How Long Is A Baby Crib Mattress

Choose a mattress designed for the crib size.

How long is a baby crib mattress. You may notice that many crib mattresses have 10 year warranties so it s pretty much an assumption that a crib mattress may last as much as a normal mattress let s say about 5 to 10 years depending on usage. Internal dimensions of standard size baby cribs are regulated by the government so they are approximately the same for all full size cribs all standard size crib mattresses fit into all standard size cribs. Due to different materials frame designs and style the external dimensions of standard size baby cribs can vary by a few inches even if they belong to the same crib type. When choosing a crib mattress parents should find one that fits into the crib snugly and leaves a space smaller than two adult finger widths on each side.

Therefore where a baby would outgrow a standard crib around 3 years of age he might outgrow the mini crib before his second birthday. At these dimensions the standard crib mattress will fit safely in a full size crib which can have an interior width of between 27 3 8 inches and 28 5 8 inches and an interior length of between 51 3 4 inches to 53 inches. Baby crib mattresses include both foam mattresses and coil mattresses. Standard crib mattresses are required to be a minimum of 27 25 inches 69 2 cm by 51 25 inches 129 5 cm.

A full size crib mattress must be at least 27 1 4 inches wide 51 1 4 inches long and no more than six inches thick. A mini crib mattress usually measures about 38 inches long by 25 inches wide which is almost 20 inches shorter than the 59 inches of a standard crib.