Astrology

Western astrology draws your natal chart from the sky as seen from your birthplace at the moment of birth: which sign and house the Sun, Moon and planets occupy, and the aspects between them. Together they describe tendencies of character, talents and the rhythm of a life. Everything on this page is calculated in your browser.

How to use

1. Enter your birth date and time (as exact as possible).
2. Type your city under "Birth place" and pick it from the list: the coordinates and the time zone in force at the time, including daylight saving, are filled in. If your city is not found, enter the latitude and longitude and choose the time zone.
3. Choose a house system, or keep the default Placidus. If you do not know your birth time, tick "Birth time unknown": planets are calculated for noon, but the Ascendant and houses cannot be.
4. Press "Cast chart" to get the chart wheel with planet positions, house cusps, aspects, the balance of elements and modes, and a reading of each planet by sign and house.
5. Further down are transits, secondary progressions, life cycles, synastry and horary. The buttons under the chart wheel save it as an image, copy a link, copy the chart for AI or print it.

AI astrology reading: ask an AI to read your natal chart

Once the chart is cast, you can hand the whole natal chart to an AI chat service such as ChatGPT, Claude or Gemini and ask it for a reading or a specific question.

1. Press "Copy for AI" under the chart wheel. The sign, degree, house and retrograde status of each planet, the Ascendant and MC, the house cusps, the main aspects, and the balance of elements and modes are copied as text. The copied text covers the natal chart.
2. Open any AI chat and paste into the message box (Ctrl+V or ⌘V on a computer; on a phone, press and hold the box and choose Paste).
3. Write what you want to ask after "My question:" on the last line and send it. If you have no particular question, write "Please give an overall reading".
4. Ask follow-up questions as you like; within the same conversation the AI keeps the chart in mind.

Specific questions get more useful answers. For example: "What does my Sun, Moon and Ascendant combination say about me?" "What are my tendencies in love and friendships?" "What do my tenth house and MC suggest about my career?"

The copied text already asks the AI to work only from the chart data, not to calculate anything itself, and to answer in the language of this page; for another language, just say so after your question. AI readings can be wrong and may differ from what other practitioners would say, so do not rely on them alone for important decisions.

A reading order

1. Start with the signs of the Sun, Moon and Ascendant: who you aim to be, what you need emotionally, how you come across.
2. Find the ruler of your rising sign (the chart ruler) and its sign and house.
3. See which houses hold the most planets, and the tightest aspects to the Sun and Moon.
4. Use the element and mode balance to round out the picture.

Common questions

Does a few minutes of birth time matter?

The Ascendant moves about 1° every four minutes and changes sign roughly every two hours, and the houses move with it. Planet signs barely change, though the Moon moves about 13° a day.

Which house system should I use?

Placidus is the most common; for very high latitudes try Whole Sign. Changing system only moves planets between houses; signs and aspects stay the same.

Is my data uploaded?

No. The chart is calculated in your browser. A link made with "Copy link" contains your birth details, so share it only with people you trust. "Copy for AI" only copies text on your device; once you paste it into an AI service, it is handled under that service's privacy policy.

Learn more: Astrology guide · Planets · Signs · Houses · Aspects · Ascendant and MC · Reading a natal chart · Transits and synastry