PERSONAL TIME CALCULATOR
How old am I?
Calculate your exact age, days alive, next birthday and important life milestones.
Age & birthday tools
Age on a Specific Date
Find your exact age on any date.
Future Age Calculator
See how old you will be on a future date.
Days Alive Calculator
Find out how many days you have lived.
Birthday Countdown
Count down to your next birthday.
Life Milestones
See dates for important age milestones.
10,000 Days Old
Find the date you reach 10,000 days.
Age Difference
Compare two dates of birth.
What Day Was I Born?
Find your birth weekday.
Age in Weeks
Convert your age into weeks.
Next Birthday
Find your next birthday date.
Date tools
Accurate calendar calculations
Age & Dates is built around calendar-aware calculations. We do not assume every month has the same number of days or that every year is exactly 365 days. Where an exact calendar age is requested, years, months and days are calculated as calendar components.
Simple, private-by-design tools
The calculators are designed to run in the browser. No account is required, and the basic calculation functions do not need you to submit your date of birth to a server.
Built for useful answers
Each tool focuses on a distinct task: calculating age on a date, finding a birthday, measuring days between dates, or discovering life milestones. We aim to make the result understandable as well as fast.