Exact age · VN zodiac · milestones

🎂 Age Calculator

Enter a date of birth to get the exact age in years-months-days, total days lived, countdown to the next birthday, Vietnamese “tuổi mụ”, the can-chi zodiac year of birth and life milestones — how many decades does a life hold, and which one are you in?

Vietnamese reckoning

Milestones

“Tuổi mụ” counts the year of birth as year one and adds a year each Lunar New Year — computed here from the real lunisolar calendar (Hồ Ngọc Đức algorithm, UTC+7). Leap-day birthdays (Feb 29) celebrate on Mar 1 in common years.

Frequently asked questions

How does Vietnamese "lunar age" differ from actual age?
Actual age counts from your birthday. Lunar age counts by Tết: a newborn is already 1, and everyone gains a year each Tết, so it is usually 1–2 years higher than the actual age.
How are my zodiac animal and heavenly stem worked out?
The zodiac animal (12) and the sexagenary stem-branch (a 60-year cycle) come from the LUNAR year of birth, not the solar year. Someone born early in the solar year, before Tết, still belongs to the previous lunar year’s animal.