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Ovulation calculator

  • Shortest menstrual cycle: day
  • Longest menstrual cycle: day
  • Last menstrual time: year month day
Ovulation calculation results

   Safety period    Ovulation    Menstrual period

Use the ovulation calculator to figure out when to ovulate. If you want to get pregnant, you can use the calculator to determine the ovulation period and have sex during ovulation period to increase the chance of conception. Contraceptives can also determine the safety period and reduce the chance of pregnancy.

Ovulation calculator principle

Women's ovulation date is generally about 14 days before the next menstrual period. From the first day of the next menstrual period, the last 14 days or 14 days minus is the day of ovulation. The day of ovulation and the first 5 days and the last 4 days are called the ovulation period. For example, a woman's menstrual cycle is 28 days, and the first day of this menstrual cycle is on December 2. Then the next menstrual cycle is on December 30 (December 2 plus 28 days), and then from December 30 days minus 14 days, then December 16 is the ovulation day. Ovulation day, the first 5 days and the next 4 days, that is, December 11-20 is the ovulation period. Except for the menstrual period and ovulation period, the rest of the time are safe periods. It is not necessary to use any contraceptives and contraceptives during sexual intercourse.

Female ovulation dates vary widely due to their physical fitness and are for reference only.

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