Due Date Calculator

Estimate an expected delivery date from last period, conception date, or IVF transfer details.

Preparing Due Date Calculator

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Input

Choose the starting point that matches your pregnancy records, then enter the date information to estimate the expected due date. This tool shows the result instantly without step-by-step output.

Input summary

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How to use Due Date Calculator

Enter the pregnancy starting date you know best, and the calculator will estimate the expected due date from that timeline.

What this calculator is for

This calculator is for early planning, appointment preparation, and understanding how common pregnancy dates map to an estimated due date. In clinical care, ultrasound timing and IVF details can refine or confirm the final date used in the record.

Tips

If the pregnancy followed IVF, use the IVF mode because embryo age changes the expected due date calculation.
An estimated due date is a guide, not a guarantee of the delivery day.
If prenatal records already show a confirmed due date, use that as the main date for planning.