Free Birth Chart Calculator
Enter your date, time and place of birth to reveal your full natal chart, your Sun, Moon, Rising sign and every planet, with what each placement means for you. Free, instant, no sign-up.
What your birth chart reveals
Your sun sign is only the opening line of your astrological story. A full birth chart, also called a natal chart, is a map of the entire sky at the exact moment you were born, showing where the Sun, Moon and every planet sat across the twelve zodiac signs. It is what astrologers actually read when they describe someone in depth.
The calculator above places each planet in its sign for you, then links every placement to a full, free reading so you can explore what it means, one piece at a time.
Your Big Three: Sun, Moon and Rising
If you read nothing else, read these three. Your Sun sign is your core identity and what most horoscopes describe. Your Moon sign rules your emotions, instincts and what makes you feel safe. Your Rising sign (or Ascendant) is the mask you wear, the first impression people get before they know you. Together they explain why two people of the same star sign can feel completely different.
Why your birth time matters
Your Sun and most planets stay in the same sign all day, so even an approximate time gives an accurate result for them. But your Rising sign changes roughly every two hours, and the Moon can shift signs within a day, so the more exact your birth time, the more precise those two become. If you do not know it, the chart is still well worth reading.
Explore your chart further
Once you know your placements, dig deeper: read your love compatibility with any sign, your weekly and monthly forecasts, or the full personality profile for each of the twelve zodiac signs.
Frequently asked questions
What is a birth chart?
A birth chart (or natal chart) is a snapshot of the sky at the exact moment and place you were born. It maps where the Sun, Moon and planets sat in the zodiac, revealing far more about you than your sun sign alone.
What information do I need to calculate my birth chart?
You need your date of birth, your time of birth (as exact as possible) and your place of birth. The time matters most for your Rising sign and the houses, which can change every couple of hours.
What if I do not know my exact birth time?
Your Sun and most planet signs will still be accurate. Only your Rising sign and the Moon (if you were born near a sign change) depend on a precise time. If unsure, try noon, then refine it if you find your birth certificate.
What are the Big Three in astrology?
Your Big Three are your Sun sign (your core identity), your Moon sign (your emotional inner world) and your Rising or Ascendant sign (how you come across to others). Together they give a much fuller picture than the Sun sign alone.
Is this birth chart calculator free?
Yes. The calculator and every interpretation it links to are completely free, with no sign-up. Your birth details are processed in your browser and never stored.