When Do Babies Reach 30 LBS? [Data From Statistical Study]

A baby’s weight is one of the most crucial pieces of information you need. Checking if your baby is growing the way they are supposed to be is the initial reason for tracking their weight. However, that’s not the sole reason. 

Parents want to be ready and get everything before the baby is even born. So, if you don’t know when do babies reach 30 lbs, you can’t get the correct product sizes for your baby. 

Imagine buying a car seat your baby will outgrow within months. To avoid such incidents and ensure that your baby is right on track regarding their weight, let’s see the appropriate weight charts corresponding to age. 

Table of Contents


When Do Babies Reach 30 LBS?

Note that all babies are different and grow at their own pace. Some babies reach 30 lbs a lot faster than others. Another thing to keep in mind is that your baby’s growth becomes comparatively slower after a certain age, which is entirely normal. 

Let’s see some charts to determine whether your baby is on track or not. 

Weight Chart For Baby Girls

Birth17.6 to 21.1 inches5.1 to 9.7 lbs
1 Month19.3 to 22.9 inches6.6 to 12.6 lbs
2 Months20.6 to 24.3 inches8.4 to 15.2 lbs
3 Months21.6 to 25.5 inches9.7 to 17.2 lbs
4 Months22.5 to 26.4 inches10.6 to 19.0 lbs
5 Months23.2 to 27.2 inches11.5 to 20.3 lbs
6 Months23.8 to 28.0 inches12.1 to 21.4 lbs
7 Months24.4 to 28.6 inches12.8 to 22.5 lbs
8 Months24.9 to 29.3 inches13.2 to 23.4 lbs
9 Months25.4 to 29.8 inches13.7 to 24.3 lbs
10 Months25.8 to 30.4 inches14.1 to 24.9 lbs
11 Months26.4 to 30.9 inches14.6 to 25.8 lbs
12 Months26.8 to 31.5 inches15.0 to 26.5 lbs
15 Months28.0 to 33.0 inches16.1 to 28.4 lbs
18 Months29.1 to 34.4 inches17.2 to 30.4 lbs
21 Months30.1 to 35.7 inches18.1 to 32.2 lbs
24 Months31.1 to 37.0 inches19.2 to 34.2 lbs
27 Months31.7 to 37.8 inches20.3 to 36.2 lbs
30 Months32.5 to 38.9 inches21.2 to 38.1 lbs
33 Months33.2 to 40.0 inches22.0 to 39.9 lbs
36 Months33.9 to 40.9 inches22.9 to 41.9 lbs
4 Years36.5 to 44.4 inches26.0 to 49.8 lbs

Weight Chart For Baby Boys

Birth17.9 to 21.4 inches5.1 to 10.1 lbs
1 Month19.8 to 23.3 inches7.1 to 13.2 lbs
2 Months21.2 to 24.8 inches9.0 to 16.3 lbs
3 Months22.3 to 26.1 inches10.6 to 18.3 lbs
4 Months23.2 to 27.0 inches11.9 to 20.1 lbs
5 Months24.0 to 27.9 inches12.8 to 21.4 lbs
6 Months24.6 to 28.6 inches13.5 to 22.5 lbs
7 Months25.2 to 29.2 inches14.1 to 23.6 lbs
8 Months25.8 to 29.8 inches14.8 to 24.5 lbs
9 Months26.3 to 30.4 inches15.2 to 25.1 lbs
10 Months26.8 to 30.9 inches15.7 to 26.0 lbs
11 Months27.2 to 31.5 inches16.1 to 26.7 lbs
12 Months27.6 to 32.0 inches16.5 to 27.3 lbs
15 Months28.9 to 33.5 inches17.6 to 29.5 lbs
18 Months29.9 to 34.8 inches18.5 to 21.3 lbs
21 Months30.9 to 36.1 inches19.6 to 33.1 lbs
24 Months31.8 to 37.4 inches20.5 to 35.1 lbs
27 Months32.3 to 38.2 inches21.4 to 36.8 lbs
30 Months33.1 to 39.3 inches22.3 to 38.6 lbs
33 Months33.7 to 40.3 inches23.1 to 40.3 lbs
36 Months34.4 to 41.2 inches23.8 to 42.1 lbs
4 Years37.0 to 44.5 inches26.9 to 48.7 lbs

What To Do If Your Baby Is Behind The Growth Chart?

Running behind the growth chart isn’t always a thing to worry about. However, there are a few steps you can take if you’re worried about your baby’s weight. A pound here and a pound there does not matter, but you should be monitoring if you think there is a weight issue with your baby.

Consult A Lactation Specialist

If your baby isn’t growing as they should, they may not be getting enough food. Sometimes babies can’t have enough milk according to their necessity and experience low weight. Consulting a lactation specialist can guide you on what to do in this situation. 

Try Massages 

Several studies say that massage can have significant improvements in your baby’s growth. Babies who receive massages tend to gain more weight and become more aware with improved motor skills. 

So, if your baby is behind on the weight chart, don’t forget to give them massages for improvement. 

Proper Nutrition

For babies older than six months, solid food adds nutrition to the diet. Make sure you’re providing the baby with suitable solid food to make them grow better. 

Egg yolks, avocado, banana, etc., are excellent options if you want your baby to gain some weight. 


Frequently Asked Question

Should I be worried if my baby is on the lower end of the table?

Only because your baby is on the lower end does not mean you should get worried. Like I said, all babies have different growth rates, depending on various factors. However, if you feel like your baby should weigh more, you should consult a pediatrician for your peace of mind. 

How much does an average baby weigh at birth?

If you’re having a girl, the weight range is 5.1 pounds to 9.7 pounds. However, if it’s a boy, the weight will range between 5.1 pounds to 10.1 pounds. 

Should I give solid food to my baby if they’re underweight and under six months?

It’s not recommended to give your baby solid food before they turn six months. Pediatricians recommend waiting at least six months before giving babies solid foods. If your baby isn’t growing as they’re supposed to, you can explore other reasons. 

For example, maybe your baby isn’t getting enough food needed for proper growth. Or it may be due to genetic structures. These reasons can’t be solved by providing your baby with solid food. 

Final Words

Parents tend to become anxious at the littlest deviation possible. You need to remember that there’s no fixed weight for babies corresponding to their age. However, you can get an idea about whether your baby is underweight or overweight by comparing the weight within a range. 

You’ll notice that it’s normal for a 21 month old baby to be 30 lbs. In comparison, a 4 year old baby won’t necessarily be 30 lbs. So, if you’re thinking, when do babies reach 30 lbs- the answer will vary in a long range. 

If you’re still not convinced, you can always ask your pediatrician.

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