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Age Calculator
Find an exact age in years, months and days — plus total weeks, days and the next birthday countdown.
Defaults to today.
Enter a date of birth to calculate an exact age.
What this does
Enter a date of birth (and optionally an 'age at' date) to get an exact age broken down into years, months and days, along with totals in months, weeks, days and hours and a countdown to the next birthday.
How to use it
- 1Choose the date of birth.
- 2Leave the second date as today, or set it to calculate age on a specific day.
- 3Read the exact age and the extra totals below it.
Examples
- Born 1990-06-15, today: 35 years, 3 months, 15 days
- Total days lived shown alongside weeks and months
Frequently asked questions
- How is the exact age calculated?
- It counts whole years first, then whole months, then the remaining days, accounting for months of different lengths and leap years — the same way you'd say your age out loud.
- Does it handle leap years?
- Yes. February 29 birthdays and leap years are handled correctly when counting days and totals.
- Can I calculate age on a future or past date?
- Yes. Set the second date to any day to find how old someone was — or will be — on that date.