2 years 7 mo

31 Month Old Baby Development

Joining rule-based games — turns, winning and losing begin.

11.3 - 17.7 kgWEIGHT
88 - 101 cmLENGTH
48 - 53 cmHEAD SIZE

Ranges cover most babies this age. To see where your baby sits, use the percentile calculator.

What can a 31 month old do?

  • Tries to wait turns
  • Names colors correctly
  • Solves 3-piece puzzles
  • Tries pedal bike
  • Balances with large ball
  • Retells simple stories
  • Washes hands (supervised)

Feeding

  • Don't skip breakfast — energy for the day
  • Whole eggs daily are fine
  • Unsalted herbs (thyme, mint) add variety
  • If lunch is main, keep dinner light
  • Involve in kitchen — carrot chopping
  • Oatmeal + fruit over sugary cereal

Sleep

Sleeps 10-13 hours; some no longer nap.

Tips for you

  • Learning to lose is a life skill — finish the game
  • Repetitive books keep attention
  • Family conversations boost vocabulary
  • Introduce regular activity (dance, sport)
  • Chores teach responsibility
  • Log emotional patterns in a journal
Tip of the month: Saying "I'm listening" is the foundation of trust.

Frequently asked questions

How much should a 31 month old weigh?

A typical weight range for a 31 month old is 11.3 - 17.7 kg, with length around 88 - 101 cm and head circumference around 48 - 53 cm. Following their own growth curve matters more than any single measurement.

How much does a 31 month old sleep?

Sleeps 10-13 hours; some no longer nap.

What should a 31 month old be doing?

Tries to wait turns. Names colors correctly. Solves 3-piece puzzles. Tries pedal bike. Every baby develops at their own pace, and differences of a few weeks are normal.

Every baby develops at their own pace. This is general guidance; talk to your pediatrician about any concerns.

Baby development by month