Developmental Milestones at 18 Months–3 Years: Early Signs of Delays & Free Checklist
Is Your Toddler Meeting Developmental Milestones?
Between 18 months and 3 years, children develop new skills in language, movement, learning, and social interaction.
Some children begin talking early, while others need more time. The same applies to walking, playing, following instructions, and everyday activities.
Understanding developmental milestones can help you recognize your child's progress and notice when they may need additional support.
This free developmental milestones checklist for children ages 18 months to 3 years helps you:
Observe your child's development across different skill areas
Recognize possible signs of developmental delays
Keep track of skills your child has developed or is still learning
Prepare questions for your child's pediatrician
⬇ Download the Free Milestone Checklist (18 Months – 3 Years)
Developmental Milestones at 18 Months–3 Years
Between 18 months and 3 years, toddlers make important progress in communication, movement, thinking, and social skills.
Developmental milestones describe skills that most children, approximately 75% or more, can demonstrate by a certain age, according to the Centers for Disease Control and Prevention (CDC).
The following examples can help you understand what to expect as your child grows.
Around 18 Months
Communication: Tries to say three or more words besides "mama" or "dada" and follows simple one-step instructions without gestures.
Movement: Walks independently, scribbles, and climbs on and off furniture without help.
Learning: Copies familiar activities, and plays with toys in simple ways.
Social Development: Points to show something interesting and looks at books with an adult.
Around 2 Years (24 Months)
Communication: Combines at least two words, such as "more milk," and points to familiar body parts when asked.
Movement: Runs, kicks a ball, walks up a few stairs with or without help, and eats with a spoon.
Learning: Explores switches, buttons, and simple toys and uses more than one toy during play.
Social Development: Notices when others are upset and looks to a familiar adult for guidance in new situations.
Around 30 Months (2½ Years)
Communication: Says about 50 words, combines words into short phrases with action words, and names familiar objects in books.
Movement: Jumps with both feet off the ground and turns book pages one at a time.
Learning: Follows two-step instructions, uses objects for pretend play, and recognizes at least one color.
Social Development: Plays near other children, sometimes joins their play, and follows simple routines when asked.
Around 3 Years (36 Months)
Communication: Participates in short back-and-forth conversations, asks simple questions, and tells others their first name when asked.
Movement: Uses a fork, strings large beads together, and puts on some clothing independently.
Learning: Draws a circle when shown how and responds to warnings about dangers such as hot objects.
Social Development: Notices other children and joins them in play.
Remember: These milestones are general developmental guides. Children develop at different rates, and reaching a milestone later than expected does not automatically indicate a developmental disorder. However, missing milestones or losing previously acquired skills should be discussed with a healthcare professional.
Early Signs of Developmental Delays at 18 Months–3 Years
Developmental delays can affect communication, movement, learning, or social interaction.
Some signs become noticeable as children grow and are expected to develop more complex skills.
The age at which a behavior occurs is important. A skill that is still emerging at 18 months may be expected by age 3.
Communication and Language
Possible signs to discuss with your child's pediatrician include:
Not trying to say at least three words besides "mama" or "dada" by 18 months
Not combining at least two words by 2 years
Not using around 50 words by 30 months
Difficulty following simple instructions expected for the child's age
Not participating in short back-and-forth conversations by 3 years
Learning and Cognitive Development
Limited interest in exploring or using toys in expected ways
Not copying familiar activities by 18 months
Not using objects for simple pretend play by 30 months
Difficulty following two-step instructions by 30 months
Not drawing a circle when shown how by 3 years
Motor and Physical Development
Not walking independently by 18 months
Not running or kicking a ball by 2 years
Not jumping with both feet off the ground by 30 months
Difficulty using everyday objects, such as a spoon or fork, at the expected age
Not beginning to put on some clothing independently by 3 years
Social and Emotional Development
Not pointing to show an adult something interesting by 18 months
Not looking to a familiar adult for guidance in new situations by 2 years
Limited interest in playing near other children by 30 months
Not joining other children in play by 3 years
Losing previously developed communication or social skills at any age
Important: A single behavior does not confirm a developmental delay. Tantrums, frustration, and difficulty with transitions can be common during toddlerhood. Concerns should be considered alongside your child's age, overall development, and individual circumstances.
How to Support Your Toddler's Development at Home
Everyday activities provide opportunities for toddlers to practice new skills. You do not need expensive toys or complicated learning materials.
Short, playful activities that match your child's interests can help support their development.
Encourage Speech and Language
Name everyday objects while playing, eating, or getting dressed.
Read picture books and talk about what you see.
Expand on your child's words. If they say "car," you might say "red car."
Sing familiar songs and encourage your child to join in.
Give your child time to respond when you ask a simple question.
Support Fine Motor Skills
Build towers using large blocks.
Scribble with chunky crayons.
Practice using a spoon during meals.
Turn pages in sturdy picture books.
Play with large, age-appropriate stacking and sorting toys.
Encourage Gross Motor Development
Walk and run together in safe spaces.
Practice rolling and kicking a ball.
Create simple obstacle courses with cushions.
Encourage climbing on age-appropriate playground equipment.
Dance and move to music.
Develop Thinking and Problem-Solving Skills
Sort objects by color or shape.
Practice simple puzzles.
Use toy animals, dolls, or pretend food for imaginative play.
Give simple one-step instructions, gradually adding another step when your child is ready.
Encourage your child to explore how toys and everyday objects work.
Support Social and Emotional Development
Name feelings during everyday situations.
Practice taking turns during simple games.
Encourage play near other children.
Encourage interaction with other children through play, shared activities, and simple turn-taking games.
Use familiar routines to help your child anticipate daily activities.
Offer comfort and support when your child becomes overwhelmed.
Tip: Keep activities short and enjoyable. Follow your child's interests and adjust activities to their abilities.
More Playful Learning Activities for Your Toddler
Looking for more ways to support your child's development through play?
The Hands-On Learning Adventures book series offers activities for speech and language, fine and gross motor skills, sensory development, executive functioning, and expressing feelings. Activities can be adapted to your child's abilities and interests.
Explore the Hands-On Learning Adventures Book Series
Meet Zolita, the Dreamy Witch with Hooves! Through colorful illustrations, rhymes, and imaginative stories, children can explore animals, colors, numbers, and early learning concepts.
Discover the Zolita Children's Book Series
The Little Fox and Gorilla interactive book series combines playful stories with hands-on activities. Children can explore drawing, cutting, gluing, and other creative learning activities that encourage fine motor development, coordination, and imagination.
Explore the Little Fox and Gorilla Interactive Book Series
Choose books and activities that match your child's age, interests, and developmental abilities. Younger toddlers can enjoy pictures and stories with an adult, while some interactive activities are more suitable for older children.
When to Seek Professional Advice About Developmental Delays
Children reach developmental milestones at different ages, but some differences may indicate a need for further evaluation.
Speak with your child's pediatrician if:
Your child is missing one or more expected developmental milestones.
Your child has lost skills they previously demonstrated.
You notice persistent difficulties with communication, movement, learning, or social interaction.
You are concerned about your child's development, even if you are unsure which milestone is affected.
Your pediatrician can discuss your concerns and recommend developmental screening or additional evaluation.
How to Request Early Intervention Services
In the United States, families can request an evaluation through publicly funded programs.
For children under 3 years:
Parents can contact their state's early intervention program directly to request an evaluation. A pediatrician's referral is not required to make contact.
For children ages 3 and older:
Parents can contact their local public school district to request an evaluation for preschool special education services, even if their child is not enrolled in public school.
Eligibility for services depends on the evaluation and applicable program requirements.
Download the Free Developmental Milestones Checklist (18 Months–3 Years)
Would you like an easy way to keep track of your toddler's development?
The free printable developmental milestones checklist for ages 18 months to 3 years helps parents observe age-related skills in:
Speech and language development
Learning and problem-solving
Fine and gross motor skills
Social and emotional development
Use the checklist to record your observations, recognize skills your child is still developing, and prepare for conversations with your child's pediatrician.
Download Your Free Developmental Milestones Checklist (PDF)
This checklist is intended for developmental observation. It is not a diagnostic or standardized developmental screening tool.
Every child develops at their own pace. Not reaching a milestone does not necessarily mean a child has a developmental disorder.
However, if your child is missing expected milestones, loses skills they previously demonstrated, or you have concerns about their development, seek professional advice.
This checklist can help you organize your observations and prepare questions for your child's pediatrician.
Based on developmental milestone information from the Centers for Disease Control and Prevention (CDC). This checklist is not an official CDC publication.
Frequently Asked Questions About Developmental Milestones
What developmental milestones should an 18-month-old reach?
By 18 months, most children walk independently, try to say at least three words besides "mama" or "dada," follow simple one-step instructions without gestures, and point to show something interesting.
How many words should a 2-year-old say?
By age 2, most children combine at least two words, such as "more milk." By 30 months, most children say around 50 words and begin using short phrases that include action words.
What are possible signs of developmental delays in toddlers?
Possible signs include not meeting expected language or movement milestones, difficulty following age-appropriate instructions, limited development of play skills, or losing previously acquired abilities.
These signs do not automatically indicate a developmental disorder, but they are reasons to discuss concerns with a healthcare professional.
Can a toddler catch up after a developmental delay?
Some children make progress over time, especially when they receive support suited to their needs. The outcome depends on the child's individual development and the cause of the delay. An evaluation can help identify which services may be useful.
What should I do if my 3-year-old is not talking much?
Speak with your child's pediatrician and ask about developmental and speech-language evaluation. A hearing evaluation may also be recommended. Children who are 3 or older may be eligible for an evaluation through their local public school district.
Is this developmental checklist a diagnostic test?
No. This checklist is designed to help parents observe developmental skills and organize their concerns. It cannot diagnose developmental delays, autism, ADHD, or other developmental conditions.
Continue Exploring Your Child's Development
Developmental milestones change as children grow. Explore our related resources for additional guidance.
Explore More Helpful Checklists
Neurodivergence Overview – Learn about neurodivergent traits, understand differences in thinking, learning, and behavior, and access a general neurodivergence checklist.
Autism Checklist for Children- Challenges in social communication, behavior, and restricted interests, often with unique sensory and learning styles.
ADHD Checklist for Children – Signs, traits, and practical strategies for attention, focus, and impulse control.
Dyslexia Checklist for Children– Reading, decoding, and language-related traits.
Dyscalculia Checklist for Children – Number sense, math skills, and problem-solving differences.
Dysgraphia Checklist for Children – Handwriting, fine motor, and written expression challenges.
Dyspraxia Checklist for Children – Coordination, motor planning, and daily activity support.
Sensory Processing Disorder (SPD) Checklist – Sensory sensitivities, seeking or avoiding input, and self-regulation.
Executive Functioning Checklist for Children– Planning, organization, task completion, and memory support.
Each checklist links to a dedicated page with practical tips and strategies to help children thrive. Tracking behaviors over time can provide useful insights for parents and caregivers and guide discussions with professionals.
Observing Learning and Development Differences: Guidance for Parents
Seeing your child show signs that match one or more of these categories can feel overwhelming, but it does not automatically mean they have a diagnosis. Many behaviors may be part of a temporary developmental phase, while others may reflect a neurodivergent learning style. The key is to keep observing your child, track behaviors using checklists, and consult a pediatrician, psychologist, or specialist for professional guidance. While a diagnosis may initially feel overwhelming, it can be a crucial step in providing your child with the right support.
By focusing on your child’s individual strengths and needs, and using positive reinforcement and structured support, you can help them feel confident, engage fully in learning, and develop skills that will benefit them long-term. Understanding these differences early allows you to provide targeted strategies, and support your child’s growth in both academic and life skills.
Takeaway: Every child is unique, and early observation combined with practical strategies and professional guidance can make a meaningful difference in their development.