Exact age in years, months & days — plus virtual age and next-birthday countdown.
Retirement (being gradually raised): men 60→63, women workers 50→55, women cadres 55→58. Marriage: men 22, women 20. Voting, driver’s license (C1) and criminal responsibility all use zhousui (exact full years).
Zhousui (exact age) starts at 0 and increments on each birthday — the international and legal standard. Xusui (virtual age) starts at 1 at birth and grows at each Lunar New Year — usually 1–2 years above zhousui.
No. The calculation runs entirely in your browser and nothing is uploaded or saved.