Baby Height Chart Singapore: The Best Growth Tracking Guidelines

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Tracking a newborn’s height is a crucial part of monitoring their health and development. As we want to help Singaporean parents take over this process easily, we provide guidelines to measure and read baby height charts in this blog post.

A baby height chart helps you understand whether your little one’s length or height is growing steadily for their age. Rather than focusing on one single number, it is more helpful to observe your baby’s growth pattern over time:

• Baby weight
• Head circumference
• Baby height

Let’s dive into our baby height chart guidelines and see whether your little one meets healthy developmental milestones.

SingHealth’s Growth Standards

Before your baby begins standing and walking, their height is measured as “length.” This is the measurement from the top of their head to the bottom of their heel while they are lying down.

HealthHub reveals that the average length of a Singaporean baby ranges from 45 to 54 cm^[1]. During the first three months of life, the average length gain is 10–11 cm (apply for children breastfed from birth)^[2]. This consistent growth highlights the importance of proper nutrition during the early months, as it sets the foundation for healthy development.

To support parents in tracking their baby’s development, KK Women’s and Children’s Hospital (KKH) has provided a baby growth table for Singapore babies from birth up to 24 months:

KKH’s Growth Advice

*Apply for children breastfed since birth

Nonetheless, be aware that every baby is unique, with their height potential largely determined by various factors. Healthy babies can thrive in a wide range of sizes, and it’s natural for growth patterns to differ from one child to another.

WHO’s Length/Height-for-Age Charts

Besides SingHealth’s growth standards, there are two main types of length/height-for-age charts: percentile charts and Z-scores, both published by the World Health Organization (WHO).

These growth standards are based on data from healthy, exclusively breastfed infants across six countries and five continents^[3]. These charts help you answer one common question: What is a normal height for a baby? 

How to Use a Baby Height Chart?

To read a baby height chart, you’ll need three details: your baby’s age, sex, and current length or height. Once you have these, find your baby’s age along the bottom of the chart and match it with their measurement on the side.

The curve your baby falls closest to shows their percentile or Z-score range. This does not mean your baby has “passed” or “failed” a growth test. It simply gives you a clearer picture of how your baby is growing compared with other children of the same age and sex.

For a more reliable view, record each measurement and look at the trend over time.

Percentiles Baby Height Chart

Percentile height charts are the most commonly used type of growth chart. These charts display growth in percentiles, allowing parents to easily compare their baby’s height to other babies of the same age.

Elements of a percentile chart include the following:

• Vertical Axis (Length) represents the baby’s length in centimetres.
• Horizontal Axis (Age) indicates the baby’s age in completed months and years.
• Percentiles show how a baby’s height compares to a reference population.

Once you understand these basics, reading a baby’s height and weight chart becomes a simple and intuitive process.

Below is WHO’s standard length/height-for-age percentile chart for boys below 6 months:

This chart lets you know whether your little one’s growth falls within the expected range for their age. In this way, parents can identify potential growth concerns early.

For example, a 5-month-old baby boy is 60 cm in length. From the WHO’s height chart, we know that this baby has surpassed the 97th percentile. That means he is taller than 97% of boys his age, indicating he is significantly above average in height for his age group.

Z-Scores Baby Height Chart

Another way to track a Singapore baby’s height and weight is by using the Z-score chart. Similar to the percentile height chart, Z-scores are statistical measures that compare a baby’s length or height to a reference population.

The difference is that the Z-score chart uses Median, Positive Z-scores, and Negative Z-scores:

• The median (0 Z-score) is the average length for a baby at a specific age in the reference group.
• Positive Z-scores (+2, +3) mean the baby is taller than the median for their age.
• Negative Z-scores (-2, -3) mean the baby is shorter than the average height for children of the same age.

Below is WHO’s standard length-for-age z-scores chart:

According to these charts, a 3-month-old girl whose length falls between 48 cm and 53 cm is considered to have normal growth. Meanwhile, a height below 48 cm at 3 months may indicate stunted growth.

Health professionals and parents can use Z-score charts to monitor growth and detect any deviations from normal growth patterns, helping decide if intervention is necessary. The aim is to maintain a baby’s height within the -2 to +2 Z-score range for healthy development.

However, it’s important to remember that each baby’s growth journey is unique. If you are looking for personalised advice, consult your child’s health nurse or doctor.

How to Measure Your Baby?

Doctors recommend measuring a child’s height and weight regularly:

• Every 3-4 months for children under 2 years
• Every 6-12 months for children over 2 years

If you’re concerned about your baby’s growth, you can adjust how often you check, but stick to measuring no more than once every 3 months^[4].

Typically, doctors will measure your baby’s growth during regular check-ups. They have specialised tools and techniques to monitor your baby’s development and ensure everything is on track.

However, if you’d like to track your baby’s length between visits, you can measure it at home by following these simple steps:

For children under 2 years (supine length):

• Step 1: Use a length board or mat placed on a flat, stable surface, like a table. Lay the baby on their back, ensuring they are straight along the board, with shoulders touching the board and their spine not arched.
• Step 2: Remove the child’s nappy/diaper and footwear before measuring.
• Step 3: Use a measuring tape to measure your little one’s length from the top of their head to the bottom of their heel.
• Step 4: Record your baby’s length to the nearest tenth of a centimetre or inch. Measure 2-3 times and take the average for the most accurate result.

Note: Since babies often bend their knees, it may be helpful to have another person gently straighten their legs while you take the measurement.

For children over 2 years (standing height): 

• Step 1: Use a stadiometer or a rigid upright measure with a T-piece placed at a right angle between a flat floor and a wall.
• Step 2: Have the child stand with their back straight, and the heels, buttocks, shoulders, and head touch the vertical surface.
• Step 3: Get on eye level with the child to ensure precise measurements. Measure 2-3 times and calculate the average.

Note: Standing height is typically about 0.7 cm shorter than supine length in young children, so adjust the measurements accordingly if needed^[4].

When Should Parents Speak to a Doctor?

There’s no need to stress if your child’s height or weight doesn’t align exactly with the 50th percentile or 0 Z-score at any given time. Infants, especially during the first 6 to 12 months, can fluctuate between percentiles. This is often related to growth spurts that occur at predictable times throughout their first year. Also, children’s height and weight may not always follow the same percentile, but will typically grow along or between percentile lines^[5].

You may want to speak with your child’s doctor if:

• Your baby’s growth suddenly drops across percentile lines
• Your baby is not feeding well or seems unusually tired
• Your baby’s weight, height, and head circumference are all slowing down
• Your baby was born prematurely or has an existing medical condition
• You feel something is not right, even if the chart looks normal

Growth charts are helpful tools, but they do not replace professional advice. A doctor can look at your baby’s full health history, feeding pattern, family height, and development before deciding if further checks are needed.

Ultimately, avoid comparing your baby’s growth to that of other children. The most essential thing is to ensure that your baby is growing steadily during their first year and continues to thrive throughout childhood.

What Parents Can Do to Support Healthy Growth

Healthy growth is supported by many everyday habits, including enough sleep, regular feeding, safe movement, and a nurturing environment.

Nutrition also plays an important role, especially during the early years when children are growing quickly. If you’d like to understand this better, check out our guide on the nutrients children need for healthy height growth and how to choose the right nutritional support for children’s healthy development.

Support Your Baby’s Growth with Connection and Care

Supporting your baby’s development doesn’t require a strict routine, but consistency, connection, and care make a big difference. Here are some simple practices to support your baby’s natural growth and development every day:

• Skin-to-skin contact regulates your baby’s heart rate and reduces stress.​
• Baby massage improves circulation, sleep, and bonding.​
• Tummy time builds core strength and motor skills.​
• Use of gentle products helps protect delicate skin and avoid irritation.
• Safe sleep ensures your baby gets enough rest for growth and brain development.​
• Gentle play encourages sensory exploration and curiosity.​
• Hydration keeps the body functioning properly, especially during growth spurts.

FAQs

1. Does baby length correlate with height?

Yes, a baby’s length at birth is closely correlated to their adult height and is actually a stronger predictor of adult height than birth weight. However, a baby’s size at birth doesn’t always determine how tall they will grow as an adult^[6].

2. What is the average height of a child in Singapore?

The average length of a Singaporean baby ranges from 45 to 54 cm^[1].

3. Is the 50th percentile the healthiest?

Not necessarily. The 50th percentile simply means a baby is around the middle of the reference group. A baby on the 15th or 85th percentile can also be healthy if they are growing steadily and developing well.

4. Should I measure my baby every week?

Weekly measuring is usually not necessary and may cause unnecessary worry. For most children, regular check-ups and occasional home measurements are enough. If you have concerns, follow your doctor’s advice on how often to measure.

5. Can nutrition support my child’s height growth?

Yes, balanced nutrition supports normal growth and development. Protein, calcium, vitamin D, zinc, and other nutrients all play important roles. However, nutrition should support your child’s natural growth pattern, not be used to force faster growth.

Disclaimer: This guide is for informational purposes only and should not be used to diagnose health conditions or make changes to medical treatments. Always consult with your healthcare professional for advice.