Pregnancy Calculator
Pregnancy Calculator
Choose a method below — enter that data and press Calculate.
All results are estimates. For personalized medical advice, consult a healthcare professional.
Common method: EDD = LMP + 280 days (40 weeks).
Trimester Reference & Fetal Highlights
1st Trimester (Weeks 1–12): Organ formation starts, early development.
2nd Trimester (Weeks 13–27): Rapid growth, movement felt, anatomy visible on ultrasound.
3rd Trimester (Weeks 28–40): Weight gain, lung maturation, prepares for birth.
Date format: March 15, 2026
