Period Tracker

Predict your next period and fertile window based on your average cycle.

Average is 28 days
Average is 5 days

Next Period Date

Mon, Sep 14

Fertility Window

Estimated OvulationMon, Aug 31
Fertile WindowWed, Aug 26 - Tue, Sep 1
This tool uses standard averages. It should not be used as a form of birth control.
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