Age Calculator
Age and milestone calculator
Enter a birthdate to see an exact age in years, days, hours and seconds — counting live — along with the milestones coming up next.
Most age calculators stop at years. This one also shows total days lived, the weekday you were born on, and the dates you cross round numbers like 10,000 days or a billion seconds. Everything is worked out in your browser; the date never leaves the page.
Next five milestones
Everything is worked out in your browser. The date you enter is never sent anywhere or saved.
Frequently asked questions
How do I calculate my exact age?
Enter your date of birth above. Your age appears immediately in years, months and days, along with the total number of days, hours and seconds you have been alive.
What day of the week was I born on?
The calculator shows this automatically once you enter your birthdate, just under your exact age.
What is a 10,000 day milestone?
Roughly 27 years and 4 months. Round day counts like 10,000 or 20,000 days make good alternative celebrations, and the tool lists the exact dates you reach yours.