How big is a toddler mattress?

How big is a toddler mattress?


A toddler mattress is an essential component of a child’s sleep environment. It provides comfort and support for their growing bodies. But how big is a toddler mattress? In this article, we will explore the dimensions of a typical toddler mattress and discuss some important factors to consider when choosing the right size for your little one.

Standard Toddler Mattress Dimensions

Dimensions: A standard toddler mattress typically measures 28 inches wide by 52 inches long. This size is designed to fit most toddler beds and cribs. However, it’s important to note that there may be slight variations in size among different manufacturers.

Thickness: The thickness of a toddler mattress can vary, but it is usually around 5 to 6 inches. This thickness provides adequate support for a toddler’s developing body while still maintaining a comfortable sleeping surface.

Factors to Consider

When choosing a toddler mattress, there are a few factors to consider besides the dimensions:

Safety: Safety should be a top priority when selecting a toddler mattress. Look for mattresses that meet safety standards, such as those set by the Consumer Product Safety Commission (CPSC). These standards ensure that the mattress is free from harmful chemicals and meets specific safety requirements.

Materials Used: Toddler mattresses can be made from various materials, including foam, innerspring, or organic materials. Foam mattresses are lightweight and often more affordable, while innerspring mattresses provide more support. Organic mattresses are made from natural materials and are a good option for parents concerned about chemicals and allergens.

Firmness: Toddlers need a firm mattress to support their growing bodies. A mattress that is too soft may increase the risk of suffocation or Sudden Infant Death Syndrome (SIDS). Look for a mattress that offers the right balance of comfort and support.

Waterproofing: Toddlers are prone to accidents, so a waterproof mattress can be a practical choice. A waterproof cover or mattress protector can help protect the mattress from spills and stains, making it easier to clean.


A standard toddler mattress measures 28 inches wide by 52 inches long, with a thickness of around 5 to 6 inches. When choosing a toddler mattress, consider factors such as safety, materials used, firmness, and waterproofing. By selecting the right size and features, you can ensure your child has a comfortable and safe sleep environment.