Pregnancy Months Calculator

Roughly: Month 1 = weeks 1-4, Month 2 = weeks 5-8, Month 3 = weeks 9-13, Month 4 = weeks 14-17, Month 5 = weeks 18-22, Month 6 = weeks 23-27, Month 7 = weeks 28-31, Month 8 = weeks 32-35, Month 9 = weeks 36-40.

Both are correct. Pregnancy is 40 weeks from LMP, which is 9 calendar months but 10 lunar months (28 days each). If counting from conception (38 weeks), it's closer to 8.7 calendar months.

Weeks are more precise — critical for tracking fetal development and timing medical tests. A week's difference in early pregnancy is significant (between week 8 and 9, for example), while 'two months' is less specific.