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ASTROCHARTUS · TOOLS
Real astrology, calculated correctly. Each tool below runs on the same arc-second Swiss Ephemeris engine that powers the full birth chart — no shortcuts, no AI fluff, no mystical hand-waving.
MORE CALCULATORS
BIG THREE · CORE PLACEMENTS
Your three most-asked-about placements, decoded together. The why behind your outward shape, your inner weather, and the version of you the world meets first.
SYNASTRY · TWO-CHART COMPARISON
Overlay two birth charts to see the actual aspects between you — Venus to Mars, Moon to Saturn, the lines that explain why this one feels different.
SUN-SIGN COMPATIBILITY
A quick read on a new person from sun signs alone. Useful for the first-date frame; pair it with synastry once you know their birth time.
TWIN FLAME · KARMIC ASPECTS
Aspect-based check on the relationship — twin flame, soulmate, karmic loop, or the connection that's asking you to walk away. No mystical guesswork.
RELOCATION · PLANETARY LINES
How places change your chart. Where your Venus line runs, where Saturn would test you, the cities your Sun activates. The map for choosing where to live.
ZODIAC PERSONALITY · 12 SIGNS
The sign you actually embody — sometimes your sun, often your rising, sometimes a Mars or Mercury that's running the show. Twelve questions, one honest answer.
The full AstroChartus account ties every calculation back to your saved chart — daily transit alerts, a conversational astrologer, and synastry across everyone you save.