# What is the average head circumference of a 15 month old girl?

## What is the average head circumference of a 15 month old girl?

Data Table of Infant Head Circumference-for-age Charts

Age (in months) 3rd Percentile Head Circumference (in centimeters) 97th Percentile Head Circumference (in centimeters)
12.5 44.136 48.96494
13.5 44.40441 49.25225
14.5 44.64328 49.51712
15.5 44.85646 49.76233

## What is the average head circumference of a 1 year old girl?

18 inches
Head growth between eight and twelve months slows down a bit from the first six months. Typical head size at eight months is 17 1⁄2 inches (44.5 cm) in circumference; by one year, it’s 18 inches (46 cm).

How big is an 18 month old head?

How to measure: 1, 2, 3 steps

Hat Circumference
Age CM Inches
12–18 months 48cm 18.50″
18–36 months 50cm 19.50″
3–5 years 53cm 20.50″

What is the average head circumference of a two year old girl?

At 2 years of age, head circumference in about 70% of infants is above normal population ranges, i.e. above +2 SDS; in about 45% above +3 SDS. At adult ages, head circumference in roughly 45% remain above +2 SDS, in 25% above +3 SDS and is on average 59.8 ±1.9 cm for males and 58.2 ±2.0 cm for females.

### How tall should a 15 month old be?

30.5 inches
At fifteen months, the average girl weighs about 23 pounds (10.5 kg) and is almost 30.5 inches (77 cm) tall; the average boy weighs about 24.5 pounds (11 kg) and is 31 inches (78 cm) tall. Over the next three months, they’ll each gain approximately 1 1⁄2 pounds (0.7 kg) and grow about an inch (2.5 cm).

### What is abnormal head circumference?

Macrocephaly refers to an overly large head. It’s often a symptom of complications or conditions in the brain. There’s a standard used to define macrocephaly: The circumference of a person’s head is more than two standard deviations above average for their age. Or, their head is larger than the 98th percentile.

What size head is a 2 year old?

Infant/Child

Preemie Toddler
Circumference (in.) 9–12 16–18
(cm.) 23–30.5 40.5–46

What is the normal circumference of a baby head?

The average newborn’s head circumference measures about 13 3⁄4 inches (35 cm), growing to about 15 inches (38 cm) by one month.

## How big is a child’s head?

The distance around the baby’s head: The average newborn’s head measures 13 3/4 in (35 cm) Generally, a newborn’s head is about half the baby’s body length in cm plus 10 cm. So a baby that is 18 inches long would be 45.7 centimeters (18 x 2.54).

## Is toddler head too big?

Macrocephaly is the term for an unusually large head. An infant with macrocephaly will have a larger head than most other infants of the same age and sex. In many cases, this condition is benign or harmless. In other cases, it may indicate an underlying medical condition, such as a genetic syndrome or a brain tumor.

What should a 15 month old be saying?

New this month: Speaking volumes By 15 months, the majority (about 75 percent) of children have a vocabulary that consists of “Mama” and “Dada” plus at least three other words, usually nouns, such as “cookie,” “ball,” and “dog.” “More,” and of course the all-time toddler favorite, “No!” are also common early words.