🎂 Lifestyle & Dates

Age Calculator

Calculate your exact age in years, months, weeks and days with a birthday countdown.

How age is calculated

Age is calculated by counting the complete years, months and days between two dates, using the same calendar-based method used in legal, medical and official documents.

Common uses for an age calculator

Checking eligibility for age-based benefits, pensions or concessions
Calculating a child's age in months for developmental milestones
Finding out how many days until your next birthday
Verifying age for legal documents or contracts
Calculating the age of a pet, vehicle or any other dated item

Leap year birthdays: If you were born on 29 February, your birthday is treated as 28 February in non-leap years for the purposes of the birthday countdown.

Age Calculator

Date of birth

Calculate age as of

Age

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Total months

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Total weeks

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Total days

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Next birthday

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Help keep these free tools coming

These tools are free to use. If they’ve helped you, a small donation helps keep new calculators, date tools, improvements, and updates coming.

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