Diaper Size Calculator
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So, you are blessed with a child and now you are searching for the diaper size for your new child, right? Well, you are at the right place as we have created a tool for you that will help you find your newborn diaper size easily.
We have created a diaper size calculator for parents like you who are recently blessed with a newborn baby or if your child is less than 36 months old.
We know how frustrating it is to find the newborn diaper size if you are the new parents of your first child. As you don’t have any experience in finding the newborn diaper size, right?
How to Use Our Diaper Size Calculator?
Using our diaper size calculator is very easy. All you have to do is just select some inputs and our calculator will do the rest.
Here is how to calculate diaper size by weight of your newborn below;
- First, you need to select the age of your baby. If it is recently born, you can select newborn.
- Now, select the number of days you are planning to buy these diapers (and how long they should last).
- Now, to correctly find the newborn diaper size, you have to select the weight of the baby.
That’s it, by selecting all these 3 inputs, you will be able to easily find the newborn diaper size by weight and also our calculator will show you how many diapers you will need for the days you have selected during the calculation process.
Diaper Size Chart
Although we have created a calculator that you can use, if you want to see the diaper size chart by weight, here it is.
This chart will tell you the diaper size of your baby as per his/her weight because diaper sizes are actually calculated by the correct weight of the baby.
| Baby’s weight | Diaper size |
|---|---|
| <= 10 lbs | Newborn |
| 8–14 lbs | 1 |
| 12–18 lbs | 2 |
| 16–28 lbs | 3 |
| 22–37 lbs | 4 |
| More than 27 lbs | 5 |
| More than 35 lbs | 6 |
| More than 41 lbs | 7 |
How Many Diapers Does Your Newborn Need in a Day?
Now, that you have found your newborn diaper size by using our calculator or diaper size chart, knowing how many diapers your newborn needs in a day is also good.
Here, we have given a detailed chart that will tell you the number of diapers your newborn needs per day based on his/her age.
| Age in months | Number of diapers per day |
|---|---|
| 0–1 | 10–12 |
| 1–4 | 8–10 |
| 3- 8 | 8–9 |
| 5–24 | 6–7 |
| 18–36 | 5–7 |
When to change diaper size?
Diaper size changes with the age of the baby. As your baby grows, his/her diaper size will grow eventually too. You need to keep in mind that if you are using a diaper size (suppose 1) and your baby is feeling itchy, or redness in the area or crying after wearing the diaper, you need to change the size.
Also, if your newborn is weighed between 8–14 lbs and you are using diaper size 1, you need to change your diaper size if the weight of your baby increases. Refer to our chart above to find the size accordingly.
Frequently Asked Questions (FAQs)
What size diaper for 1-year-old?
If your baby is 1 year old, you need to find the weight of the baby as the diaper size will be calculated based on the weight rather than years. You can expect size 3: for babies weighing 16-28 pounds (7-13 kg) or size 4: for babies weighing 22-37 pounds (10-17 kg).
What size diaper for a 2-year-old?
As we told you above, calculating the weight of the baby is a good way to calculate the diaper size. However, a 2-year-old baby generally wears a size 5 diapers. Sometimes, they also wear size 4 if they are on the lighter side or even size 6 if they’re larger.
What size diaper for 3-month-old?
If your baby is 3 months old, the suggested diaper size is size 2 diapers, which are designed for babies weighing 12-18 pounds (5-8 kg).
How to know when to change diaper size?
It is very important to change the diaper size as your baby grows. You need to check the weight of your baby every month and if the weight is the upper limit of the current size, it may be time to move up. Other things you can check are leaking of the diaper, red marks, difficulty fastening, diaper bulkiness, or a change in activity level.
What size diaper for 6-month-old?
If your baby is 6 months old, the suggested diaper size is size 3 diapers, which usually fits babies weighing 16-28 pounds (7-13 kg).
Disclaimer: Please note that the sizes provided by our diaper size calculator may not perfectly match the sizing conventions of all clothing stores and brands.
Sizes can vary between manufacturers and collections, so we recommend using this tool as a guide and checking the specific size charts of the store or brand you are purchasing from for the most accurate fit.