

• What's the difference between a king and a cal king bed?

  A king size mattress measures 76" X 80" while a cal king mattress measures 72" X 84". There is no real difference in the area of the bed, it's really all about the length. The cal king was designed for people who are 6' 2" or taller so that their feet do not hang off the bed.

• What's the size difference between a king size and a queen size bed?

  An extra sixteen inches of width. A queen size mattress measures 60" by 80" while a king size mattress measures 76" by 80".

• Do I need a box spring for a king size mattress?

  Yes, a king mattress needs a proper foundation on which to rest and provide you with comfort. However, box springs are unnecessary if you have a platform bed. Also, king box springs come in two pieces for ease of shipping, movement through the house, and set up.