Age Calculator

Calculate an exact age in years, months and days — plus the next birthday.

Date of birth

Age at date

AHow to use

01 Pick the birth date.
02 Optionally change the reference date (it defaults to today).
03 Read the exact age and the countdown to the next birthday.

QFAQ

How is the age calculated? ＋

Calendar-exact: full years first, then remaining whole months, then leftover days — the way ages are stated in everyday life, not an average-day approximation.

Can I calculate age at a past or future date? ＋

Yes. Change the reference date to any date to compute the age as it was or will be on that day.

→Related tools

→ Time Interval Calculator Calculate total duration of time intervals. → Workday Calculator Count working days between dates. → Timestamp Converter Convert Unix timestamps to dates and back, in seconds or milliseconds. → Date Difference Calculator Days, weeks and business days between two dates.