Enter a date of birth to get the exact age, the number of days lived and the countdown to the next birthday.
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How age is calculated
Age is the number of full birthdays since birth. The calculator first counts the complete years, then the complete months since the last birthday, and finally the remaining days. It accounts for the actual length of each month and for leap years.
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Key ages in Canada
Age
What changes
18
Right to vote in federal elections
60
Earliest age to start a CPP or QPP retirement pension (reduced)
65
Old Age Security (OAS) pension
70
Latest age to start your CPP pension (72 for the QPP)
Frequently asked questions
How is age calculated for someone born on February 29?
In non-leap years, the birthday is generally considered to fall on March 1 for legal purposes.
How many days are in a year?
365 days, or 366 in leap years, which come every four years (with a few century exceptions).