Baby age in months calculator

Exact months & days from birth date to today (or any chosen date). Plus total days, weeks, and days remaining to common milestones (6 mo, 1 yr, 2 yr).

Baby age
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Total days
0
Total weeks
0
Total months (whole)
0
Days to 6 months
0
Days to 1 year
0
Days to 2 years
0

Notes

  • Months are counted by calendar — the day-of-month roll-over (e.g. 15 Jan → 15 Feb = 1 month).
  • "Adjusted age" for preemies (subtract weeks of prematurity from chronological age) is not applied here.
  • Vaccine and milestone schedules from the WHO and pediatric guidelines typically use completed months.