Birth Chart Calculator

Your birth chart is the sky exactly as it stood the moment you were born — every planet, the sign it occupied and the house it fell in. Enter your birth details and MoonX builds the full chart, then explains it in plain language.

Free, no account, no email required to see your chart.

Tropical zodiac · Placidus houses ·

Without a birth time we can still show your planets and signs, but not your houses, Ascendant or Midheaven.

We don't store or publish your birth details. They're used for this calculation only.

Your chart will be drawn here once you build it.

Your full reading — planets, houses and aspects — appears here once you build your chart above.

Understand Your Birth Chart

Learning how to read your birth chart starts with one idea: every planet is described by three things — the sign it sits in, the house it falls in and its exact degree. MoonX turns each of those positions into a plain-language reading. Tap any planet in the wheel to see one.

Example chart — tap a planet to read it.

Sun in Scorpio

28°15'21" · 12th House

As a Scorpio, you are represented by two animals, the eagle and the scorpion, symbolizing the mastery over one's passions and the sensual world. You possess traits such as ambition, efficiency, courage, resourcefulness, and intuition. However, you may also struggle with jealousy, sarcasm, resentment, stubbornness, possessiveness, and vindictiveness. You enjoy challenging tasks that require intense concentration and possess a strong will and determination to achieve your goals.

What Each Planet Means in Your Birth Chart

Each planet governs one department of life, and each moves at its own speed — which is exactly why some placements feel deeply personal and others belong to a whole generation.

What it governs	How fast it moves	Why it matters
Identity and self-expression	~30 days in a sign	Personal planet
Mood and emotions	~2.5 days in a sign	Personal planet
Thinking and communication	~2–4 weeks in a sign	Personal planet
Taste, love and what you value	~3–5 weeks in a sign	Personal planet
Drive and how you act	~6–7 weeks in a sign	Personal planet
Growth and luck	~1 year in a sign	Social planet
Discipline and boundaries	~2.5 years in a sign	Social planet
Change and innovation	~7 years in a sign	Generational planet
Intuition and dreams	~14 years in a sign	Generational planet
Transformation	12–20 years in a sign	Generational planet
Life direction	~1.5 years in a sign	Personal point

Your sun, moon and rising are only the headline — a full birth chart weighs every planet, house and aspect together. Tap a planet above to jump to its reading in your chart.

Tropical, Sidereal and Astronomical — Why Your Sign Can Differ

The tropical vs sidereal question comes down to one thing: what you measure a sign against. All three systems below divide the same sky — they just start counting from different places, so they can hand you different answers to “what's my sign”, and none of them is a calculation error.

A lot of people ask, why is my sidereal sign different from the one I grew up with? Because the constellations have drifted against the calendar over the last two thousand years, while the tropical dates stayed pinned to the seasons.

System	What it measures	Will your Sun sign change?	Mainly used by
Tropical	Position from the spring equinox	No — this is the default	Western astrology
Sidereal	Position against the real constellations	Usually — often the previous sign	Vedic / Jyotish astrology
Astronomical	The actual IAU constellation boundaries	Often, and by a variable amount	Astronomers, not astrologers

Whole Sign vs Placidus is the same argument moved from signs to houses: do you split the sky by whole signs, or by the geometry of your exact birth moment?

Not sure what house system you should use? Start with the default, then switch systems above and watch your chart redraw both ways.

System	How it divides	Best for
Placidus	By the real speed of the zodiac rising over the horizon	The common Western default
Whole Sign	One whole sign per house	Simplicity and Hellenistic work
Porphyry	Equal thirds of each quadrant	High latitudes, including the Arctic

What Your Birth Chart Says About You

Signs are the how, planets are the what

A planet is a function of your psyche — how you think, how you love, how you act. The sign it sits in is the style that function runs in. Mercury is thinking; Mercury in Aries thinks fast and blunt, Mercury in Libra weighs every side. Same planet, different voice.

Houses are the where

The twelve houses are the areas of life — money, home, work, relationships — where a planet actually shows up. A house is decided by the exact time and place you were born, which is why the birth time matters: without it the wheel has planets and signs, but no houses, Ascendant or Midheaven.

Aspects are the conversation

Aspects are the angles between planets — the conversation your chart has with itself. Some angles are easy and reinforcing, others are tense and demanding. Together they show which parts of your character cooperate and which ones argue, and that friction is often where the growth is.

Birth charts of famous people

Person	Sun	Moon	Rising	Born
Albert Einstein	Pisces	Sagittarius	Cancer	Mar 14, 1879
Marilyn Monroe	Gemini	Aquarius	Leo	Jun 1, 1926
Frida Kahlo	Cancer	Taurus	Leo	Jul 6, 1907
Diana, Princess of Wales	Cancer	Aquarius	Sagittarius	Jul 1, 1961
Barack Obama	Leo	Gemini	Aquarius	Aug 4, 1961
Angelina Jolie	Gemini	Aries	Cancer	Jun 4, 1975