Growth Parameters
Weight: Birth 3kg, 5 months = 2x birth weight, 1 year = 3x birth weight, 2 years = 4x birth weight.
Length/Height: Birth 50cm, 1 year = 75cm, 2 years = 87cm, 5-6 years = 110cm, 12 years = 150cm.
Head circumference: Birth 35cm, 1 year = 47cm, 2 years = 49cm (90% adult).
Motor Milestones
3 months: head held, social smile. 6 months: transfers objects, rolls. 9 months: sits without support, crawls. 12 months: stands with support, pincer grasp. 18 months: walks alone, 2-word sentences. 24 months: runs, 200+ words.
Language Milestones
6 months: babbling. 12 months: mama, dada. 18 months: 10+ words. 24 months: 2-word phrases. 3 years: full sentences, understands 1000 words.
Revision history
- 20 September 2026 — Initial publication
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