In short: According to the WHO, the norm for starting walking is from 9 to 15 months. A child who started at 15 months is just as normal as someone who started at 10. There is no need to rush walking - it will come by itself when the brain and muscles are ready.
Average age of first steps: 11–13 months. But "average" does not mean "correct" – sooner or later within the normal range, equally good.
This material is for informational purposes only and does not constitute medical advice and is not a substitute for medical advice. If you are concerned about your child's motor development, see your pediatrician or pediatric neurologist.