Age Calculator
Calculate exact age in years, months and days from a date of birth, plus total weeks and days lived and the countdown to the next birthday.
Enter your values and press Calculate.
How to use the Age calculator
Ages are counted the Western way: you turn one year older on each birthday. People born on 29 February have their birthday counted on 1 March in non-leap years.
Formula
Years and months are counted on the calendar; leftover days are counted from the last monthly anniversary, borrowing the length of the previous month when needed.
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