what is 20 weeks in months

If you are 20 weeks pregnant, you are about 4 1/2 months along. This is because obstetricians have standardized timing a pregnancy to 40 weeks so that it is easier to communicate and determine due dates. However, it is important to note that the number of weeks in an average month is close to 4.35, so it is not sufficient to simply assume that a month equals to four weeks. According to, 20 weeks is equal to about 4.60 months, while calculates that 20 weeks is 4.5992 months.