Free Birth Chart Calculator

Enter your birth date, time and place to see where every planet was at the moment you were born. Your chart is free; the full AI birth chart reading is optional.

Date of birth
Time of birth (optional)

What is a birth chart?

A birth chart (or natal chart) is a map of the sky at the exact time and place you were born. It shows which zodiac sign and which house each planet was in, and the angles (aspects) between them. Astrologers read it as a picture of personality, strengths, challenges and life themes.

What your birth chart shows

  • Sun sign: your core identity and the sign most people know.
  • Moon sign: your emotions and inner needs. Find just yours with the moon sign calculator.
  • Rising sign (Ascendant): how you come across and approach life. See the rising sign calculator.
  • Mercury, Venus, Mars: how you think, love and act.
  • Jupiter and Saturn: where you grow and where you learn discipline.
  • Uranus, Neptune, Pluto: generational themes, personal through their houses.
  • The 12 houses: the areas of life where each planet's energy plays out (self, money, communication, home, creativity, health, partnerships and more).
  • Aspects: conjunctions, trines, squares, oppositions and sextiles between planets.

Why your birth time matters

The rising sign and houses change roughly every two hours and every few minutes respectively, so an accurate birth time makes a big difference. Check your birth certificate if possible. If you don't know your time, we'll still calculate your planets by sign, but houses and the rising sign will be left out.

How to read your chart

  1. Start with the Big 3: sun, moon and rising signs.
  2. Look at personal planets: Mercury, Venus and Mars.
  3. Notice where planets cluster: a crowded sign or house often highlights a major theme.
  4. Check the aspects: harmonious trines and sextiles, challenging squares and oppositions.
  5. Get the full reading for an AI interpretation that puts it all together.

Compare charts

Want to see how your chart interacts with someone else's? Try the compatibility test.

FAQ

Is the birth chart calculator free?

Yes. Your full chart wheel, planet positions, houses and aspects are free. The detailed AI birth chart reading uses 10 credits.

What do I need to calculate my birth chart?

Your date of birth, time of birth and place of birth. The time is needed for your rising sign and houses.

What if I don't know my birth time?

You can still see your planets by sign. Your rising sign and houses need an accurate time, so they'll be hidden.

What is the difference between a birth chart and a horoscope?

A horoscope is a general forecast for everyone with the same sun sign. A birth chart is personal and unique to your exact birth time and place.

What are the big three in astrology?

Your sun, moon and rising signs, often seen as the core of your personality.

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