How Many Months
Pregnant is 21 Weeks?

You entered: 21 Weeks.
Change date
4.83 Months
(approximately)

This is equivalent to
4 Months and 25 Days

Monthly Progress

You are 82% through month 4
Overall Progress:

4 Months Announcement

Announcement for 4 Months

Baby at 21 Weeks / 4 Months


Read more on week 21 here

Please Note:

Months on this page are calculated from Gregorian calendar months.
*In obstetrics, a 28 day method is sometimes used where each month is exactly 4 weeks long.
*The 28 day method to count elapsed months:
21 Weeks = 5.25 Months.