12 months old

• Average girl weighs 9.5 kg; average boy weighs 10.2 kg.
• Average girl is 74 cm tall; average boy is 76 cm tall.

18 months old

• Average girl weighs 10.7 kg; average boy weighs 11.1 kg.
• Average girl is 80 cm tall; average boy is 80.5 cm tall.

12 months old

• Recognizes familiar people at a distance of 6 meters.
• Frequently inspects objects and people closely.

18 months old

• Can fix eyes on a rolling ball 3 meters away.
• Can see objects at a distance.

12 months old

• Child likely has 8 teeth; may be working on first molars.

18 months old

• First molars have erupted; child likely has 16 teeth.

12 months old

• Sleeps 13.75 hours a day—on average 11.5 hours at night; 2.25 hours during the day.

18 months old

• Sleeps 13.5 hours a day—on average 11.5 hours at night; 2 hours during the day.

12 months old

• Holds spoon but needs help to use it.
• Can use thumb and index finger to pick up small pieces of food.
• Beginning to drink from a cup.

18 months old

• Raises and holds cup with 2 hands.
• Drinks from a cup without spilling.
• Can use a spoon or fork (when the child wants to).

12 months old

• Gets self to sitting position and sits well for a long time.
• Pulls self up to stand.
• May stand alone without support.
• May crawl or creep on hands and knees.
• Walks holding onto furniture; may walk independently.

18 months old

• Walks with feet slightly apart and may even run.
• Can push or pull large objects.
• Carries toys or other objects while walking.
• Climbs onto furniture, rotates body, and sits down.
• Creeps backwards down the stairs.

12 months old

• Uses finger to point at objects.
• Picks up objects using thumb and index finger.
• Bangs two objects together.
• Can put blocks into and take them out of a small box.
• Drops objects voluntarily.

18 months old

• Scribbles with a crayon.
• Can build a tower of 3 blocks.
• Picks up very small objects.
• Removes shoes, socks, hat.
• Is more likely to explore objects with hands instead of mouth.

12 months old

• Babbles a lot, using varying tones and intensity
• Recognizes name and turns toward person speaking it.
• Tries to imitate words.
• Follows simple directions, such as “come to mommy”.
• May say "mama" and "dada".

18 months old

• Says 6-20 recognizable words.
• Says own name.
• Uses some active verbs (such as go or jump).
• Uses some direction words (such as up, down, in, out).
• May echo or join in when words or rhymes are spoken directly to the child.
• "Talks" to self.

12 months old

• Finds hidden objects easily.
• Imitates gestures such as waving and clapping hands.
• Thoroughly explores objects by shaking, throwing, banging.

18 months old

• Imitates familiar actions such as reading a book and answering the phone.
• May point to 2 or 3 body parts when hearing their names.
• Remembers where hidden objects are, even long after they are out of sight.

12 months old

• Is affectionate toward familiar people.
• May be shy or anxious with strangers.
• Shows preferences for certain people or toys.
• Makes sounds or repeats gestures for attention.

18 months old

• Amuses himself or herself, but usually prefers to be near an adult.
• May be prone to episodes of separation anxiety.
• Alternates between desire for independence and dependence.
• Frequently says “no” and may have outbursts when things don’t go the child’s way.