Pregnancy Calculator

Tracking Your Pregnancy Journey

Congratulations! Knowing how far along you are in your pregnancy helps you understand your baby's development, anticipate milestones, and plan for prenatal care. This calculator estimates your current gestational age (weeks and days pregnant), your current trimester, and confirms key dates like estimated conception and due date.

How to Use

1. Select whether you want to calculate based on your **Last Menstrual Period (LMP)** or your **Estimated Due Date (EDD)**.
2. If using LMP: Enter the first day of your last period and your average cycle length.
3. If using EDD: Enter the due date provided by your doctor or another calculator.
4. Click "Calculate Pregnancy Details".

The results will show:

• Estimated Due Date (if calculated from LMP) or Confirmed Due Date (if entered).
• Estimated Conception Date.
• Current Gestational Age (e.g., 15 weeks, 3 days pregnant).
• Current Trimester.
• Estimated start dates for the second and third trimesters.

Calculation Basis

• From LMP:** Due date is estimated as LMP + 280 days (adjusted slightly based on cycle length deviations from 28 if logic included). Gestational age is calculated as the number of days from LMP to today. Conception is estimated as LMP + (Cycle Length - 14) days.
• From Due Date:** Gestational age is calculated as 280 days - (days remaining until due date). Conception is estimated as Due Date - 266 days.
• Trimesters:** 1st: Weeks 1-13. 2nd: Weeks 14-27. 3rd: Weeks 28-40+