Age Calculator
Enter your date of birth to get your exact age in years, months and days, how many days until your next birthday, and the total number of days you’ve been alive.
- Years
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- Months
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- Days
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- Next birthday
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- Total days lived
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- Day of week (birth)
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How it works
The calculator counts whole years from your birth date to today, then whole months, then the remaining days — the same way ages are stated in everyday life. “Next birthday” is the next occurrence of your month and day; on your birthday it shows today.
Total days lived is the whole-day difference between your birth date and today, so it also works for dates in the future.
Frequently asked questions
How is my exact age calculated?
We subtract your birth date from today, borrowing months and days so the result is expressed as whole years, then whole months, then leftover days — e.g. 28 years, 4 months, 12 days.
Why might my age differ from other sites?
Some sites count by 365-day years or ignore the day-of-month. This tool uses the calendar, so the month and day of your birthday matter.