Ovulation Calculator
Menstrual Information
First day of your last period
4 JULY 2025
A cycle length is counted from the 1st day of your period in current cycle to a day before the 1st day of your period in the next cycle.
Click here to calculate duration between two dates.
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Results
Estimated Fertile Window14 July 2025 - 19 July 2025
Probable Ovulation Date18 July 2025
(4 July 2025) 14 Days to probable ovulation date
Approximate Next Menstruation1 August 2025
(4 July 2025) 28 Days to approximate next menstruation
THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE
This tool is only intended for general informational purposes only. The generated calculation results are considered as estimates, and are not a guarantee of pregnancy or of birth control. It does not address individual circumstances.
This tool and any related information stated on this website are not medical advice, and also not a substitute for professional medical advice. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health.
Consult your doctor to plan for pregnancy and find birth control that works for you.
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