How old is a baby born in December 2023?

A baby born in December 2023 is currently 11–12 months old.

Some of these children have recently celebrated their first birthday, which means that they are now called toddlers instead of infants.

They are 48–52 weeks old. However, their parents are now counting their ages in months or years instead of weeks.

Many of the babies in this age group are now crawling. Some are even beginning to stand up and walk. A child born in December 2023 might also say their first word in the next month or so.