Week 40 of Pregnancy

Length

51.2 cm

Crown-to-heel

Weight

3.46 kg

Fetal development

• All organs are fully prepared for birth.
• Average weight ~3.4kg, length ~51cm.
• Placental aging begins late in pregnancy and may require closer monitoring.

Maternal changes

• Birth ±2 weeks from the EDD is normal.
• After 41 weeks, your OB may discuss induction.

Recommended checkups

• Non-stress tests (NST) and amniotic fluid checks become more frequent after 40 weeks.

Related calculators

• Fetal weight estimate Estimate weight from ultrasound values
• Kick counter Track time to reach 10 fetal kicks in 2 hours
• Contraction timer Track contraction start/end to see interval, duration, and 5-1-1
• Due date Calculate pregnancy week and due date from your last period

Related topics

• Preeclampsia New hypertension and proteinuria after week 20 — warning signs and response
• Pregnancy Weight Gain Recommended range by BMI, weekly targets, gaining too much or too little
• Pregnancy Foods What to eat, what to avoid, and what to limit

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