Enter your due date or Last period date or Ultrasound pregnancy details to get a free conception date estimation with medically guided accuracy.
The estimated date of conception edc calculator helps you identify the most likely days when conception occurred along with the possible intercourse window that may have led to pregnancy. It supports multiple calculation methods and uses a medically based model for clear reproductive timeline estimation.
How to Use
Select the calculation method that matches the information you already know. You can enter your due date, your last menstrual period with cycle length, or your ultrasound measurements. The estimated date of conception edc calculator processes these inputs and determines ovulation timing along with probable and possible conception ranges.
What You Receive
- Most probable conception dates
- Most probable intercourse window
- Possible conception dates
- Possible intercourse window
- Estimated due date
Example Input
| Field | Value |
|---|---|
| Calculation Based On | Due Date |
| Estimated Due Date | 31/10/2025 |
Pregnancy Conception Estimate
| Item | Value |
|---|---|
| Most Probable Conception Dates | 7 Feb 2025 – 10 Feb 2025 |
| Most Probable Intercourse Dates | 5 Feb 2025 – 10 Feb 2025 |
| Possible Conception Dates | 6 Feb 2025 – 11 Feb 2025 |
| Possible Intercourse Dates | 2 Feb 2025 – 11 Feb 2025 |
| Estimated Due Date | 31 Oct 2025 |
This calculator applies a standard medical model. Results are approximate and for informational use only. Consult your healthcare provider for confirmation.
Understanding the Results
The calculator follows a medical timing model that places conception shortly after ovulation. Ovulation is estimated from your menstrual cycle or derived from your due date or ultrasound information. Results show both the likely conception period and the broader possible window to help you understand the timeline more clearly.
Common Questions
Is the estimated date of conception calculator accurate ?
It applies well established medical timing patterns to give a dependable estimate based on your chosen input.
Why do the results contain ranges instead of a single date ?
Conception can vary slightly due to differences in ovulation timing and sperm survival, so showing ranges gives a more realistic timeline.
Which method should I select ?
Use the information you know. Due date and ultrasound data usually give the most precise results.