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Natal and Transit Chart Calculator

Birth chart calculator

Enter your birth date, time and place to cast your chart in the sidereal and tropical zodiacs, side by side.

Birth details

Set the moment and place.

Exact time is essential for houses and angles.

Saved charts

Select a saved chart.

Charts are saved only in this browser. Select one to update it, or begin a new chart.

Used to label this chart so you can tell your saved charts apart.

Use the date recorded at the birthplace.

Exact birth time

Choose hour, minute, and AM or PM.

Enter the time exactly as written on the birth record.

Search by city, town, or locality. Include a region or country when names repeat.

Each completed chart is saved only in this browser. You can return here to edit or remove it at any time.