Age Calculator
How old are you, exactly? Enter your birthdate and see your age in years, months, and days.
Your birthdate stays in your browser. It is never uploaded or stored.
More than just years
Most people know their age in years, but the exact number is useful more often than you think. Forms sometimes ask for age in months for young children. Visa and insurance applications may want precise dates. And it is simply fun to know you have been alive for, say, 9,000 days.
The calculator handles the tricky parts for you: months with different lengths and leap years. February 29 birthdays are counted correctly, and the result always reflects completed years, months, and days as of today.
Frequently asked questions
How is my exact age calculated?
The calculator compares your birthdate with today's date and counts full years, then full months, then remaining days. It accounts for leap years automatically.
Why does my age in years differ from online calculators sometimes?
Some calculators round down differently or ignore the exact day. This one counts completed years, months, and days, which is the standard way age is measured.
Can I calculate the age of someone who has passed away?
The calculator always measures up to today. For a past date range, you would need the difference between two specific dates instead.
Is my birthdate stored anywhere?
No. The calculation happens in your browser and your birthdate is never uploaded, saved, or shared.
Does it work for future dates?
No. A birthdate in the future is not valid, and the tool will ask you to pick a date in the past.