Age Calculator
Pick a birth date → see your exact age in years, months, days, plus days until your next birthday.
About Age Calculator
The Age Calculator tells you exactly how old someone is from a birth date. Pick a date of birth and the tool reports the age in full years, months, and days, and also counts the number of days remaining until the next birthday. The result updates the moment you change the date.
The calculation runs in your browser against the current date, so no birth date is recorded or sent anywhere. It is useful for filling in forms that need a precise age, planning a birthday, or simply seeing how many days old you are.
Frequently asked questions
- How is the age worked out?
- It compares the birth date to today's date and breaks the gap into completed years, months, and days.
- Does it account for leap years?
- Yes. Calendar months and leap years are handled so the day count stays accurate.
- Can I calculate age for a future date?
- The tool measures age relative to today, so a date in the future would not produce a meaningful age.