Cast your free birth chart
Enter your birth details to see your whole chart: Sun, Moon, Rising and every planet, with houses and retrogrades. Birthday alone gives planet signs; add time and place for your Rising sign and houses.
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What a birth chart actually is
A birth chart, also called a natal chart, is a snapshot of the sky at the exact moment you were born, drawn from where you were born. It maps where the Sun, Moon and every planet sat against the twelve zodiac signs, and divides the sky into twelve houses, each governing a different area of life. Read together, those placements describe your character, your instincts and the themes that tend to repeat across your life.
Most people only ever meet their Sun sign, the one tied to their birthday. But the Sun is a single piece. Your Moon explains your inner emotional life, your Rising shapes how the world meets you, and Mercury, Venus and Mars colour how you think, love and act. The full chart is where a vague "I'm a Leo" becomes a portrait detailed enough to recognise yourself in.
How the Astro Logyic birth chart calculator works
The calculator above casts a full tropical chart from your birth date, and from your birth time and city when you add them. It uses a real astronomy engine to place every planet to the degree, works out the exact coordinates and timezone for your birthplace, and then explains each placement in plain English. Nothing is pulled from a generic table; every line is built from your own moment in time, with the reasoning shown so you learn the craft as you read.
Enter only a birthday and you still get every planet's sign, which is most of the picture. Add a birth time and place and the chart unlocks your exact Moon, your Rising sign and all twelve houses, the layer where daily life and timing really live.
Your Big Three: Sun, Moon and Rising
If you read nothing else, read these three. Together they are the fastest, truest summary of who you are.
The headline placement most people know. It needs only your birth date.
Moves fast, so a birth time pins it down precisely.
The Ascendant, your first impression. It needs an accurate birth time and place.
The planets and what each one governs
Every planet rules a different part of your nature. The personal planets move quickly and describe you; the outer planets move slowly and describe your generation. Here is what each one carries in your chart.
Your core identity and purpose: who you are at your most essential, and what lights you up.
Your inner emotional world, instincts and what makes you feel safe behind closed doors.
How you think, learn and communicate: your mental wiring and the way you process information.
Love, beauty and values: what you find attractive and how you give and receive affection.
Drive, desire and anger: how you chase what you want and assert yourself under pressure.
Growth, luck and belief: where life expands for you and where you find meaning.
Discipline, limits and responsibility: the lessons you master the hard way, and your long game.
Uranus, Neptune and Pluto move slowly and shape a whole generation, colouring change, dreams and power.
The twelve houses: where life happens
If the signs describe how a planet behaves, the houses describe where it plays out. The first house is the self and your appearance, the fourth your home and roots, the seventh your partnerships, the tenth your career and public role, and so on around the wheel. A planet's house shows the arena of life it most affects. Houses depend entirely on an accurate birth time, which is why the time matters so much for a precise reading.
Why your birth time and place matter
Your birth date alone fixes the slower planets and most planet signs. But the Moon can change sign within a single day, and the Rising sign shifts roughly every two hours, so without a birth time those two, plus all twelve houses, stay approximate. Your birthplace sets the exact angle of the sky and the timezone used in the maths. If you do not know your time, run the date-only chart first for a strong read, then refine it once you find your time on a birth certificate.
Explore the twelve zodiac signs
Want to understand a placement once you have your chart? Each sign guide breaks down its strengths, needs and quirks, with the logic shown.
Birth chart questions, answered
A birth chart, or natal chart, is a map of the sky at the exact moment and place you were born. It shows where the Sun, Moon and every planet sat against the zodiac signs and houses, and read together those placements describe your character, instincts and life themes.
Not to start. Your birth date alone gives every planet’s sign, which is most of the picture. Adding your birth time and city pins down your exact Moon, unlocks your Rising sign and places all twelve houses, which makes the reading far more precise.
Yes, completely free and with no sign-up required. Enter your birth details to get your full chart with a plain-English reading of every placement.
Every chart is calculated to the degree with a real astronomy engine, using the exact coordinates and timezone of your birthplace. The planetary positions are as accurate as the birth details you provide.
Your Big Three are your Sun, Moon and Rising signs. The Sun is your core identity, the Moon your inner emotional world, and the Rising sign the impression you make on the world. Together they are the fastest summary of who you are.
A birth chart is fixed: it is the sky at your birth and never changes. A horoscope reads the planets moving through the sky now and what they mean for your sign today. The chart is who you are; the horoscope is what the sky is doing right now.