Due Date Calculator
Calculate your pregnancy due date accurately using multiple methods. Track pregnancy weeks, trimesters, and important milestones throughout your pregnancy journey.
Step 1: Date Information
How Due Date is Calculated
Most due dates are calculated as 40 weeks from the first day of your last menstrual period (LMP). This assumes a regular 28-day cycle with ovulation on day 14.
Step 2: Pregnancy Details
About Pregnancy Timing
Pregnancy is divided into three trimesters, each about 13-14 weeks. Full-term pregnancy is between 37-42 weeks. Most babies are born within 2 weeks before or after their due date.
Due Date Calculation Results
Estimated Due Date
Pregnancy Timeline & Trimesters
| Trimester | Weeks | Key Dates | Developmental Stage |
|---|
Pregnancy Milestones
Pregnancy Facts
Gestation Period: 40 weeks (280 days) from LMP
Only about 5% of babies are born on their exact due date. Most births occur between 37-42 weeks. The due date is an estimate to help track pregnancy progress and fetal development.
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