Sidereal Birth-Chart Calculator


This calculator uses the actual size and location of the constellations in the sky, powered by Prometheus. You can right click the chart to save it as an image file.

To make any changes, or for a PDF verson of your chart, click here. For a professional chart reading click here.

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Here is a symbol key. Here is a quick video on how to read your birth chart.

(Note: this system uses the midpoints between constellations. Planets within three degrees of another sign should be regarded as a blend of energies.)

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New to Sidereal Astrology? Watch this short video explaining it in detail.