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How do I calculate my ovulation on a 35 day cycle?

2 doctors weighed in
Dr. Jennifer Mushtaler
Obstetrics & Gynecology
1 doctor agrees

In brief: Day 20-21

Normal cycles range from every 21 days to every 35 days.
Most women ovulate approximately 14 days prior to the start of a new cycle. So if you cycle every 35 days, you are most fertile around day 21. If you cycle every 28 days, you are most likely fertile around day 14. Simply take the lengths of your cycle and subtract 14 to calculate your most fertile time.

In brief: Day 20-21

Normal cycles range from every 21 days to every 35 days.
Most women ovulate approximately 14 days prior to the start of a new cycle. So if you cycle every 35 days, you are most fertile around day 21. If you cycle every 28 days, you are most likely fertile around day 14. Simply take the lengths of your cycle and subtract 14 to calculate your most fertile time.
Dr. Jennifer Mushtaler
Dr. Jennifer Mushtaler
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