how big is a 17 week old fetus

just now 1
Nature

A 17-week-old fetus is approximately 11-14 cm (about 5.1 inches) in length from crown to rump and weighs around 140-150 grams (about 5 to 5.9 ounces).

Size Details

  • Length: Around 11-14 cm (5.1 inches) from head to rump.
  • Weight: Approximately 140-150 grams (5 to 5.9 ounces).
  • The fetus is roughly the size of an orange or a pomegranate at this stage.

Development Notes

  • The fetus has growing legs that are longer; the head is no longer disproportionately large.
  • Fat is beginning to accumulate to help regulate body temperature.
  • The fetus is mobile, and movements might be felt by the mother around this time.