Average Weight for a 23-Month-Old Boy

The average (50th-percentile) weight for a 23-month-old boy is 12.0 kg (26.3 lb), based on the WHO Child Growth Standards. Across the healthy range, most boys this age weighs between 9.7 kg (21.3 lb) and 14.8 kg (32.6 lb).

What's typical at this age

Growth is steady and gradual now. Portion sizes and appetite vary a lot from meal to meal and day to day. Consistency over weeks matters far more than any single weigh-in. Between month 23 and month 24, the median boy gains roughly 200 g.

A percentile compares your boy to other boys the same age — the 50th is simply the middle. Being above or below it is usually completely normal; a baby who has always tracked the 15th or 85th percentile is typically growing exactly as they should. What pediatricians watch for is a sudden change in the pattern, not the number itself.

Percentiles calculated from the WHO Child Growth Standards (2006). For information only — not medical advice. If you're concerned about your child's growth, speak to your pediatrician or health visitor. Full disclaimer.