The standard crib mattress size can be perfectly fitted in the crib for a baby. The federal government mandates the standard crib mattress size for safety reasons - the gap between the mattress and the crib should not be greater than two fingers wide.

For this reason, the toys should not be placed in the crib unsupervised by adults. Otherwise, the baby could be at risk of asphyxiation.

It has the same length as the twin-sized bed but is 8 inches shorter in width. They are usually interchangeable, but the standard twin size is much more prevalent today. It is also a good option if you are looking for a bed for single individuals while you’re on a tight budget.

This is the smallest mattress size available for an adult. It is also a good option for single sleepers who are not more than six feet. This size is commonly used in bunk beds, college dorm rooms or small guest rooms. We definitely don’t recommend getting a Twin if you are more than 6 feet, it would not be a pleasant sleeping experience at all.

Putting two twin XL size beds side-by-side together, then you can get a king size bed. It’s a good trick if you want to share a king size bed with your sleep partner but don’t want to be bothered by each other.

A full-size mattress is also known as the “double” size, which refers to double the width of an ordinary twin bed.

This size is also ideal for single sleepers looking for more space to sprawl out in bed. A full size mattress may not be a good choice for couples that want more space since you would only have 27 inches of width per person to sleep on.

Compared to the standard full size, the full XL is 5 inches longer in length. The larger legroom for taller individuals to sleep alone. It can also be a good choice for a spare bed for guest rooms.

A queen size mattress is 60” W x 80” L. It is the most popular mattress size in the U.S. It is ideally suited for couples who do not require too much space or single sleepers who prefer extra space to sprawl out or move around.

The most common luxurious sleep experience is usually on a king sized bed. The large surface area makes it an excellent choice for two adults with kids or even pets.

Lose 4 inches in width compared to the king size mattress but gain an additional 4 inches in length, making it more suitable for tall sleepers, offering more legroom. It can accommodate a couple comfortably and an extra sleeper as well, such as a kid or even a pet.

The Olympic queen has the same length as the standard queen size bed but is 6 inches wider than the standard queen size bed. The wider space is comfy for the couple.

But it’s hard to find pretty bedding and accessories to match this size, which can be rather inconvenient.

The longest standard mattress on the market, the California king mattress measures a whopping 72 inches wide and 84 inches long. Its generous length makes it ideal for taller individuals, especially people more than six feet tall. Of course, people of average height might also benefit from a California king depending on how many people and pets are sharing the bed.

Wyoming king is the smallest in size of the oversized mattresses. It is 84 inches by 84 inches.

It is 12 inches wider than the Cal king mattress but just as long. Since it is 12 inches wider, there is definitely no need to worry about feeling cramped for space.

Named after the U.S. second largest state, Texas, the Texas King mattress is the second largest size for a mattress on the market, as the name implies. It is a perfect option for taller sleepers who possess a spacious master bedroom.