2nd TrimesterMonth 5Week 20 of 40
20 Weeks Pregnant
— How Many Months Is It?
20w
Equivalent to
Month 5
2nd Trimester
🍌
Baby is the size of a
Banana
16.4 cm (~6.5 in) · 300g
🌱Fetal Development Milestones — Week 20
The halfway mark! Your anatomy scan (morphology ultrasound) is typically scheduled this week.
Pregnancy timeline progress50%
Week 1Week 20Week 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 20
20 weeks pregnant equals Month 5 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.
The halfway mark! Your anatomy scan (morphology ultrasound) is typically scheduled this week.
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).