Free Ovulation Calculator – Calculate Your Fertile Window

Ovulation Calculator

First Day of Last Menstrual Period (LMP)

Average Menstrual Cycle Length (Days)

Result	Date
Estimated Ovulation Day
Fertile Window
Most Fertile Day
Next Expected Period

Note: This calculator provides an estimate only. Ovulation can vary due to stress, illness, medications, hormonal conditions, and individual cycle variations. It should not be used as a substitute for medical advice or as a guaranteed method of contraception or conception planning.