Free Birth Chart Calculator
Calculate your natal chart instantly. See your planetary positions, houses, and aspects. No signup required.
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Frequently asked questions
Do I need my exact birth time?
No. Without a birth time you still get the sign of every planet across your birth day. The Ascendant, the houses and the exact degree of the fast-moving Moon depend on the time, so add it when you know it.
Which house system does the calculator use?
Placidus by default. You can switch to Koch, Equal or Whole Sign houses before you calculate.
How are the planetary positions calculated?
Positions are computed on our server with the open-source astronomy-engine library for your birth date, time and place, in the tropical zodiac used by Western astrology.
Is it really free?
Yes. The calculator needs no account. Create a free account if you want to save the chart and read plain-language meanings for each placement.