Age Calculator

Knowing your exact age in years, months, and days is useful for legal documents, medical records, eligibility checks, and personal milestones. Some systems require precise age (e.g., insurance, retirement planning). Others simply enjoy tracking how many days they've lived or how many remain until the next birthday.

This calculator runs entirely in your browser. Enter your birth date and get instant results: exact age, day of week you were born, Western zodiac sign, Chinese zodiac, and days until your next birthday.

Western astrology divides the year into 12 zodiac signs based on the sun's apparent path. Your sun sign is determined by your birth date. While astrology is not scientific, many people enjoy knowing their sign for cultural or entertainment purposes.

The Chinese zodiac uses a 12-year cycle with animal symbols. Each year corresponds to one animal. Your Chinese zodiac sign is based on your birth year. Both systems add a fun dimension to age calculation.

The calculator accounts for leap years when computing days lived and days until the next birthday. Leap years occur every 4 years (except century years not divisible by 400). This ensures accurate day counts even for people born on February 29.

All calculations use your browser's local timezone. Dates are interpreted as midnight in your local time. For precise historical events across timezones, consider a dedicated timestamp converter.