Pregnancy Due-Date Calculator

How to use

Estimate due date and key pregnancy milestones.

Inputs

Output: Estimated due date, ovulation date, and fertile window.

Tip: This is an estimate and not a medical diagnosis.

First day of last period

Average cycle length (days)

Example

Sample inputs

Expected result: Estimated due date, ovulation date, and fertile window.

FAQ

Best for: Estimate due date and key pregnancy milestones.
Inputs to prepare: First day of last period · Cycle length (optional)
How to read the result: Estimated due date, ovulation date, and fertile window. This is an estimate and not a medical diagnosis.

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