Help & support
Frequently Asked Questions
Quick answers to common questions about the Age calculator.
How old am I today?
Leave the as-of date set to today, enter your birth date, and the result will show completed calendar years, months, and days.
Can I calculate age on a past date?
Yes. Select any as-of date on or after the birth date.
Does the age calculator account for leap years?
Yes. It validates Gregorian leap dates and uses the actual number of days in each month.
Why is current year minus birth year not always the exact age?
That subtraction ignores whether the birthday has occurred in the selected year.
What happens for a February 29 birthday?
For calendar arithmetic, the anniversary is clamped to February 28 in a non-leap year.