Follow daily pregnancy progress with week counts and milestone dates. Compare starting methods, estimate due timing, and review each stage clearly.
Select a starting method, enter the known date, then choose the date you want to evaluate.
The chart compares elapsed pregnancy days with remaining days until the estimated due date.
| Method | Known Date | Reference Date | Pregnancy Day | Gestational Age | Estimated Due Date |
|---|---|---|---|---|---|
| LMP | January 1, 2026 | March 15, 2026 | 74 | 10 weeks, 3 days | October 8, 2026 |
| Conception | January 20, 2026 | April 4, 2026 | 90 | 12 weeks, 5 days | October 13, 2026 |
| Due Date | November 5, 2026 | May 1, 2026 | 92 | 13 weeks, 0 days | November 5, 2026 |
1. From last menstrual period: Estimated due date = LMP + 280 days.
2. From conception: Estimated due date = conception date + 266 days.
3. From due date: Estimated LMP = due date - 280 days.
4. Gestational days elapsed: reference date - estimated LMP.
5. Pregnancy day number: gestational days elapsed + 1.
6. Gestational weeks: completed weeks = floor(days / 7), remaining days = days mod 7.
7. Progress percent: gestational days elapsed / 280 × 100.
This tool supports planning and tracking. It does not replace medical advice or ultrasound-based dating from a qualified clinician.
It estimates the exact day of pregnancy on a chosen reference date. It also shows completed weeks, remaining days, trimester, progress percentage, and estimated due date.
Use the most reliable date you know. Many people start with the last menstrual period. If conception or due date is more certain, choose that method instead.
Clinical pregnancy dating usually begins from the last menstrual period. That makes gestational age about two weeks ahead of conception-based fetal age in typical cycles.
It is an estimate based on standard pregnancy length assumptions. Real delivery timing varies, and ultrasound or clinician guidance may adjust dating more accurately.
Yes, but embryo transfer and fertility treatment dating often follow specific clinical rules. For IVF, confirm the official gestational date with your fertility specialist.
The calculator still reports the pregnancy age and marks the case as beyond the estimated due date. This helps you measure how far past due the reference date falls.
Milestones give quick checkpoints for common week markers, such as week 12, week 20, week 28, week 37, and the estimated due date.
No. This calculator is useful for tracking and planning, but medical decisions should be based on professional care, imaging, symptoms, and clinician recommendations.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.