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Diapering
Updated on 5 July 2023
A newborn baby might need at least 10 to 12 diapers a day, but as they grow older, this decreases to 6 to 8. However, since babies spend a considerable amount of time in diapers, parents should choose the correct diaper size, as ill-fitting diapers can cause discomfort. A loose diaper may cause a leak, and a too-tight diaper may cause rashes.
However, for new parents, there are no universal sizes of diapers. These diapers size may vary for each infant, just like their clothes and footwear. The diaper sizes also depend on the baby's weight. Check out the diaper size chart below to understand what kind of diapers a child needs.
For newborns, the size of the diaper is different. Once the baby turns six months old and starts consuming solid food, they will need perfectly fitting diapers.
Diaper size |
Recommended age |
Weight (lbs) |
Newborn |
Newborn up to first few weeks |
< 10 |
1 |
2-4 months |
8-14 |
2 |
4-7 months |
12-18 |
3 |
7-12 months |
16-28 |
4 |
18-48 months |
22-37 |
5 |
3-4 years |
27-35 |
6 |
4+ years |
>35 |
Diaper size |
Average baby weight (lbs) |
Average number of diapers needed per day |
How long will the baby be in this size? |
Average age baby might use these diapers |
Premature |
less than 6 |
as needed |
only while premature |
after birth |
Newborn |
6-10 |
8-12 diapers |
first few weeks |
for the first few weeks |
1 |
8-14 |
8-10 diapers |
3 months |
birth through 4 months |
2 |
12-18 |
8-9 diapers |
2-4 months |
8-10 months |
3 |
16-28 |
6-7 diapers |
up to a year |
5-24 months |
4 |
22-37 |
5-7 diapers |
up to a year |
18-36 months |
5 |
>37 |
as needed |
as needed |
2-3 years old |
Diaper size |
Weight of the baby (pounds) |
Size 1 |
8-14 |
Size 2 |
12-18 |
Size 3 |
16-28 |
Size 4 |
22-37 |
Size 5 |
27-35 |
Size 6 |
>35 |
While diaper size charts are available for most diapers, it is difficult to find the same for cloth diapers. Each manufacturer designs their product by customizing the material, length and other details. As a result, there is no universal sizing for cloth diapers. Instead, parents can look through the manufacturer's website to get an idea of the size. Some manufacturers also provide cloth diapers with various button levels, allowing the diaper to be adjusted regardless of the baby's age.
The diapers can get too tight, leading to rashes on the baby's skin. However, sometimes the diapers can be too loose which can cause leaks. So, how can you ensure the diaper is in the right size? Here are some sizing tips for diapers:
The tabs used to secure the diapers should fit snugly without anyone having to pull them shut.
The diaper should cover the baby's bottom to prevent leaks or blowouts.
If there are any red marks on the tummy of the baby, it means that the diaper is too tight, and it is time to switch to a bigger diaper size.
Diaper size |
Baby's average weight (lbs) |
Average number of diapers/day |
How long baby will be in that size |
Average age baby might use these diapers |
Premature |
< 6 |
10 |
only while premature |
after birth |
Newborn |
6-10 |
8-12 |
first few weeks |
first few weeks |
1 |
8-14 |
8-10 |
3 months |
up to 4 months |
2 |
12-18 |
8-9 |
2-4 months |
3-8 months |
3 |
16-28 |
6-7 |
up to a year |
5-24 months |
4 |
22-37 |
5-7 |
up to a year |
18-36 |
While choosing the right diaper size, it is crucial to pick one that fits well. Keep a two-finger space between the baby's waist or butt and the diaper. If the gap is smaller, the diaper is tight for the baby.
Many believe that cloth diapers are better than disposable ones because they reduce rashes. However, this is not proven. Parents should choose diapers after research. A soft and adsorbent diaper is recommended.
Yes. However, while many brands offer different types of diapers for boys and girls, parents can use unisex diapers.
While diapers do not expire, manufacturers usually recommend using them within two years from the date of purchase.
If the current diaper is not covering the bottom of the baby or if there are any red marks on the thighs and stomach of the baby, the baby needs a bigger diaper size.
Leaks and blowouts happen when the diaper does not fit the baby properly. When the diaper fills up quickly, it is time to choose a bigger diaper size
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