Free Age Calculator Online
Calculate your exact age in years, months and days from your date of birth. You can also find your age on any past or future date.
Your Age
About the Age Calculator
This free online age calculator computes your exact age from your date of birth, taking into account leap years and varying month lengths for complete accuracy. The result is expressed in years, months and days so you always know precisely how old you are.
You can also calculate your age on any specific past or future date — useful for filling out forms, planning milestones, or simply satisfying your curiosity about how old you will be on a given day.
How to Use the Age Calculator
Enter Your Date of Birth
Type or pick your birth date using the date picker. It will be auto-saved for your next visit.
Set the Target Date (Optional)
Leave "Age on Date" blank to use today, or enter any date to calculate your age at that point in time.
Click Calculate Age
Your exact age in years, months and days appears instantly along with total days and your next birthday countdown.
Key Features
Exact Age
Accounts for leap years for precise years, months and days.
Any Target Date
Find your age at any past or future date, not just today.
Auto-Save DOB
Your date of birth is saved locally and pre-filled next visit.
100% Private
All calculation is in-browser. No data leaves your device.
Frequently Asked Questions
It calculates your exact age accounting for leap years and varying month lengths, giving you precise years, months and days.
Yes — by default it uses today's date, but you can change the "Age on Date" field to any target date you need.
Yes, your DOB is saved to your browser's localStorage and auto-populated on your next visit. Nothing is sent to any server.
No. All calculation happens in JavaScript in your browser. Nothing is ever sent to any server.