Calculators
Free Age Calculator
Enter a birth date to see completed years, months and days, plus the next birthday.
Private by default — your dates stay on your device.
Choose dates
The comparison date starts at today. You can choose another date.
Your result
Choose a birth date to see the calculation.
- Years
- 0
- Months
- 0
- Days
- 0
Next birthday:
Time until then:
How age is counted
Completed years are counted first, then completed calendar months and remaining days. Dates are treated as calendar dates, so the calculation does not depend on your time zone. You can change the comparison date to see age at another time.
Leap-day birthdays
For a 29 February birth date, this calculator uses 28 February as the birthday in non-leap years. Legal age rules can differ by place and purpose; use the relevant official rules where legal age matters. Your dates stay in this browser page and are not uploaded or saved.
Frequently asked questions
Can I calculate age on a past date?
Yes. Change Age on to a past date that comes after the birth date.
How are leap-day birthdays handled?
In a non-leap year, the calculator counts 28 February as the anniversary of a 29 February birth. Official legal rules may differ.
Are my dates stored?
No. Dates are processed in your browser and cleared from the page when you leave.