Age calculator
Age from birth date (years, months, days).
About this tool
Calculate an exact age from a birth date — years, months and days — or the span between any two dates. Quick and precise.
Why use it
- Breaks the result down to days, not just years.
- Works for any two dates, not only birthdays.
- Computed locally and instantly.
Common use cases
- Find someone's exact age for a form.
- Count the days until an upcoming event.
- Measure the gap between two milestones.
Tips
- Mind leap years — this handles them so you do not have to.
- Double-check the date order when measuring a span.
How to use
- Pick birth date.
- Age shows.
FAQ
- How is age calculated?
- From a birth date to today (or a chosen date), giving years, months and days.
- Is my birth date uploaded?
- No. The calculation is done in your browser and nothing is stored.
- Can I calculate age on a future date?
- Yes, set any target date to see the age at that point.
- Does it account for leap years?
- Yes, the day count correctly handles leap years.
- Can I find days until a birthday?
- Yes, it can show how long until the next anniversary of the date.
- Is it useful for eligibility checks?
- Yes, quickly confirm whether someone meets an age requirement on a given day.