December 17, 2019
Filed under: Mattress Guide

Mattresses are built to standard dimensions. For example, a king size mattress is approximately 76 inches wide by 80 inches long, and a queen mattress is always 60 inches wide by 80 inches long. Use the table below to compare mattress sizes.






Width x LengthStandard Size
38″ x 74.5″Twin
38″ x 79.5″Twin XL
53″ x 74.5″Full
60″ x 79.5″Queen
76″ x 79.5″King
72″ x 83.5″California King


National Sleep Foundation’s logo, name, materials and/or insights used under license from NSF in exchange for Serta’s financial support of NSF’s sleep research and educational activities.

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