Pregnancy Due Date Calculator

Tracking your pregnancy is simple:

Step 1: Select the first day of your last menstrual period (LMP).

Step 2: Enter your average cycle length (standard is 28 days).

Step 3: Calculate to view your Due Date, Gestational Age (weeks/days), and current Trimester.

Step 4: Check the 'Baby Size' visual comparison and the detailed trimester timeline to see when your next milestones occur.

Due date is calculated using Naegele's rule: LMP + 280 days (40 weeks). We refine this by adjusting for your specific cycle length. For example, if your cycle is 30 days, we add 2 extra days to the standard calculation. Conception is estimated as LMP + (Cycle Length - 14 days).