Biorhythm
How's your condition today?
Enter your birth date to see your physical, emotional, and intellectual biorhythms today — as a live graph. It changes every day.
Biorhythm is a free reference tool that uses your birth date to calculate the classic 23-day physical, 28-day emotional and 33-day intellectual cycles. Check today’s score, a two-week trend graph, tomorrow’s movement and a couple rhythm match in one place.
Enter your Gregorian birth date. For fun and reference.
Three cycles
Today's physical, emotional, and intellectual rhythms by birth date
Physical
23-day cycle
Emotional
28-day cycle
Intellectual
33-day cycle
Couple biorhythm match
See how well two people’s physical, emotional, and intellectual rhythms align.
Frequently asked questions
- What does the biorhythm reading show?
- It calculates where your physical, emotional and intellectual cycles sit today from your birth date, then shows an overall condition score and whether each rhythm is rising or falling.
- What period does the graph cover?
- The graph shows a two-week trend around today. It also shows tomorrow’s value so you can see the direction of each rhythm.
- How does the couple match work?
- Enter two birth dates and the app compares the phase difference across the physical, emotional and intellectual cycles to produce a 0-100 rhythm match score.
- Is this scientifically proven?
- No. Biorhythm is not a scientifically proven theory, so the result should be treated as entertainment and a light reference only.