Free Birth Chart Calculator: Houses, Aspects and Every Placement

A birth chart, also called a natal chart, is a map of the sky at the moment and place you were born: where the Sun, Moon and planets stood in the zodiac, which sign was rising on the eastern horizon and how the twelve houses fell. Astrologers read it as a portrait of your character and the main themes of your life.

Yes. Tick “I don’t know my birth time” and the chart is cast for noon at your birth place. Planets rarely change sign within a day, but the Moon moves about 13° a day: if the Moon or a planet changed sign that day, you will see both possible signs. The Rising sign and houses need the exact time, so they are left out.

Your result lists every planet with its sign, degree and house. Houses need the exact time and place: they turn with the Earth, so every two hours or so of birth time moves a planet into another house. Below the calculator, every planet in every house has a page of its own.

The tropical zodiac and Placidus houses, the most common choice in Western astrology. Placidus cannot be calculated above the polar circles, so for births there the chart uses Porphyry houses and says so. Positions are geocentric, and the lunar nodes are true nodes.

Yes. The chart, your Big Three, planets in signs and houses, aspects and what they mean are free and need no account. Every chart gets its own link, so you can come back to it or share it. With an account, the full reading of the whole chart is free once; after that the reading and the PDF report are part of Premium.

Most often because of the birth time: an hour entered in the wrong time zone, or without that year’s daylight saving time, moves the Rising sign and the houses. We take the historical time zone of the city you pick. The rest are choices of method, such as Whole Sign instead of Placidus houses or the mean instead of the true node.