Average baby height, weight and guideline for choosing a baby carrier
Have you ever heard of a baby's "growth curve"?
This shows estimates of growth by age and age for men and women, and allows you to know how much growth is compared to the national average. In addition to reading the graph, let's also check what kind of baby carrier is suitable for each stage of growth.
What is the growth curve for a baby?
This is a graph of a baby's height, weight, motor function, etc., allowing you to find out the estimated growth rate for each age group by gender. That's exactly what the "Infant Physical Development Curve" listed in the Maternal and Child Health Handbook.
The source is the "Infant and Young Children's Physical Development Survey Report" conducted by the Ministry of Health, Labour and Welfare every 10 years and published.

This graph is expressed as a "percentile".
Percentiles are arranged in order of the smaller data, indicating the percentage that matches the data. The top line on the graph is 97% and the bottom line is 3%, so that means that 94% of the baby values will be included during this time.
The Infant and Young Children's Physical Development Survey Report also includes a list of average values for each month, that is, values that are exactly 50%. For example, the average male at birth is 2.98kg, and 8.01kg for less than 6-7 months.
Reference: Ministry of Health, Labour and Welfare: "Infant and Infant Physical Development Survey"
By recording your actual height and weight measured in the Infant Physical Development Curve graph in the Maternal and Child Health Handbook, you can get an estimate of how well your baby is growing compared to other babies across the country.
What are the numbers to guide you when choosing a baby carrier?
In the data published in the "Infant and Young Children's Physical Development Survey Report," the main thing that has to do with choosing a baby carrier is weight.
Load capacity varies depending on the product. Some items can handle up to 20kg or more, but it seems that a typical baby carrier is usually limited to around 15kg.
Load capacity is clearly stated for each item. For safety reasons, do not use it on children who weigh more than this.
On the other hand, there is a real situation where more and more mothers and fathers find it painful to hold a child for a long time when they weigh about 12 to 15 kg. It varies depending on physical strength and muscle strength, but if the load capacity of moms and dads exceeds the body's load capacity, it can cause injury to your body, so it is important to avoid overdoing it.
If the weight becomes more stressful, it may be a good idea to use a stroller in addition to the situation.
What is the best baby carrier for up to six months of age?
Of course, weight is not the only way to check your baby's growth when choosing a baby carrier. Babies that are born are not well developed in their muscles and bone structure, so care must be taken to avoid unexpected injuries.
Until your neck is completely seated, use a carrier that can be used to hold the baby sideways, or if you are holding the baby vertically, choose one that supports the area around the neck.
The recommended condition for neck movements is around 4 months old, but there are individual differences. If you force yourself to do so while your development is insufficient, it can lead to serious injuries. Observe and assess your baby's condition carefully.
Also, even though the baby's neck has been held back, the baby's body is still growing. To prevent development, it is necessary to frequently check whether the back has a natural C curve and an M-shaped leg spread, so that you can maintain a comfortable posture while holding it.
When purchasing a baby carrier, choose the key points to wrap your butt around your butt and support it without putting any strain on your hips, and to prevent your back or arms from stretching.
What baby carrier is useful for nearly a year old?
At about 7 months old, the muscles around the waist and back also develop, and the lower back will sit. If you can sit on the floor and maintain your posture without having to hold your hands, it is proof that your hips are sitting.
The weight is around 8kg at 7 months old, and by the time the child is 1 year old, an average of around 9kg, exceeding 10kg, so we recommend choosing a highly functional baby carrier that can further reduce the burden on weight. Types with waist belts allow for weight distribution and reduced burden. With the hip seat carrier type, the pedestal (hip seat) supports your child's butt, making it easy to maintain posture and hold them comfortably.
Check points include the stability of the shoulder straps and waist belts, and the cushioning of the hip seat that touches the belly of moms and dads. In addition, the baby carrier is structured to hold the baby near the center of gravity of mom and dad, making it difficult to feel the weight and easy to hold.
Should I buy a new baby carrier as it grows?
The functions required of a baby carrier will vary depending on the period when the body is insufficient and requires various support, and when the body is firm and weight is gaining.
Therefore, there are many mothers and fathers who buy new baby carriers as they grow.
However, it's not a cheap purchase, and it's bulky, so the storage location is a headache. If possible, you'd like to just use one baby carrier, instead of buying a new one.
BABY&Me's BELK-S first set allows you to change the shape simply by switching parts, and can be used from newborns to around the age of four, so we recommend it.
Until your neck is held, you can use a combination of a carrier part that wraps around the baby's upper body and a first waist belt type that gently supports the butt, and after you're sitting on your neck, you can switch the first part to the hip seat and use it as a hip seat carrier.
It can be held up to 20kg as a waist belt type or a hip seat carrier, making it convenient to switch between different uses depending on the situation.
It can also be used as a hip seat alone, making it convenient when you start walking, when you're often hugged, and it can also be used as a side husk before your neck, making it useful for breastfeeding and putting you to bed.
BABY & Me products can be tried on at stores that carry them, and trial rentals and subscription rentals are also available at the official online store, so please feel free to experience the ease of use.