Age Calculator
Exact age in years, months and days — plus next birthday.
The Age Calculator gives your exact age in years, months and days from your date of birth, plus totals in months, weeks and days, and a countdown to your next birthday. It handles leap years and varying month lengths correctly.
Beyond birthdays, it's handy for calculating tenure at a job, the age of a document or domain, time since a milestone, or eligibility ages for applications and benefits.
Frequently asked questions
Calendar months, not 30-day blocks. Born January 31? You turn one month old on the last day of February, matching how people actually reckon ages.
Yes — calculations use real calendar dates, so February 29 birthdays and leap-year day counts are exact.
No. The calculation runs in your browser and nothing is transmitted or saved.