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Compatibility based on your birth data

Why are you drawn to each other—and what do you argue about?

Start by comparing your signs and numbers. For a detailed look at feelings, communication, and daily disagreements, choose synastry or a full compatibility report.

Free calculation

Calculate compatibility

Enter both people’s names and birth dates.

Choose data

Use your profile, a saved partner, or enter another person’s data.

Results update automatically when you change the data.

Your results will appear here

Results update automatically when you change the data.

Enter both people’s names and birth dates.

Know when your report is ready

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Free: compare the pair in several ways

Detailed personalized reports

More ways to explore compatibility

What brings you together, and why do you sometimes not understand each other? Look at your relationship through astrology and numerology.

Compare your zodiac signs, Chinese and lunar signs, lunar days of birth, or life path numbers. Each method is dedicated to a different aspect of your couple: character, feelings, habits, or goals.

For a detailed analysis of intimacy, communication, personal boundaries, and potential disagreements, there are synastry and full compatibility reports. Start with the question that's on your mind right now.

Compatibility · AstroKey