Mother, Baby & Kids

First Year Toddler: Twenty-One-Month-Old Developmental Milestones

An Asian toddler is playing with the wooden blocks in the living room.

While tracking the twenty-one-month-old developmental milestones with your toddler, you will be amazed by his imaginative power in play and dreams.

On top of this, he is going to gradually show his personal interest in his toy and game choice. Thus, simply observe more and you will be able to enjoy quality bonding time with your little one.

Read on for common developmental milestones, handy tips and insights to enhance the growth and development of your 21-month-old.

Twenty-One-Month-Old Developmental Milestones

21-month-old Sleep

Similar to the previous months, your 21-month-old toddler is going to have 13 to 14 hours of sleep every day. While having 11 to 12 hours of sleep during the night time, he is going to enjoy a short nap during the day time for 1.5 to 3 hours.

To ensure your toddler sleeps well during the night time, this is what you can opt for besides establishing bedtime routines.

Involve him in some active play and meaningful activities during the day. Since your toddler has a lot of energy, you can help to funnel his energy into play and movement before he ends his day. With this, he is able to sleep well at night to recharge.

21-month-old Feeding

Though eating nutritious food plays an important role in your little one’s growth, you should never fight with him about food.

Simply offer him a variety of healthy food options and get him to choose what he wants. Looking into his daily feeding proportions, here are some guidance based on different food groups:

  • 3/4 to 1 cup of fruits and vegetables
  • 1/4 cup of grains
  • 3 tablespoons of protein

By serving your toddler with three main meals and two snacks daily, you can equally try out the following ideas to encourage his vegetable intake with ease:

By consuming adequate number of vegetables, your little one will not suffer from constipation while keeping his digestive system on track.

Key Milestones in Growth

How should your 21-month-old toddler grow in terms of weight and height? Here are the averages that you can expect from your twenty-one-month-old toddler.

  • Weight: Around 11.29 kg for a 21-month-old baby girl and 11.57 kg for a 21-month-old baby boy
  • Height: Around 83.57 cm for a 21-month-old baby girl and 85.09 cm for a 21-month-old baby boy

Along with his growth, you might notice that your little one is experiencing some skin issues from time to time. Here are some common skin conditions and how you can make your toddler feels better:

Click here if you wish to learn more from our expert on how you reduce the occurrence of skin issues among toddlers with the right personal care product.

Key Milestones in Skill Development and Senses

Key Milestones in Movement

  • can run and squat
  • can throw a ball underhand
  • can kick a ball forward
  • can walk while dragging a pull-along toy
  • can carry a light toy while walking
  • can stack six blocks

Your 21-month-old toddler can continuously run, jump, walk, hop, climb and even balance himself throughout the day. While you may feel exhausted from running behind him, your little one may not show any signs of fatigue.

By moving constantly, your toddler will be able to build strong muscles, balance and even hand-eye coordination. Besides, your toddler is going to enjoy hide-and-seek nowadays. With his active movement and his understanding of object permanence, he would love to hide things and himself for you to spot during the game.

Alternatively, you can enjoy some outdoor fun with your little one by having some nature-inspired activities:

Key Milestones in Five Senses

  • may know more than 50 words
  • can use two words to make a simple phrase
  • can sort blocks based on shapes and colours
  • can point to the correct body parts
  • consistently imitates new words
  • experiences reduced separation anxiety
  • shows signs of possessiveness over his belongings

As your little one is starting to learn about ownership, avoid pressuring him to share if he is not ready to do it yet. Instead of forcing your toddler to share, here’s what you can do to help him in learning to share with his peers or siblings.

21-Month-Old Toddler Activities

As a proud parent of your 21-month-old, you will never be disappointed by his limitless energy and curiosity. Thus, it is our responsibility then to look for age-appropriate activities and games to keep his focus and allow him to exert his desire for independence.

Here are some exciting activities that can occupy and entertain your toddler while teaching him essential skills and stimulating his little mind:

By having your toddler to try out a variety of indoor and outdoor activities, you can help to create a loving and educational environment for him to thrive. On top of this, he would be able to master crucial skills for building his learning foundation.

Keeping Your Cool While Working Through the Twenty-One-Month-Old Developmental Milestones

While dealing with our hectic workload, it can be very exhausting for us to catch up with our little one’s limitless energy and curiosity. However, we should never let our temper to take over when our toddler is having his occasional tantrums.

Whenever you are on the verge of exploding, simply remember to have some deep breaths. If necessary, get some help from the others to take care of your toddler while you can walk away for a few moments to calm down.

Talk to your toddler then about his inappropriate behaviour and always end it with a hug or a kiss to show your unconditional love.


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