First weeks

Newborn Baby Development

Welcome to the world, little one! The first days are all about adjustment.

2.5 - 4.0 kgWEIGHT
46 - 53 cmLENGTH
33 - 37 cmHEAD SIZE

Ranges cover most babies this age. To see where your baby sits, use the percentile calculator.

What can a newborn do?

  • Sucking reflex is well developed
  • Squints in bright light
  • Responds to loud sounds
  • Grasps when palm is touched
  • Recognizes mother's voice
  • Sees faces at close range (20-30 cm)
  • Shows Moro (startle) reflex to sudden movements
  • Briefly lifts head

Feeding

  • Breast milk only for the first 6 months is recommended
  • 8-12 feeds per day is normal
  • Every drop of colostrum is precious
  • Baby's lips should flange out (proper latch)
  • Let baby finish the first breast, then offer the second
  • Listen for swallowing — it means baby is feeding
  • If using formula, choose with doctor's advice

Sleep

Sleeps 16-17 hours a day, waking every 2-3 hours. For every sleep, the safest place is on their back, on a firm, flat, empty surface (no pillows, blankets, or toys), in your room but in their own bed.

Tips for you

  • Skin-to-skin contact strengthens your bond
  • Breastfeeding can be hard at first — be patient
  • Take care of yourself, postpartum recovery matters
  • Limit visitors in the first weeks
  • Postpartum bleeding can last up to 6 weeks; seek medical help right away if you soak a pad in an hour, pass clots bigger than a plum, or have a fever or foul smell
  • Drink to thirst, especially while breastfeeding
  • Mood swings after birth are normal — ask for support
Tip of the month: Keep the umbilical stump dry until it falls off, and check at every diaper change. In a baby under 3 months, a fever of 38°C (100.4°F) or higher, refusing feeds, unusual sleepiness, or jaundice starting in the first 24 hours is an emergency; seek medical help right away.

Frequently asked questions

How much should a newborn weigh?

A typical weight range for a newborn is 2.5 - 4.0 kg, with length around 46 - 53 cm and head circumference around 33 - 37 cm. Following their own growth curve matters more than any single measurement.

How much does a newborn sleep?

Sleeps 16-17 hours a day, waking every 2-3 hours. For every sleep, the safest place is on their back, on a firm, flat, empty surface (no pillows, blankets, or toys), in your room but in their own bed.

What should a newborn be doing?

Sucking reflex is well developed. Squints in bright light. Responds to loud sounds. Grasps when palm is touched. Every baby develops at their own pace, and differences of a few weeks are normal.

Every baby develops at their own pace. This is general guidance; talk to your pediatrician about any concerns.

Baby development by month