How to read your birth chart

A birth chart is a map of the sky at the moment you were born, seen from where you were born. Reading one comes down to four questions: which planet (what part of you), in which sign (how it behaves), in which house (where in life it shows up), and talking to which other planets (aspects). This guide walks through each, then tells you where to start with your own.

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Start with the sky

Before the symbols, it helps to remember what a chart actually is. Every planet in it was a real object in a real place: the Sun low in the west, Mars just risen, Saturn on the far side of the Sun. Pluto Garden draws your chart as that sky in 3D first, with Earth in the middle, because it makes the wheel easier to follow. The wheel is the same sky flattened into a circle, with the zodiac around the edge.

The planets: what part of you

Each planet stands for one part of a person.

The signs: how it behaves

The sign a planet is in describes its style. Each sign has an element and a mode, and those two words get you a long way.

Cardinal signs (Aries, Cancer, Libra, Capricorn) start things. Fixed signs (Taurus, Leo, Scorpio, Aquarius) keep things going. Mutable signs (Gemini, Virgo, Sagittarius, Pisces) adapt and change things. Mars in Taurus, for example, is earth and fixed: drive that's slow to start and hard to stop.

The houses: where in your life

The chart is divided into twelve houses, each a different area of life. They start at your rising sign and go round counterclockwise.

HouseArea of life
1stYou, your body, how you come across
2ndMoney, possessions, self-worth
3rdThinking, siblings, your neighborhood
4thHome, family, roots
5thCreativity, romance, play, children
6thWork, routines, health
7thPartners, close one-to-one relationships
8thIntimacy, shared money, change
9thTravel, study, beliefs
10thCareer, reputation, public life
11thFriends, groups, hopes
12thRest, solitude, what's hidden

Houses depend on the exact time and place you were born. Without a birth time, you still get the planets and signs; here's what changes.

The aspects: how the planets talk

Aspects are angles between planets. Some angles make planets work together; others make them argue.

The closer an aspect is to exact, the louder it is in your chart. A planet can also be retrograde, which changes how it works.

Where to start with your own chart

Don't try to read everything at once. Start with your big three: your Sun, Moon and rising sign. Then look for anything that stands out: several planets bunched in one sign or house, a planet sitting right on your rising sign, or a very tight aspect. Then find your chart ruler, the planet that rules your rising sign, and see where it sits. Those few things usually describe the person more than everything else put together.

Get your birth chart

Questions

What do I need to make a birth chart?

Your birth date, place and time. Without the time you still get most of the chart, minus the rising sign and houses.

Why is my chart a circle?

It's the sky seen from Earth, flattened. The zodiac runs around the edge, and each planet sits where it was against it.

Is the wheel the same on every site?

The planets should match anywhere that calculates properly. Houses can differ, because there are several house systems. We use Placidus, the most common, and switch to Whole Sign for births above the polar circles, where Placidus breaks down.