How Much Should a 6-Month Old Weigh?

Question

I have a now seven-month-old boy, who started crawling four days before his seven-month birthday. At six-month appointment, he weighed 17 pounds and 14 oz. I am guessing he weighs in the 18 pound, couple of oz's range. Is this normal or is it too low? I hear of some six-month-old babies that are 20 pounds or more. He is rather long, maybe about 28 inches plus.
Ashley

Dr. Greene's Answer

Ashley, healthy babies come in many shapes and sizes. At six months, anywhere between 14 and 21 pounds is considered a healthy weight for boys. (Although, five percent of healthy boys weigh less than 14 pounds and five percent of healthy boys weight more than 21 pounds). Healthy boys who are 28 inches long, whatever their age, usually weigh 16 to 22 pounds. So 17 or 18 pounds is a great weight for an active boy to be!

Most adults who are reading this would rather they were on the slim, active side of their ideal weight range! Ashley, it sounds like you have a wonderful son, off to a great start. And it sounds like your crawling son has some exciting adventures and discoveries ahead.

Last medical review on: September 11, 2010
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Dr. Greene is a practicing physician, author, national and international TEDx speaker, and global health advocate. He is a graduate of Princeton University and University of California San Francisco.
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Recent Comments

Edokhin,

At 6months old, it’s important for babies to work on the skills they will need longterm for eating solid foods and they learn to enjoy the taste of real, whole foods. But it’s not so important they get a lot of their calories from solids.

Dr. Greene suggests offering a variety of foods to babies between 6 months and a year old, but not forcing them to “take another bite”. Here is a link to his Quick Guide for Starting Solids.

My baby boy is 6months. He weighs 8.4kg. He can sit, crawl and stand while holding on a support. I’m finding it a bit daunting to extend his feeding from breast milk to solid. He is recalcitrant when it comes to feeding on solids…

Edokhin,

At 6months old, it’s important for babies to work on the skills they will need longterm for eating solid foods and they learn to enjoy the taste of real, whole foods. But it’s not so important they get a lot of their calories from solids.

Dr. Greene suggests offering a variety of foods to babies between 6 months and a year old, but not forcing them to “take another bite”. Here is a link to his Quick Guide for Starting Solids.

My baby boy is now on 9th of dec becomes 6 months old and weights 10.50 kg . He started crowling by help and he makes very nice sounds and loves to eat and drink . In this duration from newborn to naw as he is 6 months old i have fed him just with breast milk now started some frutes and light vegtable foods. But is pushing all the time hech becomes red and weats while pushing . I am too worry .

Rajesh,

The healthy weight of a baby is of much concern to parents. There are many factors to consider — Was the child born prematurely? What was her birth weight? What was the child’s birth length? Has she gained weight and length? Or is she barely holding her own? All these questions must be considered before determining a “normal” weight for a child.

With that said, 6.7 pounds is low for most 6-month-old babies. If this were my child, I would have her examined by a doctor to make sure she is on track.

I hope that helps.
Best, @MsGreene
Note: I am the co-founder of DrGreene.com, but I am not Dr. Greene and I am not a doctor. Please keep that in mind when reading my comments and replies.

My grand daughter 6 months weight is 6.7,is this normal?

Rajesh,

The healthy weight of a baby is of much concern to parents. There are many factors to consider — Was the child born prematurely? What was her birth weight? What was the child’s birth length? Has she gained weight and length? Or is she barely holding her own? All these questions must be considered before determining a “normal” weight for a child.

With that said, 6.7 pounds is low for most 6-month-old babies. If this were my child, I would have her examined by a doctor to make sure she is on track.

I hope that helps.
Best, @MsGreene
Note: I am the co-founder of DrGreene.com, but I am not Dr. Greene and I am not a doctor. Please keep that in mind when reading my comments and replies.

Truoseha,

Thanks for writing in.

A baby’s normal weight at any given age is based on a combination of factors: Birth weight, height, and rate of growth.

Dr. Greene says, “In the first four to six months, a baby typically doubles her birth weight. She will triple her birth weight by the time she is a year old. Maximal brain growth also occurs during the first six months of life. The brain grows as much during a child’s first year as it will during the entire rest of her life.”

I hope that helps.
Best, @MsGreene
Note: I am the co-founder of DrGreene.com, but I am not Dr. Greene and I am not a doctor. Please keep that in mind when reading my comments and replies.

My baby girl is now 6 months old her weight is 6.3 kg is it ok ??

Truoseha,

Thanks for writing in.

A baby’s normal weight at any given age is based on a combination of factors: Birth weight, height, and rate of growth.

Dr. Greene says, “In the first four to six months, a baby typically doubles her birth weight. She will triple her birth weight by the time she is a year old. Maximal brain growth also occurs during the first six months of life. The brain grows as much during a child’s first year as it will during the entire rest of her life.”

I hope that helps.
Best, @MsGreene
Note: I am the co-founder of DrGreene.com, but I am not Dr. Greene and I am not a doctor. Please keep that in mind when reading my comments and replies.

Ashley,

To determine if a baby is underweight, you must look at weight and length AND determine if he is growing at a steady rate or if he is not gaining weight over time. Weight alone cannot determine if there is a problem.

I hope that helps.
Best, @MsGreene
Note: I am the co-founder of DrGreene.com, but I am not Dr. Greene and I am not a doctor. Please keep that in mind when reading my comments and replies.

Hello
My baby is 6months and weighs 6kg and its regarded as under weight is he in trouble of any sickness cause am worried

Ashley,

To determine if a baby is underweight, you must look at weight and length AND determine if he is growing at a steady rate or if he is not gaining weight over time. Weight alone cannot determine if there is a problem.

I hope that helps.
Best, @MsGreene
Note: I am the co-founder of DrGreene.com, but I am not Dr. Greene and I am not a doctor. Please keep that in mind when reading my comments and replies.

Hi Wazhma,

Is your child breastfed or formula fed? If kids can sit up alone and are formula fed, Dr. Greene recommends starting solids as early as four months. Breastfed babies get a variety of flavors and lots of micronutrients from breastmilk so they can start a little later. Here is Dr. Greene’s Quick Guide to Starting Solids. This should help you on your journey.

Note: I am the co-founder of DrGreene.com, but I am not Dr. Greene and I am not a doctor. Please keep that in mind when reading my comments and replies.