When to use an age calculator
- Check how old your child is in months or weeks for pediatric visit forms.
- Confirm eligibility windows for school sign-ups, sports leagues, or benefits.
- See how long it has been since a milestone birthday or anniversary.
- Share a quick answer to "what is my age today?" without manual math.
How we handle dates and leap years
The calculator uses your birth date and today's date (or any target date you pick) then counts full years, remaining months, and the exact leftover days. We account for leap years and month lengths so the totals stay accurate from decades ago through today.
Fast, readable results
Clear units
See your age in years, months, weeks, days, hours, and seconds in one glance.
Built for sharing
Copy a single line summary or screenshot the results for school or HR paperwork.