December 17, 2019
Filed under: Mattress Guide

Twin size mattresses are built to industry standard dimensions. Twin XL beds are approximately 38 inches wide by 80 inches long. Twin XL beds are longer than regular Twin mattresses by about 5 inches. 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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