How Long Are Babies In Size 1 Diapers (And Why)?

How Long Are Babies In Size 1 Diapers (And Why)?

Exact Answer: 8 – 14 Pounds In Weight

Baby diapers are a piece of soft cloth or any other absorbent material wrapped around a baby’s bottom and between the baby’s legs to absorb and retain urine and feces. It is called a nappy in layman’s language. It is a type of underwear that allows newborn small babies to urinate without using a toilet. Diapers absorb the waste products and help in preventing the baby from spoiling the external environment or his outer clothing.

Diapers are made of cloth or some kind of materials that can be disposed of after use. They have multiple layers of sheets to enhance their absorption capacity and efficiency. Such disposable diapers contain certain absorbent chemicals that can be safely thrown away after use. Primarily newborns, infants, and toddlers who are not yet toilet trained are made to wear diapers.

46 3 4

How Long Are Babies In Size 1 Diapers?

There are several baby diaper brands available in the market today such as Pampers, Huggies, etc. Diapers sizes are majorly determined by the weights of the babies. As the growing and development time is not the same for any two babies, the length of time a baby uses a particular size of the diaper can vary significantly. In almost all major baby diaper brands, size 1 is suitable for babies who come in the 8 – 14 pounds category in terms of their weight.

An average infant gets ready for size 1 diapers when he weighs about 8 – 10 pounds during birth. However, not all babies will weigh 8 pounds during birth. Those who weigh less can start with the newborn variety of sizes that many diaper brands offer for infants. These babies can later transition to size 1 diapers after a month or two when they start fitting the weight category prescribed for size 1 diapers. For such babies, size 1 might fit comfortably after 1 – 2 months.

According to several studies conducted on newborn babies ‘ weight, the average birth weight of a newborn is found to be ranging between 5.8 to 10 pounds. Thus, certain babies can fit into size 1 diapers shortly after their birth. A newborn on average grows by1.5 – 2 pounds per month. Hence, it can be concluded that a baby will quite easily outgrow size 1 diapers by the time he is about 6 months old.

NewbornUp to 10 pounds
Size 18 – 14 pounds
Size 212 – 18 pounds
Size 316 – 28 pounds
Size 422 – 37 pounds

Why Are Babies This Long In Size 1 Diapers?

Most standard newborn baby diapers are designed to fit babies having weight up to 10 pounds. But as all babies are different and grow at different rates, one can not categorize a baby into a specific diaper size. Thus, each diaper brand as well as its various sizes might fit a bit differently to each baby.

Most standard size 1 diapers are specifically designed to fit comfortably babies weighing about 8 to 14 pounds. Some larger babies do start wearing size 1 diapers from the time they are born.

One can easily notice that there is a size overlap between the newborn size diaper and the size 1 diaper. Newborn diapers are designed for babies up to weight 10 pounds whereas size 1 is for babies weighing 8 – 14 pounds. Thus, a baby of 8 or 9 pounds can wear either of the two sizes of diapers.

Babies do keep changing their diaper sizes quite rapidly as they are in their growth and development stage. One should never buy a lot of diapers of a certain size as one cannot estimate how long will the baby grow or what will be the baby’s weight during the time of birth to keep diapers ready even before he is born.


Diapers are undoubtedly one of the most important requirements for a baby that any parent cannot possibly miss out on. However, not every diaper is suitable for every baby. Utmost care should be taken to choose the right size of diaper for one’s baby, as by choosing the wrong size not only the baby feels uncomfortable and irritated but also there is an inevitably high risk of diapers mishaps taking place.

For a baby who is about 2 – 4 months old, weighing around 8 – 14 pounds, a diaper of size 1 is the most suitable. By choosing the right size of diaper for one’s child, parents are ensuring that their child faces absolutely no discomforts and is happy throughout the day.


dot 1
One request?

I’ve put so much effort writing this blog post to provide value to you. It’ll be very helpful for me, if you consider sharing it on social media or with your friends/family. SHARING IS ♥️

Leave a Comment

Your email address will not be published. Required fields are marked *