There is a tolerance of ± 1” on standard sizes based on the amount of padding and type of construction. When choosing a mattress, make comfort a priority – bigger is usually better.
If there is more than one person sleeping in the bed, you should consider purchasing a queen or king size mattress because they are wider and longer than the standard full size.
Below are the dimensions for standard mattress sizes:
Twin: 39” x 74”
Full: 54” x 74”
Queen: 60” x 80”
King: 76” x 80”
California King: 72” x 84”