Below, you can see a chart which represents most of the common mattress dimensions in the USA. Please note all sizes are in inches and that this chart is not comprehensive of ALL the different bed sizes, just the more popular ones.
Matt Reigle is the founder of BestBedding.com and has been an avid bedding lover his whole life in addition to selling bedding for the last 10 years. He's always happy to share his thoughts on your bed and enjoys design and fishing in his spare time. You can catch him on Google+.