Pregnancy Conception and Due Date Milestones Estimator
Calculate your estimated due date, current week of pregnancy, and gestational age in a few clicks. Standard gestational age estimates are based on the Naegele rule, assuming 280 days starting from the first day of your last period. CalcTracker provides this free online calculator for instant, precise, and detailed computations without requiring any sign-up or software installation. All calculations run locally in your browser to guarantee complete user privacy and 100% offline accessibility.
Naegele's Calculation Rule
Calculates pregnancy milestones by re-aligning standard menstrual lengths to custom, user-tuned intervals.
Example
- Last period starting on January 1st with a 28-day cycle yields an estimated due date on October 8th.
⚠ Clinics Note
- Ultrasounds performed during early trimesters provide the absolute standard clinical due date, superseding menstrual calculations.
Frequently Asked Questions (FAQ)
Q: How exact is the delivery date?
Only about 4% of babies are born precisely on their computed date. A delivery is generally standard 2 weeks before or after.
Q: What does LMP stand for?
LMP stands for Last Menstrual Period. It marks the chronological anchor for gestational progress.