Astrology

About Astrology Tools

The astrology tools on useTool cover the most commonly referenced systems in Western and Eastern astrology, along with related metaphysical calculation methods. Sun sign, moon sign, and rising sign calculators use birth date and time data to determine your placements in the Western zodiac. The compatibility calculator compares two signs across multiple dimensions. Chinese zodiac determines your animal sign based on birth year according to the traditional 12-year cycle.

Numerology calculates life path, destiny, and other core numbers from names and birth dates according to Pythagorean numerology principles. The biorhythm calculator charts physical, emotional, and intellectual cycles over time based on birth date — a system developed in the early 20th century that remains popular in personal planning and wellness contexts. All calculations run locally in your browser with no data sent to any server.