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7 Month Old Baby: Developmental Milestones

Learn everything you need to know and expect from your 7 month old baby. This post will discuss the development, milestones, sleep patterns, and feeding advice.

Physical Development

How much should a 7-month-old-be? A 7-month-old baby boy should weigh between 14 to 22 pounds and a girl should be around 13 to 21 pounds.

What should the height of a 7-month-old be? The height of a baby boy should be anywhere from 25 to 28 inches and a girl should be 24 to 28 inches.

How much should their head sized be?  The head size of a baby boy should be from 16 to 18 inches and girl should be15 to 17.

What is the respiratory rate of a 7-month old?  Both the boy and girl respiratory breath should be 25 to 40 breaths per minute.

What is the heart rate of a 7-month-old? The heart rate of a 7 month old baby should be 80 to 120 beats per minute.

What Should Your Baby Be Doing At 7 Months?

Motor Skills

The motor skills are quickly developing. The babe now is able to creep, scoot around, and roll over.  At times, babies do start crawling at 7 months. 

The baby will start bouncing when help in the upright position. This helps make the baby legs strong and help him prepare in the next months when he starts walking.


During 7 months old the moro reflexes should have completely disappear.

Communicative Development

The baby at 7 months old starts to understand communication skills by your tone of voice. 

The baby now starts to communicate by laughing, giggles, and even squeals.  The babbling skills keep increasingly and now the words like mama are sounding more like actual words.

Cognitive and Behavioral Development

Majority of babies go though separation anxiety since they now can fully understand the permanence of a person.  

At 7 months old the baby starts to become a bit clingy. Every time you leave the baby will start to go through separation anxiety.

Sensory Development

How Clearly Can A 7-Month-Old-See?

The baby eyesight now has drastically improved.

How Well Can A 7-Month-Old Hear?

The babies hearing keep increasing being able to pick up on random noises.

What Feeding Schedule Does A 7-Month-Old Follow?

How much baby food should a 7-month-old eat?

Formula milk and breast milk still plays an important role at 7 months old. 

Some babies may be eating up to 8 ounces of solid foods between 2-3 meals during a day. 

During mealtime the feed breast milk or formula is first given before the solid food. Pay attention to any food allergy symptoms.

How Much Milk Should A 7-Month-Old Drink?

Since the baby has begun eating solids the milk intake is reduce.  Any babies drinking formula may drink about 600 ml of milk a day.

What Sleep Schedule Does A 7-Month-Old Follow?

Majority of seven-month old baby sleep around nine to eleven hours a night. During the day, the baby takes two naps.

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