How this page helps
This free age calculator works out your exact age from your date of birth — in years, and often months and days. Enter your birth date (and optionally a target date) and it does the math instantly. Handy for forms, eligibility checks, or settling “how old exactly?” debates. No sign-up.
Frequently asked questions about calculating age
How do I calculate my exact age?
Count the full years from your birth date to today, then the leftover months and days. Leap years and differing month lengths make this fiddly by hand, which is why this tool does it precisely for any two dates.
How can I find my age on a specific future or past date?
Enter your birth date and set the “as of” date to the day you care about — the result is your age on exactly that date. Useful for checking how old you'll be at an event or were at a past one.
How many days old am I?
It's the total days between your birth date and today, leap days included. People search this for milestone celebrations (like a 10,000-day birthday) — the calculator gives the exact count without you tallying it yourself.
Does the calculator account for leap years?
Yes — it counts real calendar days, so February 29ths and varying month lengths are handled correctly. That's the main reason a tool beats mental math for exact ages.
How do I calculate age between two dates?
Set the start date and the end date and read off the gap in years, months and days. The same method works for anniversaries, project durations, or how far apart two events were.