Safe Days Calendar
Calculate the safe/infertile period between you or your partner’s last menstrual cycle. This helps to avoid unplanned pregnancies or when to get pregnant.

First day of your last menstrual period
Cycle Length
Menstruation duration
Please, Enter all values correctly.
01 - Menstruation days
02 - Conventionally safe days
03 - Ovulation
04 - Favorable day for conceiving a girl
05 - Favorable day for conceiving a boy
06 - Safe days to conceive

What is a Safe Days Calendar?
A Safe Days Calendar, also known as the Rhythm Method or Natural Family Planning, is a method used to determine the fertile and infertile days of a woman’s menstrual cycle to prevent or plan pregnancy. It involves tracking menstrual cycles over several months to identify the pattern of ovulation and fertility. Based on this data, couples can then abstain from intercourse or use alternative contraceptive methods during the fertile window to avoid pregnancy. However, it’s essential to note that the Safe Days Calendar method is not as reliable as other forms of contraception, as factors such as irregular cycles and unexpected ovulation can lead to unintended pregnancies. Therefore, it’s recommended to use additional contraceptive methods or consult with a healthcare provider for personalized advice.

References/Sources:

  1. Planned Parenthood. (n.d.). Fertility Awareness. Retrieved from https://www.plannedparenthood.org/learn/birth-control/fertility-awareness/whats-fertility-awareness
  2. Centers for Disease Control and Prevention (CDC). (2022). U.S. Selected Practice Recommendations for Contraceptive Use. Retrieved from https://www.cdc.gov/reproductivehealth/contraception/mmwr/mec/appendixd_tableD1.html
Disclaimer: This calculator/tool is only a guide, make sure to consult with a professional before making any decisions.