Mattress Sizes
Updated February 23, 2017 | Factmonster Staff 
The Question:
What are the dimensions of a king-size mattress?
The Answer:
There are no standards in the mattress industry but the sizes below will give you some idea of different mattress sizes.
| Twin | 39 x 76 in. |
| Twin X-Long | 39 x 80 in. |
| Full | 54 x 75 in. |
| Queen | 60 x 80 in. |
| King | 78 x 80 in. |
| Cal-King | 72 x 84 in. |
-The Fact Monster
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