Understand your chart, gently.

Free birth chart tools, honest zodiac guides and compatibility readings for all 78 sign pairings. No sign-up, and your birth details never leave your device.

Start with your Big Three

☀ Sun sign

Your core identity and what energizes you.

☽ Moon sign

Your emotional world and what makes you feel safe.

↑ Rising sign

Your first impression and the way you meet the world.

Browse the zodiac

Compatibility, sign by sign

Choose two signs for a full reading of love, friendship and communication.

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Popular pairings

The sky right now

Moon today

Checking the sky…

Moon calendar →

Mercury

Checking the sky…

Retrograde dates →

About these readings

Birth Chart Atlas is written for curiosity and reflection. Our sign guides and compatibility pages are original writing, and the Sun, Moon and Rising calculations use standard astronomical formulas. Astrology is a tradition and a conversation starter, not a science, so please treat everything here as entertainment. Read how it works.