15 Month Old Baby Milestones And Development – New Parents Guide


Your baby is now 15 months old and it is time to visit a doctor for a regular checkup to make sure you’re hitting 15 month old milestones! Be proud of your fabulous sidekick as you will have someone to help you pick out books and throw away the trash. Encourage your child to do as many things as possible on its own to improve her self-esteem and development. 

As your baby continues to develop and grow in a variety of ways you will notice that it acquires new skill sets and abilities. Keep on reading to find out if your baby is hitting those 15 month milestones on time! 

What You Should Know 

  • This is another regular checkup month. You will be reassured that everything is fine with your baby and that it is growing healthily. 
  • Your child will start speaking more clearly. New words besides “mama” and “dada” will start popping up. Help your baby by speaking to eat whenever you can. 
  • First molars will start showing up. This may be painful for some babies and you might need to use something to help your baby to ease the pain, such as a teething necklace
  • Identifying objects and people will be much easier for your little one at this time. Ask her to show you certain parts of the body and wait for the response. 

Important 15 Month Old Milestones 

What are averages measures and weight of a 15 month old? About 22.7 pounds for boys and 21.2 pounds for girls, according to the World Health Organization. When it comes to height, the median height is 31.2 inches for boys and 30.5 inches for girls. 

The doctor will measure your baby’s height, weight, and head circumference at the regular 15-month checkup. 

15 Month Old Skills and Milestones 

You will most likely be asked about the certain 15 month milestones at the checkup to help the doctor get a clearer picture of your baby’s development. There’s a lot of things that are considered “normal” at this age, but don’t be afraid to ask your pediatrician about any concerns you have. 

  • Speech – Usually, babies can say at least one word correctly at 15 months of age. Some toddlers can even say a few words without any problems. Some previous babble sounds like “mama” and “dada” will now start to sound more clearly and new words like “juice” and “dog” are understandable. 
  • Walking – You will notice that your child is now at least taking a few steps without any help. About 50% of babies can walk pretty well at this age. Some that are developing a bit faster is even able to walk backward and run! 
  • Identification – At this age, your baby will most likely start to understand what are everyday objects used for. For example, a baby spoon is for eating and a broom is for sweeping. Some babies also learn the names of their body parts and will point at them if you ask them to show you. 
  • Teething – Be ready for molars as they will probably start to erupt. Cutting teeth is bothersome and painful for some kids. 
  • Behavior – It is an awesome feeling to have a happy and active toddler by your side. But, as you probably already know, they can have their… moments. Some challenging behaviors during this time are separation anxiety, biting, throwing things, and tantrums. 
  • Discipline – You might think that your baby is not behaving properly. Still, at this age, babies don’t know that they’re doing a bad thing. She is just interested to explore the couch by climbing it and color the wall to see what will happen. 

Q: What should my 15 month old be doing?

A: Your baby should be able to say 3-5 words at this age. Understanding and following simple commands are also very common in most 15 month olds. Some babies can walk on their own perfectly fine, but it is also okay if you still need to help your baby a bit. 

Q: Should my 15 month old be talking?

A: According to most of the developmental checklists, babies that are 15 months old should be able to say at least 3 words besides “mama” and “dada”. However, some of these words can still sound like babbling, so don’t be surprised if you still can’t clearly understand what your child is trying to communicate. 

Q: How can I teach my 15 month old to talk?

A: Talk to your child about the things you both use frequently such as “doll”, “juice”, or “cup”. Always name it when you’re having an activity with an item so your baby can remember it easier. Clap your hands and smile when your little one names an item correctly. Ask questions and be supportive. 

Q: How many teeth should a 15 month old have?

A: Developmental checklists have something that’s called a “normal range for the appearance of teeth”. However, when it comes to 15 month milestones, there isn’t an exact number of teeth your baby should have at this age to be considered normal. You can expect up to 8 baby teeth if the child is developing faster. 

Q: How do you know if your 15 month old has autism?

A: Sometimes, babies with autism can be hard to get to look at you. Besides, some babies will rarely share enjoyment and interests with their parents. Even responding to their name can be a problem. Lack of gestures and sounds can also be a sign of autism. Talk to your pediatrician if you notice these symptoms. 

Q: How do you entertain a 15 month old?

A: The best thing you can do to entertain your toddler is to play with it as much as you can. Use toys, walk them in a stroller, or just play toddler games. Remember to take them to the park and let them socialize with other babies to allow your child to build self-esteem. This will help a lot to hit those 15 month old milestones! 

15 Month Old Food

Having a healthy diet is one of the more important 15 month old milestones. However, this is the period when your baby might become pickier about the food you provide. This is normal and you need to find the patience to explain to your child what is good for her. 

Keep giving your baby 3 meals and 2 snacks during the day. Make sure you have a variety of food available at every moment – protein, dairy, grains, fruits, and vegetables. One of the 15 month milestones is to try to get your baby to intake at least 40 calories for every inch of her height. 

Q: How much milk should my 15 month old drink?

A: Doctors suggest that 2 cups of milk is the optimal amount for toddlers. However, you can offer up to 20 oz of milk during the day if your child is having enough activity and is eating properly. Active kids need more energy and those extra couple of ounces can help a lot. 

Q: What should my 15 month old be eating?

A: To hit those important 15 month milestones, make sure your baby has a variety of food in her diet. At this age, your baby can eat almost anything – eggs, chicken, pasta, rice, peanut butter, apples, oranges, broccoli, carrots, and many more. Offer your baby something new each day to see how she reacts.  

15 Month Old Sleep Schedule and Routine 


Your 15- month-old is probably settled into a daily sleeping schedule by this time. Still, occasional illness, desire to play all day and teething will sometimes affect the routine and you will have to calm your baby down. 

This is why it is really important to set up the room for your baby before you get your baby to sleep. Keep in mind that toddlers need to sleep optimally between 11 and 14 hours during the day. Also, this is the time when your baby will most likely start shifting from two naps a day to just a single one. 

Babies have nightmares too. But, the difference between adults and them is that they can’t tell whether if it is real or just a dream. This can lead to waking up at night and you need to be ready for middle-of-the-night reassuring. I 

Q: Why is my 15 month old waking up at night?

A: The most common reasons why your toddler is waking up at night are stress, anxiety, and fear. They sometimes feel anxious during the day and that has a negative effect on their sleep. New babysitter, potty training, and even a new sibling can induce anxiety. Be there for your baby to reassure her everything is fine. 

Q: How much should a 15 month old sleep?

A: Babies will usually sleep 11-12 hours during the night and about 2 hours during the day at this age. However, as your baby gets introduced to new things, items, and people, it may develop fears and anxious situations. This may impact the quality of sleep and you will have to help your baby get through the night. 

15 Month Old Activities 

Your little one is pretty fun to play with by now. There are a lot of interesting activities you can do together for better development and quality bonding time such as:

  • Storytime – Babies learn to turn pages at this age and might have favorite books, make them more interesting by reading to her. 
  • Use crayons – Coloring is a very popular activity among toddlers as it allows them to express themselves easier. 
  • Play ball – Bouncing and rolling a ball together is really fun at this age. 

When Should You be Worried 

As your baby develops it might reach certain milestones faster or slower than other babies. This is perfectly normal and you shouldn’t be worried. Still, make sure you speak to your pediatrician if you notice these symptoms: 

  • Lack of empathy 
  • Clumsiness 
  • No communication
  • Stiff head
  • No appetite 

My Babies Planet Overview

You will know whether your baby is hitting those 15 month old milestones at the regular doctor checkup. New activities and better coordination will make everything more fun for your baby. But, teething and nightmares can cause sleeping problems sometimes. Rejecting food is another minor problem that you might occur. Still, this will soon go away and you will be back on track with your fabulous sidekick!  

Hello Mother's and Father's of the world. My name is Sarah Nielsen is this is my passion MyBabiesPlanet.com, as I am a mother of two beautiful babies and they are my world. Also I love blogging and sharing my experiences of what has worked for me when raising my kids. When I'm not juggling the madness at home, or working on my blog. You will find me product researching and keeping the site freshly updated with the latest baby gear and helpful articles for my readers!