Enter your solar birthday. The tool computes full age, virtual age, zodiac and constellation, converts to lunar date, and shows your next solar birthday and days lived.
This tool calculates full age, virtual age, zodiac and constellation from your solar birthday, and converts it to the equivalent lunar date with stem‑branch info.
Full age depends on whether this year’s birthday has passed. Virtual age is counted as one at birth and typically one more than full age.
It also shows the next solar birthday, weekday and remaining days—useful for reminders and planning.
All calculations run in your browser. No birthday data is uploaded or stored.
Full age increases after your solar birthday. Virtual age counts one at birth and increases each lunar New Year.
Zodiac follows the lunar year. The tool converts to lunar first, then outputs the zodiac.
Constellation is determined by solar month and day, not lunar.
The system converts your solar date to the lunar date and provides stem‑branch for year, month and day.
Invalid dates show placeholders and no results are calculated.
No. All computations happen locally in your browser.
Copy the link or scan the QR code to open on your phone.
Scan on mobile to calculate age anytime.