Calculation method
Physical: 23 days · Emotional: 28 days · Intellectual: 33 days · Intuitive: 38 days. The yellow sum is their average.
Hoffmann Software & Servicewww.hoffmann-software.de
Biorhythm & Family Planning â Woman
Four traditional sine curves and their average for the woman.
FREE · NO SIGN-UP · ONLINE
Biorhythm & Family Planning â Woman
Four traditional sine curves and their average for the woman.
Choose an analysis
01 / INPUTS
Date range and personal details
Info
Remember my details for next time
If you choose, your birth dates and cycle details will appear automatically on future visits. The chart will start from today each time.
I explicitly agree to save my birth dates and cycle information in a browser cookie on this device for 180 days.
Birth dates and menstrual data are private. The cookie is set only with your agreement, sent only to this calculator, and can be erased at any time. No profile database.
02 / RESULTS
Chart results
Woman (01.01.1992)
03 / INFORMATION
Background and notes
Scientific notice
Traditional biorhythm theory is not scientifically validated. Sex prediction has no proven predictive power. Calendar-based ovulation estimates are unreliable and must not be used for contraception or medical planning.
The four cycles for women
The same 23-, 28-, 33- and 38-day periods are used for women and men. The starting point is the date of birth, not the menstrual cycle.
These biorhythm curves are a historical model without proven predictive ability. Menstrual-cycle estimates appear separately in the family-planning view.