How To Calculate Your Cycle And Ovulation
Enter the first day of your last few menstrual periods to view your shortest and longest cycles and to calculate your average cycle length and most common cycle length.
How to calculate your cycle and ovulation. How to calculate your next period ovulation infographic. To calculate the timing for you you must know your cycle length and luteal phase length. Once you have at least 8 months charted subtract 18 from the number of days in your shortest period to get your first fertile day in each cycle. The length of your menstrual cycle is the number of days from the first day of bleeding in your last period to the first day of bleeding in your next.
To calculate your ovulation by tracking your cervical mucus keep a calendar and track your period and the length of time between each period for 8 12 months. Once you have your average cycle length you can use this number in the. Regular periods mean having a period every 21 to 35 days fertility charting basal temperature tracking and purchased ovulation test kits can also be used to help predict a woman s fertile times. Understanding the menstrual cycle properly.
Menstrual periods are different from woman to woman and month to month. How we calculate your fertile days. While you may already have a fair understanding of your own menstrual cycle there are women who have cycle lengths that vary. The more dates you enter the more accurate the results will be.
Use this calculator to see when you may be ovulating to help find your most fertile days. Talk to your doctor or nurse to plan for pregnancy and find birth control that works for you. Ovulation occurs once each month usually in the middle of the cycle. Sometimes your own cycle can be as short as 23 days on cycle and 28 or 30 days the next.
This calculator gives approximate ovulation dates and fertile times for women who have regular periods. Find out a date for your next period and when you could possibly receive a positive pregnancy test. Plug your cycle and luteal phase numbers into the ovulation calculator to find out when you ovulate. Ovulation occurs 12 to 16 days before the next expected period.
This ovulation calculator provides an estimate of your fertile window and is not a guarantee of pregnancy or of birth control. First we estimate when you ll ovulate by counting back 14 days from the day you expect your next period. If your cycle is 28 days long your next period should start 28 days from the first day of your last period. Since it is so difficult to pin down exactly which day a woman ovulates we give you a 10 day window of when ovulation is most likely to occur.
To do this you need to know the length of your menstrual cycle which tends to vary from 23 to 35 days.