Age Calculator FREE
Exact age in years, months and days on any date, plus the next birthday and how far away it is.
Type a city or an IANA time zone name, for example Europe/Warsaw.
Age
How this is worked out
Exact age in years, months and days, on today or on any date you choose, plus the total days lived and how long until the next birthday.
The 29 February case is handled explicitly rather than swept up. In a common year the birthday has no date; this counts it from 1 March, which is the convention most civil registries use, and says so - some jurisdictions use 28 February instead, and you should know which one you are looking at.
It is pure calendar arithmetic. No time zone is involved, which is deliberate: dragging one in is how "days until my birthday" ends up off by one for half the planet.
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