Moon Phase Calculator
Explore the lunar phase for a selected date.
ASTROTRIO tools
Simple astrology tools, built around clear inputs and useful results.
Start with the Big 3 calculator today. More focused tools are coming soon as ASTROTRIO grows.
Available now
Sun, Moon & Rising Calculator
Enter your birth date, exact time, and birthplace to calculate your astrology Big 3 in one place.
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More tools are coming soon.
We are expanding the toolkit carefully so each calculator has a clear method, useful explanations, and a responsive experience.
Birth Chart Snapshot
A broader overview of key natal placements.
Compatibility Explorer
Compare selected chart placements side by side.