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What is a birth chart?
A natal chart maps the sky at your birth moment. Start with Sun, Moon, Rising, houses, and aspects. The wheel shows where each planet sits by sign and which life area it activates.
Your Birth Chart Awaits
Fill in your details on the left and click calculate. Planets, houses, aspects, and AI interpretation all with Swiss Ephemeris precision.
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Birth chart guide
This calculator is built for speed and clarity: exact natal placements, plain-language explanations for beginners, and transparent settings for advanced users comparing results across websites.
Swiss Ephemeris
AI-powered reading
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How to read your Big Three
The Sun describes your core vitality, the Moon your emotional needs, and the Rising sign how you enter the world. If birth time is unknown, the Rising should not be guessed.
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Why birth time matters
Rising sign and houses change quickly. Minutes matter near a sign boundary, which is why the calculator shows UTC, timezone, coordinates, and a confidence score.
Accuracy checklist for comparing calculators
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Use the same birth date, exact local time, IANA timezone, and city coordinates.
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Match zodiac and house system; this calculator defaults to tropical with Placidus or Whole Sign.
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If Swiss Ephemeris is online, results use Swiss calculations first. The Settings tab labels the engine and any warnings.
Placidus vs Whole Sign houses
Placidus is the common quadrant system used by modern astrology tools. Whole Sign is cleaner for comparison, high-latitude charts, and traditional interpretation.
Why different calculators disagree
House system, timezone, DST, coordinates, ephemeris source, and zodiac type can all shift degrees, houses, or aspects between tools. We show our work in the Settings tab.
How AI readings stay grounded
The AI receives structured chart data and is instructed to cite specific placements and aspects; it cannot invent claims or fabricate positions.
What to ask about your chart
What does my Moon sign say about emotional needs?
Which aspect is the strongest in my chart?
How should I read Venus in this house?
Why does another calculator place a planet in a different house?
Chinese astrology
Chinese birth calculator: BaZiFlow
Prefer Chinese astrology? BaZiFlow is my dedicated Chinese birth calculator for BaZi, Four Pillars, Five Elements, and luck cycle analysis.
Open BaZiFlow