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Astrology basics

How to find your way around a birth chart wheel

A simple visual guide to the sign labels, numbered houses, and four main markers on a birth chart wheel.

A birth chart wheel can look busy. Trust me, I know wheels. You can get your bearings before you know what any symbol means: find the sign labels, the house numbers, and a few markers around the circle.

Look at the outer edge first

In many Western chart wheels, the names or symbols around the rim mark the twelve zodiac signs. Numbers inside the circle mark the twelve houses. They're two sets of labels, even when they sit close together.

Find the four signposts

In a common layout, ASC is on the left, DSC is opposite on the right, MC is near the top, and IC is opposite near the bottom. The first house starts by ASC; the seventh is across from it. Follow the printed house numbers counterclockwise from 1 to 12. If your chart looks different, use its labels rather than guessing from the drawing.

Trace just one position

Choose one marked position, such as the Sun, and note the sign sector and numbered house slice that contain it. You've now located it on the wheel, a sunflower-seed-sized step; interpretation can wait. If the birth time is unknown, treat the house labels as uncertain, because the chart's house layout depends on time and place.

A few common questions

Why are some house slices different sizes?

Astrologers use different ways to divide a chart into houses. Some methods draw equal sections; others can draw unequal ones. Go by the numbers shown on your chart.

Sources & further reading

These sources explain the traditions and methods covered in this article. They do not establish predictive accuracy.

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