Pregnancy Calculator

Calculate pregnancy due date, weeks, trimester, and baby development using multiple methods.

Pregnancy Calculator – Due Date & Timeline

This pregnancy calculator estimates your pregnancy schedule using medical standard formulas. You can calculate using your due date, last period, conception date, ultrasound date or IVF transfer date.

How Pregnancy is Calculated

Pregnancy typically lasts about 40 weeks (280 days). The calculation begins from the first day of your last menstrual period, not the day of conception.

Trimester Overview

First Trimester: Week 1–12
Second Trimester: Week 13–27
Third Trimester: Week 28–40

Important Notes

Results are estimates. Actual delivery dates may vary based on health, pregnancy type, and medical conditions. Always consult your doctor for medical advice.