How this family planning method works
How Does the Standard Days Method of Family Planning Work?
The Standard Days Method® is a fertility awareness-based family planning method that identifies a fixed fertile window for women with cycles that are between 26 and 32 days long. For women with cycles in this range, the method identifies days 8 through 19 as potentially fertile days. A user simply tracks the start date of her period and the days of her cycle to know if she is on a day when pregnancy is possible or not.
Researchers at the Institute for Reproductive Health at Georgetown University developed this family planning method and tested it in large-scale clinical trials. It is proven to be more than 95% effective at preventing pregnancy and with the right tools, is very easy to use. See more about this research and the scientific origins of this family planning method in the Research section of this website.
Millions of women use family planning tools based on the Standard Days Method to prevent pregnancy or plan pregnancy because it is:
- More than 95% Effective
- Side-Effect Free
- Easy to Use
- Educational & Empowering
Tools Based on the Standard Days Method of Family Planning
How to Prevent Pregnancy with CycleBeads
How to Plan Pregnancy with CycleBeads
Who Can Use This Family Planning Method?
This family planning method is most effective for women with menstrual cycles that are regularly between 26 and 32 days long. The CycleBeads and iCycleBeads tools will help a woman determine if her cycles are in this range and that they stay in this range. Women with cycles outside this range should use a different method of family planning to prevent pregnancy. If you are uncertain about the length of your cycle, please see How to determine the length of your cycle in our FAQ section to find out more.
1 According to analysis of data from the World Health Organization, 80% of women have cycles in the 26-32 day range.
2 The Institute for Reproductive Health is a research organization established at Georgetown University Medical Center, and working in reproductive health for +25 years.