Estimated due date
Dec 26, 2026
Based on Naegele’s Rule with a cycle-length refinement.
High-end pregnancy planning
Estimate your due date and track every pregnancy milestone with confidence.
Enter your last menstrual period, adjust for cycle length, and get an elegant, medically inspired timeline with trimester progress, milestone guidance, and rich search-friendly markup.
280 days
Standard Naegele’s Rule
20-45 days
Cycle-length adjustment range
Weeks & days
Current gestational age
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Due date
Dec 26, 2026
Current age
10 weeks 0 days
Current stage
First trimester
Calculator
Pregnancy due date calculator
Due date = LMP + 280 days + (cycle length - 28 days). Current age is calculated from today to your LMP and displayed as weeks and days.
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Current gestational age
10 weeks 0 days
Calculated from today relative to your LMP.
Current trimester
First trimester
Early development, implantation, and first prenatal milestones.
Progress toward due date
25% complete
Weeks 1-13
Current milestone: First trimester
Pregnancy milestone tracker
Three major trimesters with clearly defined ranges, current status, and practical context.
First trimester
Early development, implantation, and first prenatal milestones.
Second trimester
Often the most comfortable phase with anatomy scan planning.
Third trimester
Rapid growth, delivery preparation, and final countdown.
Important dates at a glance
LMP
Mar 21, 2026
Ovulation estimate
Apr 4, 2026
Second trimester starts
Jun 27, 2026
Third trimester starts
Oct 3, 2026
Calculated delivery window
Between weeks 37 and 42 is the usual full-term window.
Your personalized due date remains an estimate, but the milestone planner helps you understand the path ahead.