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www.reference.com/article/standard-sizes-mattresses-4be18537eabf9335

The standard size of a twin mattress is 39 inches by 75 inches, while a full mattress is 54 inches by 75 inches. A queen mattress is 60 inches by 80 inches. A king mattress, also called an eastern mattress, is 76 inches by 80 inches, according to Bedding Experts.

www.reference.com/article/standard-queen-size-mattress-cd010a3fb991888f

In the United States, the dimensions of a standard queen-size mattress are 60 inches wide and 80 inches long, according to the Better Sleep Council. The queen-size mattress is popular because it fits into smaller spaces while providing plenty of room for single sleepers...

www.reference.com/article/different-sizes-mattresses-3b7c689c546b0424

The standard sizes for adult mattresses are twin, full, queen and king. A longer alternative to the standard king-size bed is the California king. Crib and toddler size mattresses are for use in children's beds.

www.reference.com/article/size-standard-crib-mattress-e3db5b97a480670d

A standard crib mattress should measure 27.25 inches by 51.25 inches. The thickness on a standard crib mattress should not be greater than 6 inches.

www.reference.com/article/standard-length-king-sized-mattress-e0a28f861fc1f85d

The standard length for a king-size mattress is 80 inches. This is the same length as a queen-size mattress, but a king is 16 inches wider than a queen.

www.reference.com/article/standard-size-california-king-mattress-666cd2ceaf64e594

The standard size of a California king mattress is 72 inches in width by 84 inches in length. It is 4 inches narrower and 4 inches longer than a typical standard king mattress.

www.reference.com/article/many-mattress-sizes-7259e694cdc4f8ef

There are nine mattress sizes available, according to the Better Sleep Council. In addition to the standard twin, twin extra-long, full, queen, king and California king mattress sizes, there are also special mattresses for futons, cribs and toddler beds.