ifate logo
  • LIVE Mobile Psychics! sponsored

Biorhythm Compatibility

Use this free online biorhythm tool to compare biorhythms of two people. By comparing the biorhythm cycles of two partners in a couple, it is possible to find inflection points, and days where romantic partners are "in sync" with one another. Are your biorhythms compatible?

tags: couples biorhythm, biorhythm compatibility, compare biorhythms

What is Biorhythm Compatibility

vintage divider

Biorhythm compatibility compares the biorhythm charts of two people in a relationship on any given date. By overlapping the biorhythm readings of both partners, you can predict the dates when couples will be most in tune with each other on physical, intellectual and emotional terms.


Biorhythms are unique to each date of birth. And while two people can be born years apart, their individual biorhythm cycles will share specific dates that are perfectly harmonious. It's not uncommon for one particular cycle to be nearly identical in both partners. In some couples, two cycles will be nearly on the same wavelength. And in rare cases, all three biorhythm cycles will sync perfectly.

NOTE: Couples that have the same birthday on the same exact year will have perfectly matched lifelong biorhythms.

For most couples however, that's not going to be the case. There are always going to be those days when one half of a couple is feeling great, and the other one isn't. Or those days when one half of a couple is feeling energetic, and the other one is feeling more cerebral or more emotional. This is normal. And in many cases it's a good thing.

NOTE: Don't worry if your biorhythms aren't 100% in sync, or if they seem to be completely out of sync. Very few couples are 100% on the same wavelength with each other -- or even 50%. Some of the best couples diverge wildly on one aspect or another. The important thing is understanding what's happening -- and when it's going to happen.

Understanding biorhythm divergences

The concepts used in a biorhythm compatibility chart are exactly the same as a standard (single person) biorhythm chart. In the first half of the reading, you'll calculate the same physical, emotional and intellectual biorhythm primary cycles. In the second part of the reading you'll calculate the same passion, wisdom and mastery biorhythm secondary cycles. But the important part of a compatibility reading is noting when the two charts converge or diverge.

A convergent biorhythm occurs when two people's biorhythms trend towards the same value at the same time. A divergent biorhythm occurs when two people's biorhythms trend further apart from their closest matching value.

For example - if one person's chart shows an emotional "bad day", while the other chart shows an emotional "good day", this is called a divergence. It is important to note that a divergence may not necessarily imply conflict or fighting - but it may imply 'neediness' or indicate a time of necessary 'mindfulness' for the feelings whichever half of the couple is having a 'down' day.

In other words - divergences in couples' biorythm charts may simply indicate a time when extra care must be taken.

A biorhythm compatibility "test"

Some people ask us whether or not they can "test" for general compatibiity using biorhythms. The answer isn't a simple yes or no. Divergences simply indicate passing phases and imbalances, not grand disagreements or lifelong incompatibility. They do not necessarily indicate a couple that is not getting along in the larger sense.

Biorhythm compatibility on future dates

One of the most common ways to use this tool is to check ahead for important dates. Do you have a vacation planned with your significant other? Do you have a big night out coming soon? You can use the "target date" setting to calculate compatibility on future dates, and get an idea of what dates will be best -- or what to expect on a given date.

For a standard biorhythm reading, visit the main biorhythm page.

More awesome ifate logo stuff:


Some signs were made for each other. Others, are like oil and water. Can your

relationship work?



Today's Horoscopes

today's horoscopes

Check out iFate's award winning daily horoscopes for all 12 zodiac signs. See what the stars have to say about your day, your future and your subconscious.


Come back and check your horoscope every day!





"Arrow of Love"


The Arrow of Love tarot spread, also called "Cupid's Arrow" is a favorite of psychics for insights into love & relationships.

How does your relationship stack-up? Is the romance still there?

This is an intermediate-level 6 card tarot spread.




"The Fork"

Also known as "The Fork in the Path", this simple rune reading is used to gain clarity and insight into two different options.

Need help making a big decision? This rune reading often provides excellent insight.



Where were the planets when you were born? Horoscopes are fun, but birth-charts are the real deal.


"The Magic Fateball"

magic fate ball