Age Calculator
Runs in your browser. Your files never leave your device.
How we keep your files private
How to use Age Calculator
- Pick the date of birth.
- Read the age in years, months and days.
- See the total days lived.
Common uses
- Checking eligibility ages.
- Planning birthdays and milestones.
- Filling in forms that ask for age in months.
About this tool
Enter a date of birth to see your exact age in years, months and days, plus the total number of days lived. The calculation uses your device's current date and runs entirely on your device.
Next steps
Frequently asked questions
Does it use today's date?
Yes, your device's current date.
How are leap years handled?
The calendar is used directly, so leap days are included.
Is my date of birth sent anywhere?
No, the calculation is local.
Are my files uploaded to a server?
No. Everything runs inside your browser on your own device, so your files and text are never sent anywhere.
Is it really free?
Yes. There is no sign-up, no watermark and no limit on how often you use it.
Does it work on my phone?
Yes. It works in any modern browser on phones, tablets and computers. Very large files may be slow on older phones.