Fertility Planner

Fertility Window Calculator

Plan your conception journey with a personalized 3-cycle fertility forecast. See your fertile windows, peak fertility days, and ovulation dates across the next three menstrual cycles, all in one clear, actionable view.

Your Cycle Information

The first day of your most recent period

Days from one period start to the next

Days from ovulation to next period (typically 14)

We will forecast your fertile windows across the next 3 menstrual cycles based on these inputs.

Calendar Legend

Ovulation Day
Peak Fertility (2 days before)
Fertile Days
Non-fertile

Your Fertility Forecast

Enter your cycle details to generate a personalized 3-month fertility window forecast with peak days highlighted.

Related Tools

Due Date Calculator

Calculate your due date

Ovulation Calculator

Single-cycle prediction

Pregnancy Week

How far along?

Fertility Window FAQ