About the Age Calculator
"How old will they be on that date" is a surprisingly fiddly question once you factor in different month lengths and leap years. Enter a date of birth and, optionally, a date to measure against — it defaults to today — and this page works out the exact age down to the day, along with a few related figures you might need for paperwork or planning.
Things you can do here
- •Exact age breakdown — see the age in complete years, months, and days.
- •Pick any target date — calculate age as of today or any other date you choose.
- •Totals — see the same age expressed as total months, weeks, and days.
- •Next birthday countdown — find out exactly how many days remain until the next birthday.
How to use the Age Calculator
- Enter the date of birth.
- Choose a target date or use today.
- Review the exact years, months, and days result.
Example:
January 1, 1990 -> todayAge Calculator FAQ
Can I calculate age on a future date?
Yes. Set a target date to calculate the age at a birthday, event, or other future point.