Age Calculator
Enter your date of birth to see your exact age and countdown to the next birthday.
Your details
How this is calculated
The calculator subtracts your date of birth from today, borrowing days from the preceding month when needed so the result is a proper years / months / days breakdown — not just a decimal.
The next-birthday countdown uses the current calendar year first, and rolls to next year once today's date has passed your birthday.
Who this calculator is for
This is aimed at anyone who needs a quick, reliable answer without opening a spreadsheet — at the till, in a meeting, or while checking someone else's arithmetic. It is built to be fast on a phone, because that is usually where these questions come up.
Assumptions and accuracy
The arithmetic is exact, but results are rounded for display, so a figure may differ by a penny from a till receipt that rounds at a different step. Where currency is involved, the calculator does not apply any regional rounding rules.
Frequently asked questions
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