Age Calculator
Calculate age in years, months, and days from a birth date to a target date.
age calculatorbirthday calculatorcalculate ageyears months days
Age36 years 5 months 0 days
Days until next birthday214 days
About this tool
Calculate age in years, months, and days from a birth date to a target date.
Your selected dates are calculated locally in your browser and are not uploaded to a server.
How to use it
- Enter a birth date.
- Choose the target date or use today.
- Review the age and next-birthday countdown.
Common use cases
- Calculate age for forms
- Check exact age on a specific date
- See days until the next birthday
Age Calculation Notes
Age can be needed as a full year count or as a more exact years-months-days value. This calculator shows the exact difference between a birth date and a target date.
| Need | Which result to use | Reminder |
|---|---|---|
| Forms and records | Years, months, and days | Check the requested date basis. |
| Birthday planning | Days until next birthday | The target date can be today or a future date. |
| Date comparison | Use Date Difference too | Useful when the question is only about days between dates. |
FAQ
Can I calculate age on a past date?
Yes. Choose any target date that is after the birth date.
Does it show the next birthday?
Yes. It shows how many days remain until the next birthday from the target date.
Are dates uploaded?
No. The calculation runs locally in your browser.