2nd TrimesterMonth 7Week 27 of 40
27 Weeks Pregnant
— How Many Months Is It?
27w
Equivalent to
Month 7
2nd Trimester
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Baby is the size of a
Cauliflower
36.6 cm (~14.4 in) · 875g
🌱Fetal Development Milestones — Week 27
Lungs continue maturing surfactant production as you prepare to transition into the final trimester.
Pregnancy timeline progress68%
Week 1Week 27Week 40
Calculate Your Exact Due Date
Enter your last period date for an instant gestational calculation
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Enter your date to calculate gestational age.
⚠️ Based on ACOG guidelines and Naegele's Rule for informational purposes only. Consult your OB-GYN.
Frequently Asked Questions — Week 27
27 weeks pregnant equals Month 7 of gestation in the 2nd Trimester. Because calendar months vary between 28 and 31 days while weeks are exactly 7 days, clinical tracking in weeks provides the most accurate timeline.
Lungs continue maturing surfactant production as you prepare to transition into the final trimester.
Use the calculator above: enter the first day of your last period (LMP) and the tool will calculate your exact estimated due date using Naegele\'s Rule (LMP + 280 days).